Objective:To explore the rehabilitation effect of upper limb rehabilitation robots combined with isokinetic muscle strength training on hemiplegic patients in the recovery phase of stroke,and to provide a more effecti...Objective:To explore the rehabilitation effect of upper limb rehabilitation robots combined with isokinetic muscle strength training on hemiplegic patients in the recovery phase of stroke,and to provide a more effective intervention plan for clinical rehabilitation treatment.Methods:One hundred and sixty type 2 stroke patients with hemiplegia in recovery phase treated at Jintan First People’s Hospital from May 2020 to May 2025 were selected as the research subjects.They were divided into a control group(n=80)and an observation group(n=80)using a random number table method.The control group received isokinetic muscle strength training,while the observation group received additional upper limb rehabilitation robot-assisted intervention based on the control group’s treatment.The general information(age,gender,course of disease),Brunnstrum staging,Barthel index,FMA score,and facial expression pain score were compared between the two groups.Results:After treatment,the indicators of both groups improved compared to before treatment.The observation group showed significant advantages in improving various indicators.In terms of Brunnstrum staging,the number of patients in stage IV and above was significantly higher than that in the control group;in terms of the Barthel index,the increase was more significant than that of the control group(P=0.000<0.001).In terms of the FMA score,the increase was more pronounced(P=0.000<0.001);and in terms of facial expression pain assessment,the decrease was more evident(P=0.000<0.01).Conclusion:The combination of upper limb rehabilitation robots and isokinetic muscle strength training can significantly improve the recovery of limb function and activities of daily living in hemiplegic patients during the recovery phase of stroke,and reduce pain.Compared with simple isokinetic muscle strength training,the rehabilitation effect is better,and it is worthy of clinical application.展开更多
The first in vivo measurements of serial sarcomere number in human muscles before and after eccentric strength training have just been published and the results will interest anyone involved with sport or health:Train...The first in vivo measurements of serial sarcomere number in human muscles before and after eccentric strength training have just been published and the results will interest anyone involved with sport or health:Training the hamstrings 3 times per week for 9 weeks with the Nordic hamstring exercise was found to increase the number of sarcomeres in series in the biceps femoris long head(BFlh)by≥25%.1 In this commentary,we highlight an additional,paradoxical finding,which was not discussed by the authors;namely that the substantial serial sarcomere addition must have been accompanied by a subtraction of sarcomeres in parallel to match the relatively small increase in muscle volume after training.展开更多
Muscle strength training can effectively reduce muscle atrophy,activate muscle tissue and promote muscle strength recovery and growth.Based on our previous research,we developed four muscle strength training strategie...Muscle strength training can effectively reduce muscle atrophy,activate muscle tissue and promote muscle strength recovery and growth.Based on our previous research,we developed four muscle strength training strategies by further imitating the clinical muscle strength training methods,namely,Isokinetic centriPetal-centriPetal Exercise(IPPE),Isokinetic centriPetal-centriFuge exercise(IPFE),Isokinetic centriFuge-centriPetal Exercise(IFPE)and Isokinetic centriFuge-centriFuge Exercise(IFFE).To quantitatively evaluate the performance of the developed strategies,experiments were carried out with elbow and knee joints as examples,and muscle Endurance Ratio(ER),Flexion and Extension torque ratio(F/E)and the degree of muscle activation were extracted and calculated based on angle/torque and Surface ElectroMyoGraphy(sEMG)signals.Experimental results showed that the ER value of IFFE was significantly reduced compared with IPPE,while the F/E value of IFPE was significantly increased;this suggests that muscle centrifugation corresponds to higher training intensity;In addition,flexor and extensor muscle groups showed different levels of muscle activation in different training strategies.The results reveal that combining different muscle movement characteristics,isokinetic exercise can exert special muscle strength training effects.The study can lay the foundation for exploring subject-specific adaptive muscle strength training strategies to better adapt to different levels of muscle strength.展开更多
BACKGROUND Patients with Parkinson's disease(PD)exhibit symptoms such as antecollis(AC)and camptocormia(CC).The pathology of these two conditions is unclear.Additionally,standard treatment methods have not been es...BACKGROUND Patients with Parkinson's disease(PD)exhibit symptoms such as antecollis(AC)and camptocormia(CC).The pathology of these two conditions is unclear.Additionally,standard treatment methods have not been established.The article reports the case of a 65-year-old female patient with AC and CC who was treated with central and peripheral interventions to alleviate symptoms.CASE SUMMARY We present the case of a 65-year-old female PD patient with AC and CC.The course of the disease was 5 years.She was treated with rehabilitation strategies such as sensory tricks and trunk strength training.During the inpatient period,we compared and analyzed the patient's gait,rehabilitation assessment scale score,and angles of her abnormal trunk posture in the first week,the third week,and the fifth week.The patient's stride length increased,indicating that the patient's walking ability was improved.The Unified Parkinson's Disease Scale Part Three score and CC severity score decreased.Furthermore,the score of the other scale increased.In addition,the patient showed significant improvements in AC,upper CC,and lower CC angles.CONCLUSION This case study suggested that sensory tricks and trunk strength training are beneficial and safe for patients with AC and CC.展开更多
The shot put is a sport that requires very high explosive power and precise technique.Strength training occupies the core position in the training of shot-putters,which can not only improve the throwing distance of at...The shot put is a sport that requires very high explosive power and precise technique.Strength training occupies the core position in the training of shot-putters,which can not only improve the throwing distance of athletes but also enhance their competitive state and prevent sports injuries.The purpose of this paper is to analyze the principles,classification,methods,and specific exercises of strength training in the training of shot-putters,in order to provide scientific training guidance for shot-putters.展开更多
Since free combat is a competitive sport that flexibly utilizes kicking,punching,wrestling,and holding techniques to defeat the opponent,a good core strength of athletes can help to improve the technical level,enhance...Since free combat is a competitive sport that flexibly utilizes kicking,punching,wrestling,and holding techniques to defeat the opponent,a good core strength of athletes can help to improve the technical level,enhance the quality of movements,and protect the joints and muscles.In order to carry out core strength training in free combat teaching with high quality,firstly,it is necessary for coaches to carry out simple training,centralized training,and extended training according to the basic planning of adaptation-stabilization-improvement.Secondly,it is also important to test the athlete’s physical and athletic qualities before implementing the specific training plan,optimize the training program,and carry out statistical analysis of the stage training data in order to achieve the best training effect.展开更多
