Concerned that fewer than 20%of adolescents meet the World Health Organization(WHO)’s physical activity(PA)guidelines of engaging in≥60 min each day of the week of moderate-to-vigorous PA(MVPA),classifying them as i...Concerned that fewer than 20%of adolescents meet the World Health Organization(WHO)’s physical activity(PA)guidelines of engaging in≥60 min each day of the week of moderate-to-vigorous PA(MVPA),classifying them as insufficiently active,1 Araujo et al.2 sought to identify the global prevalence of adolescents reporting less frequent MVPA(≥60 min per day of MVPA≥1 days per week)and identify differences in this prevalence by age,gender.展开更多
Background: Although emerging research is demonstrating the potential health impact of exergaming,investigations have primarily been conducted in laboratory settings among small samples with short-term interventions.I...Background: Although emerging research is demonstrating the potential health impact of exergaming,investigations have primarily been conducted in laboratory settings among small samples with short-term interventions.Information on the effectiveness of exergaming in underserved children's objective physical activity(PA) in population-based settings is also scarce.Moreover,most empirical studies have only included 1 type of exergame in the intervention.Therefore,this study's purpose was to investigate the long-term impact of a multigame exergaming intervention among underserved children integrated within school curricula.Specifically,this study examined the effect of exergaming on children's accelerometer-determined sedentary behavior(SB),light PA,moderate-to-vigorous PA(MVPA),and energy expenditure(EE) over 2 years as compared with regular physical education(PE) classes.Methods: A total of 261 second-and third-grade children(134 girls,127 boys; mean age 8.27 years) were recruited from 2 Texas elementary schools.Children's pre-test 3-day SB,light PA,MVPA,and EE at school were assessed in the fall of 2012.Participants were assigned to 1 of 2groups:(1) exergaming/PE group(125 min weekly of exergaming-based PA program) and (2) comparison group(125 min weekly of PE).PA(SB,light PA,and MVPA) and EE outcome variables were assessed again in 2013(post-test) and 2014(follow-up).Results: Significant time effects were observed for SB(F(1,162)=25.0,p<0.01,η~2= 0.14),light PA(F(1,162)=9.6,p<0.01,η~2= 0.06),and MVPA(F(1,162)=6.2,p=0.01,η~2= 0.04) but not for EE(F(1,162)=0.63,p>0.05,η~2= 0.004).Subsequent pairwise comparisons revealed significant increases from pre-to post-test for light PA(p<0.01),MVPA(p<0.01),and EE(p=0.02) with no changes in SB(p>0.05).Conversely,significant decreases occurred in light PA(p<0.01) from post-test to follow-up with no differences seen in MVPA(p=0.08) and EE(p=0.06) over the same time period.A significant increase was seen,however,for SB from post-test to follow-up.Conclusion: Exergaming PE can have the same positive effect on children's light PA,MVPA,and EE as regular PE.More research is necessary to discern how to promote long-term PA participation after conclusion of the intervention.展开更多
Background: Evidence suggests involvement in youth sport does not guarantee daily guidelines for moderate-to-vigorous physical activity(MVPA) are met, and participation may not mitigate the risks associated with physi...Background: Evidence suggests involvement in youth sport does not guarantee daily guidelines for moderate-to-vigorous physical activity(MVPA) are met, and participation may not mitigate the risks associated with physical inactivity. The need to promote higher habitual MVPA engagement amongst children active in the youth sport context has therefore been underlined. Framed by self-determination theory, the aim of the present study was to examine the implications of the motivational climate created in youth sport, for children's daily engagement in MVPA and associated adiposity. Specifically, we sought to test a motivational sequence in which children's perceptions of an empowering coach-created motivational climate were related to autonomous and controlled motivation, which in turn predicted sport-related enjoyment. Finally, enjoyment was assumed to predict accelerometer assessed daily MVPA and, following this, adiposity.Methods: Male and female youth sport participants aged 9–16 years(n = 112) completed multi-section questionnaires assessing their perceptions of the motivational climate created in youth sport(i.e., autonomy supportive, task involving, socially supportive), autonomous and controlled motivation, and sport-related enjoyment. Daily MVPA engagement was determined via 7 days of accelerometry. Percent body fat(BF%) was estimated using bio-electrical impedance analysis.Results: Path analysis revealed perceptions of an empowering motivational climate positively predicted players' autonomous motivation, and in turn, sport-related enjoyment. Enjoyment was also significantly negatively related to players' BF%, via a positive association with daily MVPA.Conclusion: Fostering more empowering youth sport environments may hold implications for the prevention of excess adiposity, through encouraging higher habitual MVPA engagement. Findings may inform the optimal design of youth sport settings for MVPA promotion, and contribute towards associated healthy weight maintenance amongst youth active in this context. Longitudinal and intervention studies are required to confirm these results.展开更多
Purpose: The purpose of this study was to examine the association between school and community physical activity(PA) characteristics and levels of moderate-to-vigorous physical activity(MVPA) among Chinese school chil...Purpose: The purpose of this study was to examine the association between school and community physical activity(PA) characteristics and levels of moderate-to-vigorous physical activity(MVPA) among Chinese school children.Methods: Data were obtained from the 2016 Physical Activity and Fitness in China—The Youth Study project. Participants were 80,928 school children(Grades 4–12; 39,747 boys, 41,181 girls; mean age = 13 years) and 935 physical education(PE) teachers who completed a study survey.Independent variables included both school-related factors(school-level PA support, availability of and access to PA facilities, and the duration of school PE classes) and community-related factors(the frequency of sports events, sports training opportunities, availability of sports clubs and organizations, and access to PA facilities). The dependent variable was the children's self-reported participation in MVPA. The data were analyzed,in 2017, via multilevel modeling.Results: PA support from school administrators was the only school-level factor significantly related to children's participation in MVPA.Children's perceptions of the frequency of community-sponsored sports events, availability of sports clubs and organizations, and convenient access to PA facilities were associated with a high level of MVPA participation. In regard to residency in urban and rural areas, children attending urban schools who perceived high availability of PA facilities were associated with a low level of participation in MVPA.Conclusion: School support for PA and community PA resources are associated with MVPA among Chinese school children. School PA facilities appear underutilized among urban schools as evidenced by low levels of MVPA among school children.展开更多
Diabetes mellitus(DM)has become one of the most serious and common chronic diseases around the world,leading to various complications and a reduction in life expectancy.Increased sedentary behavior(SB)and decreased ph...Diabetes mellitus(DM)has become one of the most serious and common chronic diseases around the world,leading to various complications and a reduction in life expectancy.Increased sedentary behavior(SB)and decreased physical activity(PA)are important contributors to the rising prevalence of DM.This article reviews the research progress on the pathogenesis of DM,the effects of SB and PA on the risk of DM,aiming to explore the influence of different PA intensities,amounts,frequencies,durations and types on the incidence of DM.Research has shown that blood glucose levels tend to increase with the prolongation of SB.Within a certain range,PA intensity and PA amount are negatively correlated with the risk of DM;Performing PA for more than 3 days per week maintains normal glucose tolerance and lower blood pressure;Engaging in 150–300 min of moderate intensity exercise or 75–150 min of high-intensity exercise per week reduces the risk of DM;PA during leisure time reduces the risk of DM,while PA during work increases the risk of DM;Both aerobic training and resistance training reduce the risk of DM,and the combination of the two training methods produces better benefits;Various types of exercises,such as cycling,soccer,aerobics,yoga,tai chi,all reduce the risk of DM.In summary,prolonged SB increases the risk of DM,while appropriate PA reduces the risk of DM.As the intensity,amount,and frequency of PA increase,the effect of reducing DM risk becomes more significant.Different exercise methods have different effects on reducing DM risk.展开更多