Background:Technological advancements in modern military and acrobatic jet planes have resulted in extraordinary psychophysiological loads being exerted upon flying personnel,including inducing neck and back pain.The ...Background:Technological advancements in modern military and acrobatic jet planes have resulted in extraordinary psychophysiological loads being exerted upon flying personnel,including inducing neck and back pain.The purpose of this study was to examine the effects of 12 weeks of functional strength training on 1)the volume and strength of the neck and shoulder muscles and 2)muscular activity upon exposure to helmets of different masses and elevated Gz forces in a long-arm centrifuge in high-performance aircraft personnel.Methods:Eighteen participants underwent 12 weeks of functional strength training(n=12)or the control protocol(n=6)without additional strength training.Pre-and post-intervention tests included evaluations of isometric strength of the head extensor muscles,flexion,and lateral flexion and rotation,as well as magnetic resonance imaging(MRI)to measure the volume of the m.sternocleidomastoideus,m.trapezius,and deep neck muscles.Furthermore,during a long-arm centrifuge(+1.4 and+3Gz)protocol,the muscular activity levels of the m.sternocleidomastoideus,m.trapezius and m.erector spinae muscles were assessed without a flight helmet,with a helmet,and with a helmet and night vision goggles.Each participant’s perception of muscular strain was noted immediately after the long-arm centrifuge protocol.Results:The maximal isometric strength in all exercises and muscle volumes increased in the training group but not the control group(P<0.05).Relative muscle activity(%MVC)with a helmet decreased after the intervention in the training but not the control group(P=0.01).Relative muscle activity while wearing a helmet and night vision goggles was higher after intervention in the control group than in the training group(P<0.01).The perceived muscular strain of the neck muscles induced by the long-arm centrifuge did not differ between the groups.Conclusions:Twelve weeks of functional strength training improves the maximal isometric strength and volume of neck and shoulder muscles and leads to lower relative muscle activation upon exposure to elevated Gz forces in a long-arm centrifuge.展开更多
Different from limb rehabilitation training,the purpose of muscle strength training is to reduce muscle atrophy and increase muscle strength and tolerance through strength training of limb muscles,and then improve the...Different from limb rehabilitation training,the purpose of muscle strength training is to reduce muscle atrophy and increase muscle strength and tolerance through strength training of limb muscles,and then improve the muscle strength level of muscles(groups),mainly for sports fitness and muscle strengthening groups and patients with muscle atrophy or muscle weakness caused by various diseases.In this paper,we developed a new reconfigurable muscle strength training robot,a bionic robot by imitating physicians to conduct muscle strength training for patients,which was developed with six training modes for 17 joint movements,that is,the shoulder flexion/extension,the shoulder internal/external rotation,the shoulder adduction/abduction,the elbow flexion/extension,the wrist supination/pronation,the wrist flexion/extension,the wrist radial/ulnar deviation,the hip flexion/extension,the hip internal/external rotation,the hip adduction/abduction,the knee flexion/extension,the ankle dorsiflexion/plantarflexion,the ankle adduction/abduction,the ankle inversion/eversion,the waist flexion/extension,the waist left/right rotation,and the waist left/right flexion.The reconfigurable mechanism was designed with fully electric adjuster and reconfigurable adaptors deployed on the driving unit,and six training modes were developed,namely,continuous passive motion,active exercise,passive–active exercise,isotonic exercise,isometric exercise and isokinetic exercise.Experiments with knee joint and elbow joint have shown that the developed reconfigurable muscle strength training robot can realize the multi-mode trainings for the 17 joint movements.展开更多
The thesis analyzed the internal mechanism of technique formation of all kinds of dance action in sports dance, and its movement technical features mainly presented in five aspects： First, the control technology to m...The thesis analyzed the internal mechanism of technique formation of all kinds of dance action in sports dance, and its movement technical features mainly presented in five aspects： First, the control technology to maintain the correct posture; Second, fast and rhythmic bouncing technique of the body weight; Third, the parabolic shape and spiral motion technology of the body center of gravity; Four, strong wiggler technology of hip, waist and abdomen; Five, the rhythm techniques of chest, back, shoulders and arms. Aiming at the technical features for sports dance project, we can summarize the methods and means of training control force, speed strength, strength endurance and relative strength of sports dancing athletes and raise several important principles that should be followed.展开更多
Obesity has a complex multifactorial etiology and is characterized by excessive accumulation of adipose tissue.Visceral adipose tissue has deleterious effects on health because it secretes large amounts of inflammator...Obesity has a complex multifactorial etiology and is characterized by excessive accumulation of adipose tissue.Visceral adipose tissue has deleterious effects on health because it secretes large amounts of inflammatory cytokines.Nutritional calorie restriction associated with strength training may be useful in managing chronic systemic inflammation.This study aimed to evaluate the acute effect of a single strength-training session on plasma adipokine levels in sedentary,overweight,and obese young men.This study included twelve men(Age:[34.95±9.77]years;Height:[174.16±3.66]centimeter[cm];Weight:[97.83±12.87]kilogram(kg);body mass index[BMI]:[32.30±4.51]kg/m2),who performed a single strength training session.The strength training protocol consisted of 4 sets of 12 repetitions in the following six exercises,45°leg press,bench press,leg extension,machine row,leg curl,and shoulder press.Blood samples were collected before,immediately after,and 1-h subsequent after strength training.The plasma levels of resistin and leptin were measured.A significant decrease in resistin levels were found 1 h after the strength training session if compared to levels before the training session(pre-[before][2390±1199]picograms per milliliter[pg/mL]vs post-1 h[1-h subsequent][1523±798],6 pg/mL,p=0.0028).The plasma leptin levels did not differ at any time point.In conclusion,a very well controlled single session of strength training significantly decreased the plasma levels of resistin without altering the concentration of leptin in overweight and obese individuals.This effect,at least in part,supports the benefits of exercise by reducing the low grade inflammation and insulin resistance in obesity.展开更多
Muscle deconditioning due to hospitalisation is problematic, causing delayed discharges, more nursing, carer, or social service support following discharge, and possible discharge to a care home rather than the patien...Muscle deconditioning due to hospitalisation is problematic, causing delayed discharges, more nursing, carer, or social service support following discharge, and possible discharge to a care home rather than the patient’s own home. Muscle deconditioning is associated with increased mortality, infections, depression, and reductions in patient mobility and ability to engage in their activities of daily living. Preserving muscle strength and function should form part of patients’ rehabilitation plans. Progressive resistance training (PRE) offers the most cost-effective way of preserving muscle strength and function;however, it is not routinely carried out in hospitals. A leg strengthening device (the S-Press) has been developed with the aim of improving access to effective PRE for adults. Using a qualitative approach, thematic analysis of interviews with physiotherapists, patients, and relative carers about their experience of using the S-Press provided insight into integrating PRE into patients’ rehabilitation, what promoted or prevented its use, and the outcomes associated with its use. Four overall themes emerged from the data. “Experience of Users” described that the S-Press was accessible, convenient, time efficient, portable, and manoeuvrable, and it provided an objective measure of progress. “Facilitators” included findings around how the S-Press was easy to use, motivational, and comfortable when in use. “Barriers” comprised the inability of some patients to use the S-Press independently and the identification of obstacles that prevented consistent use. “Impact and Benefits” represented the perceptions of increased leg strength and psychological benefits. The S-Press is beneficial for patients’ rehabilitation by offering PRE that is simple and easy to use, acceptable to both patients and professionals, and can be integrated as part of patients’ rehabilitation plans.展开更多
Planning training programs for strength-power track and field athletes require an understanding of both training principles and training theory. The training principles are overload, variation, and specificity. Each o...Planning training programs for strength-power track and field athletes require an understanding of both training principles and training theory. The training principles are overload, variation, and specificity. Each of these principles must be incorporated into an appropriate system of training. Conceptually, periodization embraces training principles and offers advantages in planning, allowing for logical integration and manipulation of training variables such as exercise selection, intensification, and volume factors. The adaptation and progress of the athlete is to a large extent directly related to the ability of the coach/athlete to create and carry an efficient and efficacious training process. This ability includes： an understanding of how exercises affect physiological and performance adaptation （i.e., maximum force, rate of force development, power, etc.）, how to optimize transfer of training effect ensuring that training exercises have maximum potential for carryover to performance, and how to implement programs with variations at appropriate levels （macro, meso, and micro） such that fatigue management is enhanced and performance progress is optimized.展开更多
Purpose:This meta-analytical study aimed to explore the effects of resistance training(RT) volume on body adiposity,metabolic risk,and inflammation in postmenopausal and older females.Methods:A systematic search was p...Purpose:This meta-analytical study aimed to explore the effects of resistance training(RT) volume on body adiposity,metabolic risk,and inflammation in postmenopausal and older females.Methods:A systematic search was performed for randomized controlled trials in PubMed,Scopus,Web of Science,and SciELO.Randomized controlled trials with postmenopausal and older females that compared RT effects on body adiposity,metabolic risk,and inflammation with a control group(CG) were included.Independent reviewers selected the studies,extracted the data,and performed the risk of bias and certainty of the evidence(Grading of Recommendations,Assessment,Development,and Evaluation(GRADE)) evaluations.Total body and abdominal adiposity,blood lipids,glucose,and C-reactive protein were included for meta-analysis.A random-effects model,standardized mean difference(Hedges’ g),and 95% confidence interval(95%CI) were used for meta-analysis.Results:Twenty randomized controlled trials(overall risk of bias:some concerns;GRADE:low to very low) with overweight/obese postmenopausal and older females were included.RT groups were divided into low-volume RT(LVRT,~44 sets/week) and high-volume RT(HVRT,~77 sets/week).Both RT groups presented improved body adiposity,metabolic risk,and inflammation when compared to CG.However,HVRT demonstrated higher effect sizes than LVRT for glucose(HVRT=-1.19;95%CI:-1.63 to-0.74;LVRT=-0.78;95%CI:-1.15 to-0.41) and C-reactive protein(HVRT=-1.00;95%CI:-1.32 to-0.67;LVRT=-0.34;95%CI,-0.63 to-0.04)) when compared to CG.Conclusion:Compared to CG,HVRT protocols elicit greater improvements in metabolic risk and inflammation outcomes than LVRT in overweight/obese postmenopausal and older females.展开更多
Purpose This study aimed to describe the national prevalence of Chinese children and adolescents who met the World Health Organization muscle-strengthening exercise(MSE)recommendations and identify correlates of meeti...Purpose This study aimed to describe the national prevalence of Chinese children and adolescents who met the World Health Organization muscle-strengthening exercise(MSE)recommendations and identify correlates of meeting the MSE recommendations.Methods Cross-sectional data from the 2019 Physical Activity and Fitness in China—The Youth Study,a nationally representative sample of Chinese children and adolescents(n=80,413;mean age=13.7 years;53.9%girls)and their parents,were analyzed.Children and adolescents who reported engaging≥3 days(up to 7 days)of MSE per week were classified as meeting the MSE recommendations.MSE,demographics,lifestyle behaviors(sport participation,moderate-to-vigorous physical activity,screen time,and sleep duration),exercise intention,peer and parental support,and parental MSE participation were assessed through self-reports.Logistic regression models were used to determine the correlates of meeting the MSE recommendations.The analyses were completed in 2020.Results Overall,39.3%of children and adolescents met the MSE recommendations.Girls,10th-12th graders,minorities,those from lower income households and those from families with lower parental education were less likely to meet the MSE recommendations.Children and adolescents who were proficient in≥2 sports were more likely to meet the MSE recommendations(adjusted odds ratio(aOR)=1.44,95%confidence interval(95%CI):1.26-1.65),as were those with more moderate-to-vigorous physical activity(aOR=1.57,95%CI:1.53-1.61).Additionally,children and adolescents with high exercise intention(aOR=1.60,95%CI:1.51-1.69),those whose parents met the adult MSE recommendations(aOR=1.46,95%CI:1.40-1.52),and those who received high peer(aOR=1.27,95%CI:1.20-1.34)and parental support(aOR=1.07,95%CI:1.04-1.12)were more likely to meet the MSE recommendations.Conclusion Less than two-fifths of Chinese children and adolescents met the World Health Organization MSE recommendations.The correlates identified in our study can help inform the development of school and community based strategies and policies to enhance participation in MSE and improve muscular fitness of all Chinese children and adolescents.展开更多