The ongoing revolution in information technology is reshaping human life. In the realm of health behavior, wearable technology emerges as a leading digital solution,capturing physical behaviors (i.e., physical activit...The ongoing revolution in information technology is reshaping human life. In the realm of health behavior, wearable technology emerges as a leading digital solution,capturing physical behaviors (i.e., physical activity, sedentary habits, sleep patterns) within the 24-h cycle of daily life. Wearables are applied in research, clinical practice, and as lifestyle devices;most obvious, they promise to be a key element for increasing human physical activity, one of the biggest health challenges nowadays.展开更多
Non-communicable diseases (NCDs) are on the rise worldwide and in developing countries like Botswana. Unhealthy eating habits and lack of proper nutrition knowledge cause non-communicable diseases and affect adolescen...Non-communicable diseases (NCDs) are on the rise worldwide and in developing countries like Botswana. Unhealthy eating habits and lack of proper nutrition knowledge cause non-communicable diseases and affect adolescents. It is in adolescence that eating habits are formed that persist till adulthood. Lifestyle interventions are needed to curb NCDs in adolescents. This paper reports the findings of a study that aimed to validate a lifestyle intervention program and its effect on food intake, physical activity, and nutrition knowledge. It was a clustered randomized control trial study conducted in four (4) junior secondary schools. There were 46 participants, 21 in the control and 25 in the intervention arm, who were blindly assigned to each arm by a statistician. Information and skills on nutrition were imparted using the Information, Motivation, and Behavioral Skills model. The program was implemented for eight (8) weeks hourly after school. A questionnaire was used to collect data pre- and post-intervention. Number, proportion, percentage, and independent t-test (mean and SD or median and IQR, p-value) were calculated using numerical and categorical data. The findings showed that the lifestyle intervention was valid, and there was a slight decrease in the intake of sweets among participants in both trial arms (p = 0.066). There was no significant difference in terms of food intake. Only a small number of participants still ate a few fruits, and there was no change in vegetable intake in both trial arms (p = 0.641). There was no change in the intake of fried foods in both trail arms (p = 0.402). Regarding nutrition knowledge, there was a slight significant difference of p = 0.079 between the trial arms. Though the effect of the lifestyle intervention program was not statistically significant, the results are promising, especially if the duration could be increased to a longer period and a larger sample size included.展开更多
Background There is a lack of research examining the interplay between objectively measured physical activity volume and intensity with life expectancy.The purpose of the study was to investigate the interplay between...Background There is a lack of research examining the interplay between objectively measured physical activity volume and intensity with life expectancy.The purpose of the study was to investigate the interplay between objectively measured PA volume and intensity profiles with modeled life expectancy in women and men within the UK Biobank cohort study and interpret findings in relation to brisk walking.Methods Individuals from UK Biobank with wrist-worn accelerometer data were included.The average acceleration and intensity gradient were extracted to describe the physical activity volume and intensity profile.Mortality data were obtained from national registries.Adjusted life expectancies were estimated using parametric flexible survival models.Results 40,953(57.1%)women(median age=61.9 years)and 30,820(42.9%)men(63.1 years)were included.Over a median follow-up of 6.9 years,there were 1719(2.4%)deaths(733 in women;986 in men).At 60 years,life expectancy was progressively longer for higher physical activity volume and intensity profiles,reaching 95.6 years in women and 94.5 years in men at the 90th centile for both volume and intensity,corresponding to 3.4 additional years(95%confidence interval(95%CI):2.4-4.4)in women and 4.6 additional years(95%CI:3.6-5.6)in men compared to those at the 10th centiles.An additional 10-min or 30-min daily brisk walk was associated with 0.9(95%CI:0.5-1.3)and 1.4 years(95%CI:0.9-1.9)longer life expectancy,respectively,in inactive women;and 1.4 years(95%CI:1.0-1.8)and 2.5(95%CI:1.9-3.1)in inactive men.Conclusion Higher physical activity volumes were associated with longer life expectancy,with a higher physical activity intensity profile further adding to a longer life.Adding as little as a 10-min brisk walk to daily activity patterns may result in a meaningful benefit to life expectancy.展开更多
Today, most people know that physical activity(PA) is beneficial for their health ^(1,2)and aspire to engage in regular PA.^(3,4)However, despite their awareness of the importance of PA, it is evident that the transit...Today, most people know that physical activity(PA) is beneficial for their health ^(1,2)and aspire to engage in regular PA.^(3,4)However, despite their awareness of the importance of PA, it is evident that the transition from intention to action is challenging-a situation that has important public health implications. According to the World Health Organization,^(5)1 person dies every 6 s worldwide from causes related to physical inactivity, which underscores the urgency of addressing this situation.展开更多
In the new released article of the Journal of Sport and Health Science,Zaccardi et al.1 provide compelling evidence that engaging in higher volumes and intensities of physical activity(PA)increases life expectancy in ...In the new released article of the Journal of Sport and Health Science,Zaccardi et al.1 provide compelling evidence that engaging in higher volumes and intensities of physical activity(PA)increases life expectancy in older men and women enrolled in the UK Biobank study.The study included 30,820 men and 40,953 women with median ages of 63.1 years and 61.9 years,respectively.Study participants wore accelerometers to track their time and intensity of PA for 7 days at baseline.展开更多
Background:Taking actions to maintain a healthy lifestyle,including regular engagement in physical activity(PA)and reducing sedentary behavior(SB),may protect against the development of internalizing problems among he...Background:Taking actions to maintain a healthy lifestyle,including regular engagement in physical activity(PA)and reducing sedentary behavior(SB),may protect against the development of internalizing problems among healthy youth.However,it remains unclear whether such associations exist among youth with chronic pain who often report symptoms of depression and anxiety.To this end,we aimed to investigate the associations between independent and combined PA and/or SB patterns with indicators of internalizing problems in this vulnerable population.Methods:Data used in this cross-sectional study were retrieved from the U.S.National Survey of Children’s Health for the years 2021-2022.Specifically,caregiver proxy reports on sociodemgraphic factors and lifestyle behaviors of 4735 U.S.children and adolescents(referring to youth)aged 6-17 years were collected.We examined independent and combined patterns of PA and SB as exposures,with internalizing problems serving as outcomes of interest.Logistic regressions were used to examine the independent and combined associations of PA and/or SB patterns with anxiety and depression symptoms among youth with chronic pain while adjusting for covariates including age,sex,ethnicity,primary caregivers’education level,overweight status,and household federal poverty level.Results:Overall,our results indicated that PA was negatively associated with anxiety and depressive symptoms.Specifically,youth with chronic pain who engaged in at least 60-minute PA for 1-3 days,4-6 