BACKGROUND Chronic heart failure(CHF)is a complex syndrome characterized by a progressive reduction of the left ventricular(LV)contractility,low exercise tolerance,and increased mortality and morbidity.Diastolic dysfu...BACKGROUND Chronic heart failure(CHF)is a complex syndrome characterized by a progressive reduction of the left ventricular(LV)contractility,low exercise tolerance,and increased mortality and morbidity.Diastolic dysfunction(DD)of the LV,is a keystone in the pathophysiology of CHF and plays a major role in the progression of most cardiac diseases.Also,it is well estimated that exercise training induces several beneficial effects on patients with CHF.AIM To evaluate the impact of a cardiac rehabilitation program on the DD and LV ejection fraction(EF)in patients with CHF.METHODS Thirty-two stable patients with CHF(age:56±10 years,EF:32%±8%,88%men)participated in an exercise rehabilitation program.They were randomly assigned to aerobic exercise(AER)or combined aerobic and strength training(COM),based on age and peak oxygen uptake,as stratified randomization criteria.Before and after the program,they underwent a symptom-limited maximal cardiopulmonary exercise testing(CPET)and serial echocardiography evaluation to evaluate peak oxygen uptake(VO2peak),peak workload(Wpeak),DD grade,right ventricular systolic pressure(RVSP),and EF.RESULTS The whole cohort improved VO2peak,and Wpeak,as well as DD grade(P<0.05).Overall,9 patients(28.1%)improved DD grade,while 23(71.9%)remained at the same DD grade;this was a significant difference,considering DD grade at baseline(P<0.05).In addition,the whole cohort improved RVSP and EF(P<0.05).Not any between-group differences were observed in the variables assessed(P>0.05).CONCLUSION Exercise rehabilitation improves indices of diastolic and systolic dysfunction.Exercise protocol was not observed to affect outcomes.These results need to be further investigated in larger samples.展开更多
Background: Although handgrip strength is a biomarker for morbidity/mor-tality, there is lack of evidence on the effects of resistance training on handgrip strength in healthy adults of all ages. Objective: The aim of...Background: Although handgrip strength is a biomarker for morbidity/mor-tality, there is lack of evidence on the effects of resistance training on handgrip strength in healthy adults of all ages. Objective: The aim of this systematic review was to assess the impact of resistance training on handgrip strength in healthy adults. Methods: Five databases/search engines were searched. Studies comparing different types of resistance exercise interventions versus a non-exercised control group on handgrip strength were included. The available data did not allow us to conduct the pre-planned meta-analyses;therefore, only descriptive statistics were performed to summarize the data. Results: Twenty studies (17 randomized and three non-randomized controlled trials) were included, most of which were conducted in older adults. Twelve studies reported no significant difference in the change in handgrip strength between the resistance training and control groups. Two studies showed increases in handgrip strength in the resistance training group compared with the control group. Other studies included results for multi-training groups or left/right hands and found increasing handgrip strength compared to controls, but only in one training group or one hand. Overall, the randomized and non-ran-domized clinical trials presented moderate risk of bias. Conclusions: Due to the lack of low risk-of-bias randomized controlled trials of young and middle-aged adults, different training protocols, and small sample sizes, the existing evidence appears insufficient to support resistance training for increasing handgrip strength in healthy adults. Future studies may seek to discern the optimal way to develop and employ resistance training to improve hand-grip strength.展开更多
Background:The training program promoted improvements of jump abilities throughout the musculoskeletal system including bone markers.The aim of this study is to examine both the acute and chronic response of bone mark...Background:The training program promoted improvements of jump abilities throughout the musculoskeletal system including bone markers.The aim of this study is to examine both the acute and chronic response of bone markers to resistance training program.Methods:Ten female students(age:18±0.7 years,body mass:63±3.6 kg;height:164±5.2 cm)participated in this study.They were recruited for a back-squat training program for 12 weeks,two days/week.The full-back squat protocol consisted of 3–5 sets×3–8 repetitions at 45–55%one repetition maximum.Testing sessions included a 5 jump test(5JT),standing long jump(SLJ),drop jump(DJ),and vertical jump(VJ).Results:Substantial improvements in all testing jumps(5JT:∆10%;P=0.000;ES=1.72;SLJ:∆7%;P=0.000;ES=1.33;DJ:∆11%;P=0.000;ES=0.72;VJ:∆20%;P=0.000;ES=1.84)were found during post program in comparison to pre-program results.Moreover,a significant change(P≤0.05)of bone markers during post-exercise compared to pre-exercise either before or after the training program.Only collagen type I carboxy-terminal peptide(CICP)levels elevated after the training program(pre-exercise only)compared to former levels.Conclusion:12 weeks of back-squat training program resulted greater acute improvements of jump abilities with adaptation in all musculoskeletal system including bone formation.展开更多
There is a recent and growing interest in assessing differential responders to resistance training(RT)for diverse outcomes.Thus,the individual ability to respond to an intervention for a specific measurement,called re...There is a recent and growing interest in assessing differential responders to resistance training(RT)for diverse outcomes.Thus,the individual ability to respond to an intervention for a specific measurement,called responsiveness,remains to be better understood.Thus,the current study aimed to summarize the available information about the effects of RT on functional performance and muscle strength,power,and size in healthy adults,through the prevalence rate in different responsiveness classifications models.A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA)and was registered at the International Prospective Register of Systematic Reviews(PROSPERO,CRD42021265378).PubMed/MEDLINE,Scopus,and Embase databases were systematically searched in October 2023.A total of 13 studies were included,totaling 921 subjects.Only two studies presented a low risk of bias.Regarding the effectiveness of RT,the prevalence rate for non-responders ranged from 0%to 44%for muscle strength,from 0%to 84%for muscle size,and from 0%to 42%for functional performance,while for muscle power,the only study found showed a responsiveness rate of 37%.In conclusion,a wide range of differential responders is described for all variables investigated.However,the evidence summarized in this systematic review suggested some caution while interpreting the findings,since the body of evidence found seems to be incipient,and widely heterogeneous in methodological and statistical aspects.展开更多