days,or every day reported significantly lower likelihood of experiencing symptoms of anxiety(OR=0.71,95%CI:0.60-0.84;OR=0.44,95%CI:0.36-0.53;OR=0.50,95%CI:0.40-0.63,respectively;all p-value<0.001)and depression(OR=0.63,95%CI:0.53-0.75;OR=0.38,95%CI:0.31-0.47;OR=0.46,95%CI:0.36-0.59,respectively;all p-value<0.001)symptoms compared to those with 0 days.Conversely,SB(operationalized via the proxy screen time)was positively associated with anxiety and depression symptoms.Youth with chronic pain who reported 4 or more hours of daily screen time had significantly higher odds of experiencing symptoms of anxiety(OR=2.17,95%CI:1.52-3.09,p<0.001)and depression(OR=2.30,95%CI:1.48-3.59,p<0.001).Furthermore,youth with chronic pain who engaged in higher PA levels and reported lower SB levels had a lower likelihood of experiencing symptoms of anxiety(OR=0.68,95%CI:0.52-0.87,p=0.003)and depression(OR=0.49,95%CI:0.34-0.70,p<0.001)symptoms compared to those with lower PA levels and higher SB levels.Conclusions:Higher PA levels and lower SB levels were associated with a reduced likelihood of developing anxiety and depression symptoms,which are indicative of internalizing problems,among youth with chronic pain.Future public health actions in this vulnerable population should prioritize intervention programs that promote PA engagement to reduce SB levels.展开更多
There is no way around it.Regular physical activity(PA)and a high-quality diet are essential to promoting good health and prolonging life in middle-aged and older adults.In the November 2024 Issue of the Journal of Sp...There is no way around it.Regular physical activity(PA)and a high-quality diet are essential to promoting good health and prolonging life in middle-aged and older adults.In the November 2024 Issue of the Journal of Sport and Health Science,Ding et al.展开更多
In recent years,insufficient physical activity has coincided with suboptimal health among university students.Drawing on the Suboptimal Health Status(SHS)framework,this study surveyed 314 students from multiple provin...In recent years,insufficient physical activity has coincided with suboptimal health among university students.Drawing on the Suboptimal Health Status(SHS)framework,this study surveyed 314 students from multiple provinces/municipalities in China.Physical activity was assessed with a physical activity level scale,and health status with the Sub-Health Measurement Scale Version 1.0(SHMS V1.0).Correlation and multiple regression analyses were used to test associations.Physical exercise was positively associated with overall health(r=0.515,p<0.001)and,after adjusting for sex,only-child status,and place of origin,remained a signifi cant predictor of better health(β=0.515,t=10.512,p<0.001).Sex was associated with exercise level,whereas other demographic variables showed no signifi cant eff ects on health status.These fi ndings suggest that promoting moderate-to-vigorous physical activity and campus sport participation may improve students’physiological,psychological,and social adaptation,providing practical guidance for health promotion and exercise prescription in higher education.展开更多
Background It remains unclear whether sleep duration and physical activity(PA)trajectories in middle-aged and older adults are associated with different risks of cardiovascular diseases(CVDs).This study aimed to explo...Background It remains unclear whether sleep duration and physical activity(PA)trajectories in middle-aged and older adults are associated with different risks of cardiovascular diseases(CVDs).This study aimed to explore the trajectories of total sleep duration and PA among middle-aged and older Chinese adults and their impact on CVD risk.Methods This study was based on the China Health and Retirement Longitudinal Study.12009 adults aged 45 years and older from five waves were included.CVD events were measured by self-reports of heart disease and stroke.We first used groupbased trajectory modeling to identify total sleep duration and PA trajectories from 2011 to 2020,and then employed logistic regression models to analyze their risk for CVD.Results We identified three sleep duration and PA trajectories.The risk of heart disease increased by 33%(OR=1.31,95%CI:1.12-1.53)for the short sleep duration trajectory(vs.moderate sleep duration trajectory),by 40%(OR=1.40,95%CI:1.06-1.84)for the high decreasing PA trajectory,and by 20%(OR=1.20,95%CI:1.01-1.42)for the low stable PA trajectory(vs.high stable PA trajectory),respectively.Similar results for stroke and CVD as the outcomes were also observed,but the higher risk of stroke in the high decreasing PA trajectory group was not statistically significant.The joint effects of sleep and PA showed lower risks of heart disease and stroke in trajectories with moderate or long sleep duration and high stable PA compared with short sleep duration and a low stable PA trajectory.Conclusions Short total sleep duration,high decreasing PA,and low stable PA trajectories could increase the risk of CVDs among middle-aged and older adults.Long-term moderate to long total sleep durations and high stable PA trajectories might be optimal for preventing CVDs.展开更多
Objectives:People living with myalgic encephalomyelitis/chronic fatigue syndrome(ME/CFS)may face unique barriers to physical activity.Active video games may overcome these barriers and increase physical activity.The p...Objectives:People living with myalgic encephalomyelitis/chronic fatigue syndrome(ME/CFS)may face unique barriers to physical activity.Active video games may overcome these barriers and increase physical activity.The primary aim of this pilot study was to determine the feasibility and acceptability of active video games to increase physical activity levels of people with ME/CFS.Methods:A mixed method design was employed.Adults living with ME/CFS were randomised to a six-month intervention of(1)pacing,(2)pacing and conventional physical activity,or(3)pacing and active video gaming.Feasibility and acceptability were determined through semi-structured interviews.Health-related outcomes(e.g.,physical activity,blood samples,quality of life,and functioning)were also collected.Results:Fifteen people were assigned an intervention group with 12 completing.Three themes were identified from post-intervention interviews(1)positivity led to overall acceptability,(2)flexibility enabled participant autonomy,and(3)knowledge was gained about the self.No changes were seen in physical activity levels.An active video gaming intervention is acceptable but not feasible for people living with ME/CFS.Conclusions:Taken together,results suggest that physical activity can be managed safely by some people living with ME/CFS.Trial registration ACTRN12616000285459.展开更多
Background:A shift from self-reports to wearable sensors for global physical activity(PA)surveillance has been recommended.The conventional use of a generic cut-point to assess moderate-to-vigorous PA(MVPA)is problema...Background:A shift from self-reports to wearable sensors for global physical activity(PA)surveillance has been recommended.The conventional use of a generic cut-point to assess moderate-to-vigorous PA(MVPA)is problematic as these cut-points are often derived from non-representative samples under non-ecological laboratory conditions.This study aimed to develop age-and sex-(age-sex)specific cut-points for MVPA based on population-standardized values as a feasible approach to assess the adherence to PA guidelines and to investigate its associations with all-cause mortality.Methods:A total of 7601 participants(20-85+years)were drawn from the 2003-2004 and 2005-2006 National Health and Nutrition Examination Surveys(NHANES).Minutes per week of MVPA were assessed with a hip-worn accelerometer.Counts per minute(CPM)were used to define an age-sex specific target intensity,representing the intensity each person should be able to reach based on their age and sex.Age-sex specific MVPA cut-points were defined as any activity above 40%of the target intensity.These population-and free-living-based age-sex specific cut-points overcome many of the limitations of the standard generic cut-point approach.For comparison,we also calculated MVPA with a generic cut-point of 1952 CPM.Both approaches were compared for assessing adherence to PA guidelines and association of MVPA with allcause mortality(ascertained through December 2015).Results:Both approaches indicated that 37%of the sample met the 150+min/week guideline.The generic cut-point approach showed a trend to inactivity with age,which was less pronounced using the age-sex specific cut-points.Overall mortality rates were comparable using generic cutpoint(hazard ratio(HR)=0.61,95%confidence interval(95%CI):0.50-0.73)or age-sex specific cut-points(HR=0.57,95%CI:0.50-0.66)for the entire sample.The generic cut-point method revealed an age-and sex-related gap in the benefits of achieving 150+min/week of MVPA,with older adults showing an 18%greater reduction in mortality rates than younger adults,and a larger difference in women than in men.This disparity disappeared when using age-sex specific cut-points.Conclusion:Our findings underscore the value of age-sex specific cut-points for global PA surveillance.MVPA defined with age-sex specific thresholds was associated with all-cause mortality and the dose-response was similar for all ages and sexes.This aligns with the single recommendation of accumulating 150+min/week MVPA for all adults,irrespective of age and sex.This study serves as a proof of concept to develop this methodology for PA surveillance over more advanced open-source acceleration metrics and other national and international cohorts.展开更多
Background With the rapid growth of internet usage,adolescent cyberbullying has become a pressing issue.This study examines the longitudinal impact of leisure-time physical activity and peer relationships on cyberbull...Background With the rapid growth of internet usage,adolescent cyberbullying has become a pressing issue.This study examines the longitudinal impact of leisure-time physical activity and peer relationships on cyberbullying over a one-year period,drawing on the Stage-Environment Fit Theory and the Interpersonal Relationship Theory.Methods A three-wave longitudinal study was conducted over one year,involving 896 middle school students from five schools in Sichuan,Jiangsu,and Guangdong,China,selected to ensure regional diversity.Participants were recruited using stratified random sampling,and data were collected at four-month intervals.Leisure-time physical activity,peer relationships,and cyberbullying behaviors were assessed using validated scales.Data were analyzed using latent growth modeling(LGM)and structural equation modeling(SEM)to examine longitudinal effects and mediation relationships.Results(1)Leisure-time physical activity,peer relationships,and cyberbullying behaviors remained relatively stable over time.(2)Both leisure-time physical activity and peer relationships significantly reduced future cyberbullying incidents,with physical activity also enhancing subsequent peer relationships.(3)Peer relationships partially mediated the effect of leisure-time physical activity on cyberbullying,indicating that improved peer interactions contributed to a reduction in cyberbullying behaviors.Conclusion This study found that leisure-time sports activities and peer relationships are important factors affecting cyberbullying,and peer relationships play a partial mediating role in it.The results provide empirical support for understanding the formation mechanism and influencing factors of cyberbullying.展开更多
Objectives Physical activity during pregnancy benefits both women and their fetuses;however,the prevalence of physical inactivity is high among pregnant women in the first trimester.This study aimed to examine physica...Objectives Physical activity during pregnancy benefits both women and their fetuses;however,the prevalence of physical inactivity is high among pregnant women in the first trimester.This study aimed to examine physical activity patterns among pregnant Chinese women in the first trimester and clarify the characteristics associated with physical inactivity in the first trimester.Methods This cross-sectional study was conducted at three Class-A tertiary hospitals in Guangzhou,city,China,from December 2021 to June 2022.A total of 1,283 pregnant women were enrolled.The Pregnancy Physical Activity Questionnaire and a sociodemographic and obstetric data sheet collected information in the first trimester.Results The prevalence of physical inactivity among Chinese pregnant women was 51%.Pregnant women spent the most time in the domains of household/caregiving activities(median 38.25 h/week)and sedentary activities(median 54.25 h/week).Characteristics of pregnant women who were more likely to be physically inactive included younger age(OR:1.413,95%CI:1.291,1.767;P=0.002),unmarried(OR:2.976,95%CI:1.573,5.630;P=0.001),lower monthly income(OR:1.945,95%CI:1.535,2.464;P=0.001),self-paid medical care(OR:1.472,95%CI:1.140,1.900;P=0.003),nulliparous(OR:3.169,95%CI:2.504,4.009;P=0.001),inadequate knowledge about physical activity during pregnancy(OR:1.797,95%CI:1.432,2.255;P=0.001),husbands with no physical activity habits(OR:1.353,95%CI:1.081,1.693;P=0.008),and no prepregnancy physical activity habits(OR:1.832,95%CI:1.433,2.340;P=0.001).Conclusions Physical inactivity was prevalent among pregnant women in the first trimester.Promoting physical activity could be incorporated into routine antenatal care.Healthcare professionals should assess and monitor the physical activity of pregnant women and provide consultations on physical activity during their first trimester,particularly for pregnant women with characteristics associated with physical inactivity.展开更多
A growing global trend indicates a decline in semen quality,with a lack of physical activity identified as one of the contributing factors.Exercise is medication,and numerous studies have explored its effects on semen...A growing global trend indicates a decline in semen quality,with a lack of physical activity identified as one of the contributing factors.Exercise is medication,and numerous studies have explored its effects on semen quality.However,there is no consensus on the most effective type and intensity of exercise for improving semen quality,owing to inconsistent findings across studies.These discrepancies may be attributable to variations in study populations(e.g.,healthy versus infertile individuals)and research methodologies(e.g.,observational versus interventional studies).This paper reviews the existing literature from the databases PubMed,Web of Science,and Google Scholar,reclassifying articles on their subject and research designs to delineate the relationship between exercise and semen quality.It also summarizes the mechanisms through which exercise influences semen quality,including hormonal regulation,oxidative stress,and inflammatory factors.展开更多
Objectives:Physical activity(PA)levels in young people with cerebral palsy(YPwCP)remain consistently low.Previous research suggests that fitness parameters such as muscular strength and cardiovascular capacity are int...Objectives:Physical activity(PA)levels in young people with cerebral palsy(YPwCP)remain consistently low.Previous research suggests that fitness parameters such as muscular strength and cardiovascular capacity are interrelated with mobility and PA levels in YPwCP.This study aimed to(1)describe fitness parameters and PA levels in YPwCP,(2)explore associations between fitness parameters and PA,and(3)evaluate the reliability of accelerometer-based PA measurement.Methods:A cross-sectional study was conducted with an embedded test–retest reliability assessment of accelerometermeasured PA over a one-month interval.Participants included 36 YPwCP(19 males,17 females;mean age 15.5±0.7 years),classified within GMFCS levels I–III.Cardiorespiratory endurance(VO2max)was assessed using an incremental cycle ergometer test,and leg power was measured using the FiveTimes Sit-to-Stand(5xSTS).PA was measured via self-report using the Physical Activity Questionnaire for Adolescents(PAQ-A)and via device-measured data using a wrist-worn accelerometer over seven consecutive days.Results:We found low levels of PA.The 5xSTS completion time showed moderate to strong correlations with selfreported PA(ρ=−0.384,p≤0.01)and device-measured vigorous PA(ρ=−0.566,p≤0.01).VO2max was positively but not significantly associated with total PA(ρ=0.173)and moderate-to-vigorous PA(ρ=0.115).Accelerometry demonstrated good reliability(ICC=0.796).Conclusions:These findings suggest that accelerometer has good reliability in YPwCP but highlight low levels of PA measured by self-report and accelerometer.Higher lowerlimb power,assessed by faster 5xSTS test,was associated with greater PA.展开更多
文摘Concerned that fewer than 20%of adolescents meet the World Health Organization(WHO)’s physical activity(PA)guidelines of engaging in≥60 min each day of the week of moderate-to-vigorous PA(MVPA),classifying them as insufficiently active,1 Araujo et al.2 sought to identify the global prevalence of adolescents reporting less frequent MVPA(≥60 min per day of MVPA≥1 days per week)and identify differences in this prevalence by age,gender.