Throughout history,cultural norms and stereotypes have discouraged resistance training in women.Today,as awareness and acceptance of resistance training in women has grown,supported by scientific research and advocacy...Throughout history,cultural norms and stereotypes have discouraged resistance training in women.Today,as awareness and acceptance of resistance training in women has grown,supported by scientific research and advocacy,more women are achieving health and performance benefits from resistance training.This narrative review discusses the current scientific literature on sexual dimorphisms,the mechanisms underlying health and performance adaptations of resistance training in women,with implications for program design.In general,the physiological adaptations to resistance training in women are mediated largely by the neuroendocrine and immune systems,similar to in men albeit via some distinct predominant pathways involving sex hormones estrogen,testosterone,growth hormone(GH),and insulin-like growth factor-I(IGF-I).As a result,women may have unique adaptations in terms of muscle hypertrophy,substrate utilization,fatiguability,and recovery.Despite subtle physiological differences,women achieve measurable increases in strength,power and athletic performance via engaging in resistance training programs of sufficient frequency,intensity,and duration.Moreover,beyond performance,resistance training has a favorable impact on women’s health including metabolic health,body composition,bone health,cardiovascular health,mental health,self-esteem,and body image.Resistance training recommendations for men and women are highly similar and goal-dependent,with some specific caveats that need to be addressed in women.As resistance training has become regarded as a key element of programs for achieving performance and health improvements in women,additional research may further our understanding.展开更多
Purpose The aim of this review was to collect data on physical exercise programs in patients with HNC and to analyze the compliance with the Frecuency,Intensity,Time and Type(FITT)and progressive overload principles.M...Purpose The aim of this review was to collect data on physical exercise programs in patients with HNC and to analyze the compliance with the Frecuency,Intensity,Time and Type(FITT)and progressive overload principles.Methods The search strategy identified 1318 articles through February 2022.After deduplication,title and abstract review,and full-text review,15 studies met all the inclusion criteria.The inclusion criteria were randomized controlled trials(RCTs)with interventions involving at least 10 patients,and the intervention protocol included,at least,programmed strength exercise.Results Physical exercise programs were performed only during and after treatment,with durations varying from 6 to 12 weeks.Only 5 studies(33.3%)detailed all the characteristics concerning FITT and progressive overload principles.In addition,10 trials measured the changes in body composition and physical function.In contrast,6 studies included nutritional recommendations or follow-up.Conclusion It has been proven that physical exercise programs may help people with head and neck cancer improve their body composition,strength,and quality of life.To examine the dose/response effects of physical activity more precisely,further information regarding FITT principles and the progression of the load undertaken in the treatments is required.Finally,it is necessary to investigate the optimal time to start a physical exercise program and its impact on survival.展开更多
基金Changzhou Applied Basic Research Program(Project No.:CJ20241042)。
文摘Objective:To explore the rehabilitation effect of upper limb rehabilitation robots combined with isokinetic muscle strength training on hemiplegic patients in the recovery phase of stroke,and to provide a more effective intervention plan for clinical rehabilitation treatment.Methods:One hundred and sixty type 2 stroke patients with hemiplegia in recovery phase treated at Jintan First People’s Hospital from May 2020 to May 2025 were selected as the research subjects.They were divided into a control group(n=80)and an observation group(n=80)using a random number table method.The control group received isokinetic muscle strength training,while the observation group received additional upper limb rehabilitation robot-assisted intervention based on the control group’s treatment.The general information(age,gender,course of disease),Brunnstrum staging,Barthel index,FMA score,and facial expression pain score were compared between the two groups.Results:After treatment,the indicators of both groups improved compared to before treatment.The observation group showed significant advantages in improving various indicators.In terms of Brunnstrum staging,the number of patients in stage IV and above was significantly higher than that in the control group;in terms of the Barthel index,the increase was more significant than that of the control group(P=0.000<0.001).In terms of the FMA score,the increase was more pronounced(P=0.000<0.001);and in terms of facial expression pain assessment,the decrease was more evident(P=0.000<0.01).Conclusion:The combination of upper limb rehabilitation robots and isokinetic muscle strength training can significantly improve the recovery of limb function and activities of daily living in hemiplegic patients during the recovery phase of stroke,and reduce pain.Compared with simple isokinetic muscle strength training,the rehabilitation effect is better,and it is worthy of clinical application.
文摘The first in vivo measurements of serial sarcomere number in human muscles before and after eccentric strength training have just been published and the results will interest anyone involved with sport or health:Training the hamstrings 3 times per week for 9 weeks with the Nordic hamstring exercise was found to increase the number of sarcomeres in series in the biceps femoris long head(BFlh)by≥25%.1 In this commentary,we highlight an additional,paradoxical finding,which was not discussed by the authors;namely that the substantial serial sarcomere addition must have been accompanied by a subtraction of sarcomeres in parallel to match the relatively small increase in muscle volume after training.
基金supported in part by the Beijing Natural Science Foundation under Grant Nos.3232004 and 3222002in part by the National Natural Science Foundation of China under Grant Nos.62373010 and 52175001.
文摘Muscle strength training can effectively reduce muscle atrophy,activate muscle tissue and promote muscle strength recovery and growth.Based on our previous research,we developed four muscle strength training strategies by further imitating the clinical muscle strength training methods,namely,Isokinetic centriPetal-centriPetal Exercise(IPPE),Isokinetic centriPetal-centriFuge exercise(IPFE),Isokinetic centriFuge-centriPetal Exercise(IFPE)and Isokinetic centriFuge-centriFuge Exercise(IFFE).To quantitatively evaluate the performance of the developed strategies,experiments were carried out with elbow and knee joints as examples,and muscle Endurance Ratio(ER),Flexion and Extension torque ratio(F/E)and the degree of muscle activation were extracted and calculated based on angle/torque and Surface ElectroMyoGraphy(sEMG)signals.Experimental results showed that the ER value of IFFE was significantly reduced compared with IPPE,while the F/E value of IFPE was significantly increased;this suggests that muscle centrifugation corresponds to higher training intensity;In addition,flexor and extensor muscle groups showed different levels of muscle activation in different training strategies.The results reveal that combining different muscle movement characteristics,isokinetic exercise can exert special muscle strength training effects.The study can lay the foundation for exploring subject-specific adaptive muscle strength training strategies to better adapt to different levels of muscle strength.