基金funded by a grant from the National Institute of Child and Human Development(1R15HD071514-01A1)
文摘Background: Although emerging research is demonstrating the potential health impact of exergaming,investigations have primarily been conducted in laboratory settings among small samples with short-term interventions.Information on the effectiveness of exergaming in underserved children's objective physical activity(PA) in population-based settings is also scarce.Moreover,most empirical studies have only included 1 type of exergame in the intervention.Therefore,this study's purpose was to investigate the long-term impact of a multigame exergaming intervention among underserved children integrated within school curricula.Specifically,this study examined the effect of exergaming on children's accelerometer-determined sedentary behavior(SB),light PA,moderate-to-vigorous PA(MVPA),and energy expenditure(EE) over 2 years as compared with regular physical education(PE) classes.Methods: A total of 261 second-and third-grade children(134 girls,127 boys; mean age 8.27 years) were recruited from 2 Texas elementary schools.Children's pre-test 3-day SB,light PA,MVPA,and EE at school were assessed in the fall of 2012.Participants were assigned to 1 of 2groups:(1) exergaming/PE group(125 min weekly of exergaming-based PA program) and (2) comparison group(125 min weekly of PE).PA(SB,light PA,and MVPA) and EE outcome variables were assessed again in 2013(post-test) and 2014(follow-up).Results: Significant time effects were observed for SB(F(1,162)=25.0,p<0.01,η~2= 0.14),light PA(F(1,162)=9.6,p<0.01,η~2= 0.06),and MVPA(F(1,162)=6.2,p=0.01,η~2= 0.04) but not for EE(F(1,162)=0.63,p>0.05,η~2= 0.004).Subsequent pairwise comparisons revealed significant increases from pre-to post-test for light PA(p<0.01),MVPA(p<0.01),and EE(p=0.02) with no changes in SB(p>0.05).Conversely,significant decreases occurred in light PA(p<0.01) from post-test to follow-up with no differences seen in MVPA(p=0.08) and EE(p=0.06) over the same time period.A significant increase was seen,however,for SB from post-test to follow-up.Conclusion: Exergaming PE can have the same positive effect on children's light PA,MVPA,and EE as regular PE.More research is necessary to discern how to promote long-term PA participation after conclusion of the intervention.
基金supported by the European Commission under the Seventh Framework Programme-Health (No. 223600) as part of the PAPA project (www.projectpapa.org)
文摘Background: Evidence suggests involvement in youth sport does not guarantee daily guidelines for moderate-to-vigorous physical activity(MVPA) are met, and participation may not mitigate the risks associated with physical inactivity. The need to promote higher habitual MVPA engagement amongst children active in the youth sport context has therefore been underlined. Framed by self-determination theory, the aim of the present study was to examine the implications of the motivational climate created in youth sport, for children's daily engagement in MVPA and associated adiposity. Specifically, we sought to test a motivational sequence in which children's perceptions of an empowering coach-created motivational climate were related to autonomous and controlled motivation, which in turn predicted sport-related enjoyment. Finally, enjoyment was assumed to predict accelerometer assessed daily MVPA and, following this, adiposity.Methods: Male and female youth sport participants aged 9–16 years(n = 112) completed multi-section questionnaires assessing their perceptions of the motivational climate created in youth sport(i.e., autonomy supportive, task involving, socially supportive), autonomous and controlled motivation, and sport-related enjoyment. Daily MVPA engagement was determined via 7 days of accelerometry. Percent body fat(BF%) was estimated using bio-electrical impedance analysis.Results: Path analysis revealed perceptions of an empowering motivational climate positively predicted players' autonomous motivation, and in turn, sport-related enjoyment. Enjoyment was also significantly negatively related to players' BF%, via a positive association with daily MVPA.Conclusion: Fostering more empowering youth sport environments may hold implications for the prevention of excess adiposity, through encouraging higher habitual MVPA engagement. Findings may inform the optimal design of youth sport settings for MVPA promotion, and contribute towards associated healthy weight maintenance amongst youth active in this context. Longitudinal and intervention studies are required to confirm these results.
基金supported by the Key Project of the National Social Science Foundation of China (No.16ZDA227)
文摘Purpose: The purpose of this study was to examine the association between school and community physical activity(PA) characteristics and levels of moderate-to-vigorous physical activity(MVPA) among Chinese school children.Methods: Data were obtained from the 2016 Physical Activity and Fitness in China—The Youth Study project. Participants were 80,928 school children(Grades 4–12; 39,747 boys, 41,181 girls; mean age = 13 years) and 935 physical education(PE) teachers who completed a study survey.Independent variables included both school-related factors(school-level PA support, availability of and access to PA facilities, and the duration of school PE classes) and community-related factors(the frequency of sports events, sports training opportunities, availability of sports clubs and organizations, and access to PA facilities). The dependent variable was the children's self-reported participation in MVPA. The data were analyzed,in 2017, via multilevel modeling.Results: PA support from school administrators was the only school-level factor significantly related to children's participation in MVPA.Children's perceptions of the frequency of community-sponsored sports events, availability of sports clubs and organizations, and convenient access to PA facilities were associated with a high level of MVPA participation. In regard to residency in urban and rural areas, children attending urban schools who perceived high availability of PA facilities were associated with a low level of participation in MVPA.Conclusion: School support for PA and community PA resources are associated with MVPA among Chinese school children. School PA facilities appear underutilized among urban schools as evidenced by low levels of MVPA among school children.
基金Key Project of Undergraduate Teaching Reform Research of Shandong Normal University(No.2024ZJ12)sixth batch of"Sports and Health"special topic of Education Research of Chinese Society of Education。
文摘Diabetes mellitus(DM)has become one of the most serious and common chronic diseases around the world,leading to various complications and a reduction in life expectancy.Increased sedentary behavior(SB)and decreased physical activity(PA)are important contributors to the rising prevalence of DM.This article reviews the research progress on the pathogenesis of DM,the effects of SB and PA on the risk of DM,aiming to explore the influence of different PA intensities,amounts,frequencies,durations and types on the incidence of DM.Research has shown that blood glucose levels tend to increase with the prolongation of SB.Within a certain range,PA intensity and PA amount are negatively correlated with the risk of DM;Performing PA for more than 3 days per week maintains normal glucose tolerance and lower blood pressure;Engaging in 150–300 min of moderate intensity exercise or 75–150 min of high-intensity exercise per week reduces the risk of DM;PA during leisure time reduces the risk of DM,while PA during work increases the risk of DM;Both aerobic training and resistance training reduce the risk of DM,and the combination of the two training methods produces better benefits;Various types of exercises,such as cycling,soccer,aerobics,yoga,tai chi,all reduce the risk of DM.In summary,prolonged SB increases the risk of DM,while appropriate PA reduces the risk of DM.As the intensity,amount,and frequency of PA increase,the effect of reducing DM risk becomes more significant.Different exercise methods have different effects on reducing DM risk.
基金funded in part by the German Research Foundation(Grant reference:496846758).
文摘The ongoing revolution in information technology is reshaping human life. In the realm of health behavior, wearable technology emerges as a leading digital solution,capturing physical behaviors (i.e., physical activity, sedentary habits, sleep patterns) within the 24-h cycle of daily life. Wearables are applied in research, clinical practice, and as lifestyle devices;most obvious, they promise to be a key element for increasing human physical activity, one of the biggest health challenges nowadays.
文摘Non-communicable diseases (NCDs) are on the rise worldwide and in developing countries like Botswana. Unhealthy eating habits and lack of proper nutrition knowledge cause non-communicable diseases and affect adolescents. It is in adolescence that eating habits are formed that persist till adulthood. Lifestyle interventions are needed to curb NCDs in adolescents. This paper reports the findings of a study that aimed to validate a lifestyle intervention program and its effect on food intake, physical activity, and nutrition knowledge. It was a clustered randomized control trial study conducted in four (4) junior secondary schools. There were 46 participants, 21 in the control and 25 in the intervention arm, who were blindly assigned to each arm by a statistician. Information and skills on nutrition were imparted using the Information, Motivation, and Behavioral Skills model. The program was implemented for eight (8) weeks hourly after school. A questionnaire was used to collect data pre- and post-intervention. Number, proportion, percentage, and independent t-test (mean and SD or median and IQR, p-value) were calculated using numerical and categorical data. The findings showed that the lifestyle intervention was valid, and there was a slight decrease in the intake of sweets among participants in both trial arms (p = 0.066). There was no significant difference in terms of food intake. Only a small number of participants still ate a few fruits, and there was no change in vegetable intake in both trial arms (p = 0.641). There was no change in the intake of fried foods in both trail arms (p = 0.402). Regarding nutrition knowledge, there was a slight significant difference of p = 0.079 between the trial arms. Though the effect of the lifestyle intervention program was not statistically significant, the results are promising, especially if the duration could be increased to a longer period and a larger sample size included.
基金funded by the National Institute for Health Research (NIHR) Leicester Biomedical Research Centre (BRC)the Applied Research Collaborations East Midlands (ARC-EM)supported by a UKRI project grant (MR/T031816/1)。
文摘Background There is a lack of research examining the interplay between objectively measured physical activity volume and intensity with life expectancy.The purpose of the study was to investigate the interplay between objectively measured PA volume and intensity profiles with modeled life expectancy in women and men within the UK Biobank cohort study and interpret findings in relation to brisk walking.Methods Individuals from UK Biobank with wrist-worn accelerometer data were included.The average acceleration and intensity gradient were extracted to describe the physical activity volume and intensity profile.Mortality data were obtained from national registries.Adjusted life expectancies were estimated using parametric flexible survival models.Results 40,953(57.1%)women(median age=61.9 years)and 30,820(42.9%)men(63.1 years)were included.Over a median follow-up of 6.9 years,there were 1719(2.4%)deaths(733 in women;986 in men).At 60 years,life expectancy was progressively longer for higher physical activity volume and intensity profiles,reaching 95.6 years in women and 94.5 years in men at the 90th centile for both volume and intensity,corresponding to 3.4 additional years(95%confidence interval(95%CI):2.4-4.4)in women and 4.6 additional years(95%CI:3.6-5.6)in men compared to those at the 10th centiles.An additional 10-min or 30-min daily brisk walk was associated with 0.9(95%CI:0.5-1.3)and 1.4 years(95%CI:0.9-1.9)longer life expectancy,respectively,in inactive women;and 1.4 years(95%CI:1.0-1.8)and 2.5(95%CI:1.9-3.1)in inactive men.Conclusion Higher physical activity volumes were associated with longer life expectancy,with a higher physical activity intensity profile further adding to a longer life.Adding as little as a 10-min brisk walk to daily activity patterns may result in a meaningful benefit to life expectancy.
基金supported by The Shenzhen Educational Research Funding(zdzb2014)The Shenzhen Science and Technology Innovation Commission(202307313000096)+4 种基金The Social Science Foundation from the China's Ministry of Education(23YJA880093)The Post-Doctoral Fellowship(2022M711174)The National Center for Mental Health(Z014)BC is supported by the Chaires de recherche Rennes Métropole(23C 0909)SM is supported by the National Insti-tutes of Health(R01AG72445).
文摘Today, most people know that physical activity(PA) is beneficial for their health ^(1,2)and aspire to engage in regular PA.^(3,4)However, despite their awareness of the importance of PA, it is evident that the transition from intention to action is challenging-a situation that has important public health implications. According to the World Health Organization,^(5)1 person dies every 6 s worldwide from causes related to physical inactivity, which underscores the urgency of addressing this situation.
文摘In the new released article of the Journal of Sport and Health Science,Zaccardi et al.1 provide compelling evidence that engaging in higher volumes and intensities of physical activity(PA)increases life expectancy in older men and women enrolled in the UK Biobank study.The study included 30,820 men and 40,953 women with median ages of 63.1 years and 61.9 years,respectively.Study participants wore accelerometers to track their time and intensity of PA for 7 days at baseline.
基金supported by Shenzhen Educational Research Funding(zdzb2014)Shenzhen Science and Technology Innovation Commission Foundation(202307313000096)+4 种基金Social Science Foundation from China’s Ministry of Education(23YJA880093)China Postdoctoral Science Foundation(2022M711174)National Center for Mental Health Foundation(Z014),Research Excellence Scholarships of Shenzhen University(ZYZD2305)Research Funding for Society of Sport Science(PT2023030)Natural Science Foundation of Shenzhen University(000311).
文摘Background:Taking actions to maintain a healthy lifestyle,including regular engagement in physical activity(PA)and reducing sedentary behavior(SB),may protect against the development of internalizing problems among healthy youth.However,it remains unclear whether such associations exist among youth with chronic pain who often report symptoms of depression and anxiety.To this end,we aimed to investigate the associations between independent and combined PA and/or SB patterns with indicators of internalizing problems in this vulnerable population.Methods:Data used in this cross-sectional study were retrieved from the U.S.National Survey of Children’s Health for the years 2021-2022.Specifically,caregiver proxy reports on sociodemgraphic factors and lifestyle behaviors of 4735 U.S.children and adolescents(referring to youth)aged 6-17 years were collected.We examined independent and combined patterns of PA and SB as exposures,with internalizing problems serving as outcomes of interest.Logistic regressions were used to examine the independent and combined associations of PA and/or SB patterns with anxiety and depression symptoms among youth with chronic pain while adjusting for covariates including age,sex,ethnicity,primary caregivers’education level,overweight status,and household federal poverty level.Results:Overall,our results indicated that PA was negatively associated with anxiety and depressive symptoms.Specifically,youth with chronic pain who engaged in at least 60-minute PA for 1-3 days,4-6 days,or every day reported significantly lower likelihood of experiencing symptoms of anxiety(OR=0.71,95%CI:0.60-0.84;OR=0.44,95%CI:0.36-0.53;OR=0.50,95%CI:0.40-0.63,respectively;all p-value<0.001)and depression(OR=0.63,95%CI:0.53-0.75;OR=0.38,95%CI:0.31-0.47;OR=0.46,95%CI:0.36-0.59,respectively;all p-value<0.001)symptoms compared to those with 0 days.Conversely,SB(operationalized via the proxy screen time)was positively associated with anxiety and depression symptoms.Youth with chronic pain who reported 4 or more hours of daily screen time had significantly higher odds of experiencing symptoms of anxiety(OR=2.17,95%CI:1.52-3.09,p<0.001)and depression(OR=2.30,95%CI:1.48-3.59,p<0.001).Furthermore,youth with chronic pain who engaged in higher PA levels and reported lower SB levels had a lower likelihood of experiencing symptoms of anxiety(OR=0.68,95%CI:0.52-0.87,p=0.003)and depression(OR=0.49,95%CI:0.34-0.70,p<0.001)symptoms compared to those with lower PA levels and higher SB levels.Conclusions:Higher PA levels and lower SB levels were associated with a reduced likelihood of developing anxiety and depression symptoms,which are indicative of internalizing problems,among youth with chronic pain.Future public health actions in this vulnerable population should prioritize intervention programs that promote PA engagement to reduce SB levels.