文摘BACKGROUND Patients with Parkinson's disease(PD)exhibit symptoms such as antecollis(AC)and camptocormia(CC).The pathology of these two conditions is unclear.Additionally,standard treatment methods have not been established.The article reports the case of a 65-year-old female patient with AC and CC who was treated with central and peripheral interventions to alleviate symptoms.CASE SUMMARY We present the case of a 65-year-old female PD patient with AC and CC.The course of the disease was 5 years.She was treated with rehabilitation strategies such as sensory tricks and trunk strength training.During the inpatient period,we compared and analyzed the patient's gait,rehabilitation assessment scale score,and angles of her abnormal trunk posture in the first week,the third week,and the fifth week.The patient's stride length increased,indicating that the patient's walking ability was improved.The Unified Parkinson's Disease Scale Part Three score and CC severity score decreased.Furthermore,the score of the other scale increased.In addition,the patient showed significant improvements in AC,upper CC,and lower CC angles.CONCLUSION This case study suggested that sensory tricks and trunk strength training are beneficial and safe for patients with AC and CC.
文摘The shot put is a sport that requires very high explosive power and precise technique.Strength training occupies the core position in the training of shot-putters,which can not only improve the throwing distance of athletes but also enhance their competitive state and prevent sports injuries.The purpose of this paper is to analyze the principles,classification,methods,and specific exercises of strength training in the training of shot-putters,in order to provide scientific training guidance for shot-putters.
文摘Since free combat is a competitive sport that flexibly utilizes kicking,punching,wrestling,and holding techniques to defeat the opponent,a good core strength of athletes can help to improve the technical level,enhance the quality of movements,and protect the joints and muscles.In order to carry out core strength training in free combat teaching with high quality,firstly,it is necessary for coaches to carry out simple training,centralized training,and extended training according to the basic planning of adaptation-stabilization-improvement.Secondly,it is also important to test the athlete’s physical and athletic qualities before implementing the specific training plan,optimize the training program,and carry out statistical analysis of the stage training data in order to achieve the best training effect.
文摘Background:Technological advancements in modern military and acrobatic jet planes have resulted in extraordinary psychophysiological loads being exerted upon flying personnel,including inducing neck and back pain.The purpose of this study was to examine the effects of 12 weeks of functional strength training on 1)the volume and strength of the neck and shoulder muscles and 2)muscular activity upon exposure to helmets of different masses and elevated Gz forces in a long-arm centrifuge in high-performance aircraft personnel.Methods:Eighteen participants underwent 12 weeks of functional strength training(n=12)or the control protocol(n=6)without additional strength training.Pre-and post-intervention tests included evaluations of isometric strength of the head extensor muscles,flexion,and lateral flexion and rotation,as well as magnetic resonance imaging(MRI)to measure the volume of the m.sternocleidomastoideus,m.trapezius,and deep neck muscles.Furthermore,during a long-arm centrifuge(+1.4 and+3Gz)protocol,the muscular activity levels of the m.sternocleidomastoideus,m.trapezius and m.erector spinae muscles were assessed without a flight helmet,with a helmet,and with a helmet and night vision goggles.Each participant’s perception of muscular strain was noted immediately after the long-arm centrifuge protocol.Results:The maximal isometric strength in all exercises and muscle volumes increased in the training group but not the control group(P<0.05).Relative muscle activity(%MVC)with a helmet decreased after the intervention in the training but not the control group(P=0.01).Relative muscle activity while wearing a helmet and night vision goggles was higher after intervention in the control group than in the training group(P<0.01).The perceived muscular strain of the neck muscles induced by the long-arm centrifuge did not differ between the groups.Conclusions:Twelve weeks of functional strength training improves the maximal isometric strength and volume of neck and shoulder muscles and leads to lower relative muscle activation upon exposure to elevated Gz forces in a long-arm centrifuge.
基金supported in part by the National Key R&D Program of China(No.2018YFB1307004)in part by the National Natural Science Foundation of China(Nos.61903011 and 52175001)。
文摘Different from limb rehabilitation training,the purpose of muscle strength training is to reduce muscle atrophy and increase muscle strength and tolerance through strength training of limb muscles,and then improve the muscle strength level of muscles(groups),mainly for sports fitness and muscle strengthening groups and patients with muscle atrophy or muscle weakness caused by various diseases.In this paper,we developed a new reconfigurable muscle strength training robot,a bionic robot by imitating physicians to conduct muscle strength training for patients,which was developed with six training modes for 17 joint movements,that is,the shoulder flexion/extension,the shoulder internal/external rotation,the shoulder adduction/abduction,the elbow flexion/extension,the wrist supination/pronation,the wrist flexion/extension,the wrist radial/ulnar deviation,the hip flexion/extension,the hip internal/external rotation,the hip adduction/abduction,the knee flexion/extension,the ankle dorsiflexion/plantarflexion,the ankle adduction/abduction,the ankle inversion/eversion,the waist flexion/extension,the waist left/right rotation,and the waist left/right flexion.The reconfigurable mechanism was designed with fully electric adjuster and reconfigurable adaptors deployed on the driving unit,and six training modes were developed,namely,continuous passive motion,active exercise,passive–active exercise,isotonic exercise,isometric exercise and isokinetic exercise.Experiments with knee joint and elbow joint have shown that the developed reconfigurable muscle strength training robot can realize the multi-mode trainings for the 17 joint movements.
文摘The thesis analyzed the internal mechanism of technique formation of all kinds of dance action in sports dance, and its movement technical features mainly presented in five aspects： First, the control technology to maintain the correct posture; Second, fast and rhythmic bouncing technique of the body weight; Third, the parabolic shape and spiral motion technology of the body center of gravity; Four, strong wiggler technology of hip, waist and abdomen; Five, the rhythm techniques of chest, back, shoulders and arms. Aiming at the technical features for sports dance project, we can summarize the methods and means of training control force, speed strength, strength endurance and relative strength of sports dancing athletes and raise several important principles that should be followed.
文摘Obesity has a complex multifactorial etiology and is characterized by excessive accumulation of adipose tissue.Visceral adipose tissue has deleterious effects on health because it secretes large amounts of inflammatory cytokines.Nutritional calorie restriction associated with strength training may be useful in managing chronic systemic inflammation.This study aimed to evaluate the acute effect of a single strength-training session on plasma adipokine levels in sedentary,overweight,and obese young men.This study included twelve men(Age:[34.95±9.77]years;Height:[174.16±3.66]centimeter[cm];Weight:[97.83±12.87]kilogram(kg);body mass index[BMI]:[32.30±4.51]kg/m2),who performed a single strength training session.The strength training protocol consisted of 4 sets of 12 repetitions in the following six exercises,45°leg press,bench press,leg extension,machine row,leg curl,and shoulder press.Blood samples were collected before,immediately after,and 1-h subsequent after strength training.The plasma levels of resistin and leptin were measured.A significant decrease in resistin levels were found 1 h after the strength training session if compared to levels before the training session(pre-[before][2390±1199]picograms per milliliter[pg/mL]vs post-1 h[1-h subsequent][1523±798],6 pg/mL,p=0.0028).The plasma leptin levels did not differ at any time point.In conclusion,a very well controlled single session of strength training significantly decreased the plasma levels of resistin without altering the concentration of leptin in overweight and obese individuals.This effect,at least in part,supports the benefits of exercise by reducing the low grade inflammation and insulin resistance in obesity.
文摘Muscle deconditioning due to hospitalisation is problematic, causing delayed discharges, more nursing, carer, or social service support following discharge, and possible discharge to a care home rather than the patient’s own home. Muscle deconditioning is associated with increased mortality, infections, depression, and reductions in patient mobility and ability to engage in their activities of daily living. Preserving muscle strength and function should form part of patients’ rehabilitation plans. Progressive resistance training (PRE) offers the most cost-effective way of preserving muscle strength and function;however, it is not routinely carried out in hospitals. A leg strengthening device (the S-Press) has been developed with the aim of improving access to effective PRE for adults. Using a qualitative approach, thematic analysis of interviews with physiotherapists, patients, and relative carers about their experience of using the S-Press provided insight into integrating PRE into patients’ rehabilitation, what promoted or prevented its use, and the outcomes associated with its use. Four overall themes emerged from the data. “Experience of Users” described that the S-Press was accessible, convenient, time efficient, portable, and manoeuvrable, and it provided an objective measure of progress. “Facilitators” included findings around how the S-Press was easy to use, motivational, and comfortable when in use. “Barriers” comprised the inability of some patients to use the S-Press independently and the identification of obstacles that prevented consistent use. “Impact and Benefits” represented the perceptions of increased leg strength and psychological benefits. The S-Press is beneficial for patients’ rehabilitation by offering PRE that is simple and easy to use, acceptable to both patients and professionals, and can be integrated as part of patients’ rehabilitation plans.
文摘Planning training programs for strength-power track and field athletes require an understanding of both training principles and training theory. The training principles are overload, variation, and specificity. Each of these principles must be incorporated into an appropriate system of training. Conceptually, periodization embraces training principles and offers advantages in planning, allowing for logical integration and manipulation of training variables such as exercise selection, intensification, and volume factors. The adaptation and progress of the athlete is to a large extent directly related to the ability of the coach/athlete to create and carry an efficient and efficacious training process. This ability includes： an understanding of how exercises affect physiological and performance adaptation （i.e., maximum force, rate of force development, power, etc.）, how to optimize transfer of training effect ensuring that training exercises have maximum potential for carryover to performance, and how to implement programs with variations at appropriate levels （macro, meso, and micro） such that fatigue management is enhanced and performance progress is optimized.
基金supported by the Minas Gerais State University (UEMG/Brazil)a Research Productivity Scholarship Program (UEMG-PQ08/2021)+1 种基金a doctorate scholarship from the National Council of Technological and Scientific Development (CNPq/Brazil-Process140473/2020-3)a doctorate scholarship fromthe Coordination of Improvement of Higher Education Personnel (CAPES/Brazil-Code 001)。
文摘Purpose:This meta-analytical study aimed to explore the effects of resistance training(RT) volume on body adiposity,metabolic risk,and inflammation in postmenopausal and older females.Methods:A systematic search was performed for randomized controlled trials in PubMed,Scopus,Web of Science,and SciELO.Randomized controlled trials with postmenopausal and older females that compared RT effects on body adiposity,metabolic risk,and inflammation with a control group(CG) were included.Independent reviewers selected the studies,extracted the data,and performed the risk of bias and certainty of the evidence(Grading of Recommendations,Assessment,Development,and Evaluation(GRADE)) evaluations.Total body and abdominal adiposity,blood lipids,glucose,and C-reactive protein were included for meta-analysis.A random-effects model,standardized mean difference(Hedges’ g),and 95% confidence interval(95%CI) were used for meta-analysis.Results:Twenty randomized controlled trials(overall risk of bias:some concerns;GRADE:low to very low) with overweight/obese postmenopausal and older females were included.RT groups were divided into low-volume RT(LVRT,~44 sets/week) and high-volume RT(HVRT,~77 sets/week).Both RT groups presented improved body adiposity,metabolic risk,and inflammation when compared to CG.However,HVRT demonstrated higher effect sizes than LVRT for glucose(HVRT=-1.19;95%CI:-1.63 to-0.74;LVRT=-0.78;95%CI:-1.15 to-0.41) and C-reactive protein(HVRT=-1.00;95%CI:-1.32 to-0.67;LVRT=-0.34;95%CI,-0.63 to-0.04)) when compared to CG.Conclusion:Compared to CG,HVRT protocols elicit greater improvements in metabolic risk and inflammation outcomes than LVRT in overweight/obese postmenopausal and older females.
基金supported by the Key Project of the National Social Science Foundation of China (No.18ATY008)
文摘Purpose This study aimed to describe the national prevalence of Chinese children and adolescents who met the World Health Organization muscle-strengthening exercise(MSE)recommendations and identify correlates of meeting the MSE recommendations.Methods Cross-sectional data from the 2019 Physical Activity and Fitness in China—The Youth Study,a nationally representative sample of Chinese children and adolescents(n=80,413;mean age=13.7 years;53.9%girls)and their parents,were analyzed.Children and adolescents who reported engaging≥3 days(up to 7 days)of MSE per week were classified as meeting the MSE recommendations.MSE,demographics,lifestyle behaviors(sport participation,moderate-to-vigorous physical activity,screen time,and sleep duration),exercise intention,peer and parental support,and parental MSE participation were assessed through self-reports.Logistic regression models were used to determine the correlates of meeting the MSE recommendations.The analyses were completed in 2020.Results Overall,39.3%of children and adolescents met the MSE recommendations.Girls,10th-12th graders,minorities,those from lower income households and those from families with lower parental education were less likely to meet the MSE recommendations.Children and adolescents who were proficient in≥2 sports were more likely to meet the MSE recommendations(adjusted odds ratio(aOR)=1.44,95%confidence interval(95%CI):1.26-1.65),as were those with more moderate-to-vigorous physical activity(aOR=1.57,95%CI:1.53-1.61).Additionally,children and adolescents with high exercise intention(aOR=1.60,95%CI:1.51-1.69),those whose parents met the adult MSE recommendations(aOR=1.46,95%CI:1.40-1.52),and those who received high peer(aOR=1.27,95%CI:1.20-1.34)and parental support(aOR=1.07,95%CI:1.04-1.12)were more likely to meet the MSE recommendations.Conclusion Less than two-fifths of Chinese children and adolescents met the World Health Organization MSE recommendations.The correlates identified in our study can help inform the development of school and community based strategies and policies to enhance participation in MSE and improve muscular fitness of all Chinese children and adolescents.