文摘There is no way around it.Regular physical activity(PA)and a high-quality diet are essential to promoting good health and prolonging life in middle-aged and older adults.In the November 2024 Issue of the Journal of Sport and Health Science,Ding et al.
文摘In recent years,insufficient physical activity has coincided with suboptimal health among university students.Drawing on the Suboptimal Health Status(SHS)framework,this study surveyed 314 students from multiple provinces/municipalities in China.Physical activity was assessed with a physical activity level scale,and health status with the Sub-Health Measurement Scale Version 1.0(SHMS V1.0).Correlation and multiple regression analyses were used to test associations.Physical exercise was positively associated with overall health(r=0.515,p<0.001)and,after adjusting for sex,only-child status,and place of origin,remained a signifi cant predictor of better health(β=0.515,t=10.512,p<0.001).Sex was associated with exercise level,whereas other demographic variables showed no signifi cant eff ects on health status.These fi ndings suggest that promoting moderate-to-vigorous physical activity and campus sport participation may improve students’physiological,psychological,and social adaptation,providing practical guidance for health promotion and exercise prescription in higher education.
基金supported by Peking University,the National Natural Science Foundation of China,the National Institute on Aging and the World Bank。
文摘Background It remains unclear whether sleep duration and physical activity(PA)trajectories in middle-aged and older adults are associated with different risks of cardiovascular diseases(CVDs).This study aimed to explore the trajectories of total sleep duration and PA among middle-aged and older Chinese adults and their impact on CVD risk.Methods This study was based on the China Health and Retirement Longitudinal Study.12009 adults aged 45 years and older from five waves were included.CVD events were measured by self-reports of heart disease and stroke.We first used groupbased trajectory modeling to identify total sleep duration and PA trajectories from 2011 to 2020,and then employed logistic regression models to analyze their risk for CVD.Results We identified three sleep duration and PA trajectories.The risk of heart disease increased by 33%(OR=1.31,95%CI:1.12-1.53)for the short sleep duration trajectory(vs.moderate sleep duration trajectory),by 40%(OR=1.40,95%CI:1.06-1.84)for the high decreasing PA trajectory,and by 20%(OR=1.20,95%CI:1.01-1.42)for the low stable PA trajectory(vs.high stable PA trajectory),respectively.Similar results for stroke and CVD as the outcomes were also observed,but the higher risk of stroke in the high decreasing PA trajectory group was not statistically significant.The joint effects of sleep and PA showed lower risks of heart disease and stroke in trajectories with moderate or long sleep duration and high stable PA compared with short sleep duration and a low stable PA trajectory.Conclusions Short total sleep duration,high decreasing PA,and low stable PA trajectories could increase the risk of CVDs among middle-aged and older adults.Long-term moderate to long total sleep durations and high stable PA trajectories might be optimal for preventing CVDs.
基金funded by the Mason Foundation National Medical Program(MAS2015F053).
文摘Objectives:People living with myalgic encephalomyelitis/chronic fatigue syndrome(ME/CFS)may face unique barriers to physical activity.Active video games may overcome these barriers and increase physical activity.The primary aim of this pilot study was to determine the feasibility and acceptability of active video games to increase physical activity levels of people with ME/CFS.Methods:A mixed method design was employed.Adults living with ME/CFS were randomised to a six-month intervention of(1)pacing,(2)pacing and conventional physical activity,or(3)pacing and active video gaming.Feasibility and acceptability were determined through semi-structured interviews.Health-related outcomes(e.g.,physical activity,blood samples,quality of life,and functioning)were also collected.Results:Fifteen people were assigned an intervention group with 12 completing.Three themes were identified from post-intervention interviews(1)positivity led to overall acceptability,(2)flexibility enabled participant autonomy,and(3)knowledge was gained about the self.No changes were seen in physical activity levels.An active video gaming intervention is acceptable but not feasible for people living with ME/CFS.Conclusions:Taken together,results suggest that physical activity can be managed safely by some people living with ME/CFS.Trial registration ACTRN12616000285459.
基金supported in part by the intramural research programs at the National Institute on Aging and National Cancer Institute(USA)supported by the Spanish Ministry of Science,Innovation and Universities under Beatriz Galindo's 2022 fellowship program(BG22/00075).
文摘Background:A shift from self-reports to wearable sensors for global physical activity(PA)surveillance has been recommended.The conventional use of a generic cut-point to assess moderate-to-vigorous PA(MVPA)is problematic as these cut-points are often derived from non-representative samples under non-ecological laboratory conditions.This study aimed to develop age-and sex-(age-sex)specific cut-points for MVPA based on population-standardized values as a feasible approach to assess the adherence to PA guidelines and to investigate its associations with all-cause mortality.Methods:A total of 7601 participants(20-85+years)were drawn from the 2003-2004 and 2005-2006 National Health and Nutrition Examination Surveys(NHANES).Minutes per week of MVPA were assessed with a hip-worn accelerometer.Counts per minute(CPM)were used to define an age-sex specific target intensity,representing the intensity each person should be able to reach based on their age and sex.Age-sex specific MVPA cut-points were defined as any activity above 40%of the target intensity.These population-and free-living-based age-sex specific cut-points overcome many of the limitations of the standard generic cut-point approach.For comparison,we also calculated MVPA with a generic cut-point of 1952 CPM.Both approaches were compared for assessing adherence to PA guidelines and association of MVPA with allcause mortality(ascertained through December 2015).Results:Both approaches indicated that 37%of the sample met the 150+min/week guideline.The generic cut-point approach showed a trend to inactivity with age,which was less pronounced using the age-sex specific cut-points.Overall mortality rates were comparable using generic cutpoint(hazard ratio(HR)=0.61,95%confidence interval(95%CI):0.50-0.73)or age-sex specific cut-points(HR=0.57,95%CI:0.50-0.66)for the entire sample.The generic cut-point method revealed an age-and sex-related gap in the benefits of achieving 150+min/week of MVPA,with older adults showing an 18%greater reduction in mortality rates than younger adults,and a larger difference in women than in men.This disparity disappeared when using age-sex specific cut-points.Conclusion:Our findings underscore the value of age-sex specific cut-points for global PA surveillance.MVPA defined with age-sex specific thresholds was associated with all-cause mortality and the dose-response was similar for all ages and sexes.This aligns with the single recommendation of accumulating 150+min/week MVPA for all adults,irrespective of age and sex.This study serves as a proof of concept to develop this methodology for PA surveillance over more advanced open-source acceleration metrics and other national and international cohorts.
基金funded by the following projects:National Social Science Fund Project“The Empowerment Mechanism of Physical Exercise on Emotional Regulation in Adolescents”(23BTY116)Leshan Normal University 2024 Research Cultivation Project:“Research on the Trajectory Effect of Family Cumulative Risk and Home-based Activity of Adolescents”(KYPY2025-0014)+1 种基金Key Humanities and Social Sciences Cultivation Project of Leshan Normal University:“Research on the Sequence Difference of Knowledge and Behavior of Physical Activity among Adolescents and the Compensation Mechanism”and Sichuan Province College Students’Sports Association Annual Project“The Trajectory Effect of Family Cumulative Risk and Adolescents’Home Physical Activity”(23CDTXQ004).
文摘Background With the rapid growth of internet usage,adolescent cyberbullying has become a pressing issue.This study examines the longitudinal impact of leisure-time physical activity and peer relationships on cyberbullying over a one-year period,drawing on the Stage-Environment Fit Theory and the Interpersonal Relationship Theory.Methods A three-wave longitudinal study was conducted over one year,involving 896 middle school students from five schools in Sichuan,Jiangsu,and Guangdong,China,selected to ensure regional diversity.Participants were recruited using stratified random sampling,and data were collected at four-month intervals.Leisure-time physical activity,peer relationships,and cyberbullying behaviors were assessed using validated scales.Data were analyzed using latent growth modeling(LGM)and structural equation modeling(SEM)to examine longitudinal effects and mediation relationships.Results(1)Leisure-time physical activity,peer relationships,and cyberbullying behaviors remained relatively stable over time.(2)Both leisure-time physical activity and peer relationships significantly reduced future cyberbullying incidents,with physical activity also enhancing subsequent peer relationships.(3)Peer relationships partially mediated the effect of leisure-time physical activity on cyberbullying,indicating that improved peer interactions contributed to a reduction in cyberbullying behaviors.Conclusion This study found that leisure-time sports activities and peer relationships are important factors affecting cyberbullying,and peer relationships play a partial mediating role in it.The results provide empirical support for understanding the formation mechanism and influencing factors of cyberbullying.
基金funded by the National Natural Science Foundation of China(Grant 72174216)。
文摘Objectives Physical activity during pregnancy benefits both women and their fetuses;however,the prevalence of physical inactivity is high among pregnant women in the first trimester.This study aimed to examine physical activity patterns among pregnant Chinese women in the first trimester and clarify the characteristics associated with physical inactivity in the first trimester.Methods This cross-sectional study was conducted at three Class-A tertiary hospitals in Guangzhou,city,China,from December 2021 to June 2022.A total of 1,283 pregnant women were enrolled.The Pregnancy Physical Activity Questionnaire and a sociodemographic and obstetric data sheet collected information in the first trimester.Results The prevalence of physical inactivity among Chinese pregnant women was 51%.Pregnant women spent the most time in the domains of household/caregiving activities(median 38.25 h/week)and sedentary activities(median 54.25 h/week).Characteristics of pregnant women who were more likely to be physically inactive included younger age(OR:1.413,95%CI:1.291,1.767;P=0.002),unmarried(OR:2.976,95%CI:1.573,5.630;P=0.001),lower monthly income(OR:1.945,95%CI:1.535,2.464;P=0.001),self-paid medical care(OR:1.472,95%CI:1.140,1.900;P=0.003),nulliparous(OR:3.169,95%CI:2.504,4.009;P=0.001),inadequate knowledge about physical activity during pregnancy(OR:1.797,95%CI:1.432,2.255;P=0.001),husbands with no physical activity habits(OR:1.353,95%CI:1.081,1.693;P=0.008),and no prepregnancy physical activity habits(OR:1.832,95%CI:1.433,2.340;P=0.001).Conclusions Physical inactivity was prevalent among pregnant women in the first trimester.Promoting physical activity could be incorporated into routine antenatal care.Healthcare professionals should assess and monitor the physical activity of pregnant women and provide consultations on physical activity during their first trimester,particularly for pregnant women with characteristics associated with physical inactivity.
基金supported by the Emerging Interdisciplinary Platform for Medicine and Engineering in Sports(EIPMES)and R&D Program of Beijing Municipal Education Commission(grant No.KM202310029001).
文摘A growing global trend indicates a decline in semen quality,with a lack of physical activity identified as one of the contributing factors.Exercise is medication,and numerous studies have explored its effects on semen quality.However,there is no consensus on the most effective type and intensity of exercise for improving semen quality,owing to inconsistent findings across studies.These discrepancies may be attributable to variations in study populations(e.g.,healthy versus infertile individuals)and research methodologies(e.g.,observational versus interventional studies).This paper reviews the existing literature from the databases PubMed,Web of Science,and Google Scholar,reclassifying articles on their subject and research designs to delineate the relationship between exercise and semen quality.It also summarizes the mechanisms through which exercise influences semen quality,including hormonal regulation,oxidative stress,and inflammatory factors.
基金supported by the Action Medical Research UK and Chartered Society of Physiotherapy the Charitable Trust。
文摘Objectives:Physical activity(PA)levels in young people with cerebral palsy(YPwCP)remain consistently low.Previous research suggests that fitness parameters such as muscular strength and cardiovascular capacity are interrelated with mobility and PA levels in YPwCP.This study aimed to(1)describe fitness parameters and PA levels in YPwCP,(2)explore associations between fitness parameters and PA,and(3)evaluate the reliability of accelerometer-based PA measurement.Methods:A cross-sectional study was conducted with an embedded test–retest reliability assessment of accelerometermeasured PA over a one-month interval.Participants included 36 YPwCP(19 males,17 females;mean age 15.5±0.7 years),classified within GMFCS levels I–III.Cardiorespiratory endurance(VO2max)was assessed using an incremental cycle ergometer test,and leg power was measured using the FiveTimes Sit-to-Stand(5xSTS).PA was measured via self-report using the Physical Activity Questionnaire for Adolescents(PAQ-A)and via device-measured data using a wrist-worn accelerometer over seven consecutive days.Results:We found low levels of PA.The 5xSTS completion time showed moderate to strong correlations with selfreported PA(ρ=−0.384,p≤0.01)and device-measured vigorous PA(ρ=−0.566,p≤0.01).VO2max was positively but not significantly associated with total PA(ρ=0.173)and moderate-to-vigorous PA(ρ=0.115).Accelerometry demonstrated good reliability(ICC=0.796).Conclusions:These findings suggest that accelerometer has good reliability in YPwCP but highlight low levels of PA measured by self-report and accelerometer.Higher lowerlimb power,assessed by faster 5xSTS test,was associated with greater PA.