文摘BACKGROUND Chronic heart failure(CHF)is a complex syndrome characterized by a progressive reduction of the left ventricular(LV)contractility,low exercise tolerance,and increased mortality and morbidity.Diastolic dysfunction(DD)of the LV,is a keystone in the pathophysiology of CHF and plays a major role in the progression of most cardiac diseases.Also,it is well estimated that exercise training induces several beneficial effects on patients with CHF.AIM To evaluate the impact of a cardiac rehabilitation program on the DD and LV ejection fraction(EF)in patients with CHF.METHODS Thirty-two stable patients with CHF(age:56±10 years,EF:32%±8%,88%men)participated in an exercise rehabilitation program.They were randomly assigned to aerobic exercise(AER)or combined aerobic and strength training(COM),based on age and peak oxygen uptake,as stratified randomization criteria.Before and after the program,they underwent a symptom-limited maximal cardiopulmonary exercise testing(CPET)and serial echocardiography evaluation to evaluate peak oxygen uptake(VO2peak),peak workload(Wpeak),DD grade,right ventricular systolic pressure(RVSP),and EF.RESULTS The whole cohort improved VO2peak,and Wpeak,as well as DD grade(P<0.05).Overall,9 patients(28.1%)improved DD grade,while 23(71.9%)remained at the same DD grade;this was a significant difference,considering DD grade at baseline(P<0.05).In addition,the whole cohort improved RVSP and EF(P<0.05).Not any between-group differences were observed in the variables assessed(P>0.05).CONCLUSION Exercise rehabilitation improves indices of diastolic and systolic dysfunction.Exercise protocol was not observed to affect outcomes.These results need to be further investigated in larger samples.
文摘Background: Although handgrip strength is a biomarker for morbidity/mor-tality, there is lack of evidence on the effects of resistance training on handgrip strength in healthy adults of all ages. Objective: The aim of this systematic review was to assess the impact of resistance training on handgrip strength in healthy adults. Methods: Five databases/search engines were searched. Studies comparing different types of resistance exercise interventions versus a non-exercised control group on handgrip strength were included. The available data did not allow us to conduct the pre-planned meta-analyses;therefore, only descriptive statistics were performed to summarize the data. Results: Twenty studies (17 randomized and three non-randomized controlled trials) were included, most of which were conducted in older adults. Twelve studies reported no significant difference in the change in handgrip strength between the resistance training and control groups. Two studies showed increases in handgrip strength in the resistance training group compared with the control group. Other studies included results for multi-training groups or left/right hands and found increasing handgrip strength compared to controls, but only in one training group or one hand. Overall, the randomized and non-ran-domized clinical trials presented moderate risk of bias. Conclusions: Due to the lack of low risk-of-bias randomized controlled trials of young and middle-aged adults, different training protocols, and small sample sizes, the existing evidence appears insufficient to support resistance training for increasing handgrip strength in healthy adults. Future studies may seek to discern the optimal way to develop and employ resistance training to improve hand-grip strength.
文摘Background:The training program promoted improvements of jump abilities throughout the musculoskeletal system including bone markers.The aim of this study is to examine both the acute and chronic response of bone markers to resistance training program.Methods:Ten female students(age:18±0.7 years,body mass:63±3.6 kg;height:164±5.2 cm)participated in this study.They were recruited for a back-squat training program for 12 weeks,two days/week.The full-back squat protocol consisted of 3–5 sets×3–8 repetitions at 45–55%one repetition maximum.Testing sessions included a 5 jump test(5JT),standing long jump(SLJ),drop jump(DJ),and vertical jump(VJ).Results:Substantial improvements in all testing jumps(5JT:∆10%;P=0.000;ES=1.72;SLJ:∆7%;P=0.000;ES=1.33;DJ:∆11%;P=0.000;ES=0.72;VJ:∆20%;P=0.000;ES=1.84)were found during post program in comparison to pre-program results.Moreover,a significant change(P≤0.05)of bone markers during post-exercise compared to pre-exercise either before or after the training program.Only collagen type I carboxy-terminal peptide(CICP)levels elevated after the training program(pre-exercise only)compared to former levels.Conclusion:12 weeks of back-squat training program resulted greater acute improvements of jump abilities with adaptation in all musculoskeletal system including bone formation.
文摘There is a recent and growing interest in assessing differential responders to resistance training(RT)for diverse outcomes.Thus,the individual ability to respond to an intervention for a specific measurement,called responsiveness,remains to be better understood.Thus,the current study aimed to summarize the available information about the effects of RT on functional performance and muscle strength,power,and size in healthy adults,through the prevalence rate in different responsiveness classifications models.A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA)and was registered at the International Prospective Register of Systematic Reviews(PROSPERO,CRD42021265378).PubMed/MEDLINE,Scopus,and Embase databases were systematically searched in October 2023.A total of 13 studies were included,totaling 921 subjects.Only two studies presented a low risk of bias.Regarding the effectiveness of RT,the prevalence rate for non-responders ranged from 0%to 44%for muscle strength,from 0%to 84%for muscle size,and from 0%to 42%for functional performance,while for muscle power,the only study found showed a responsiveness rate of 37%.In conclusion,a wide range of differential responders is described for all variables investigated.However,the evidence summarized in this systematic review suggested some caution while interpreting the findings,since the body of evidence found seems to be incipient,and widely heterogeneous in methodological and statistical aspects.
文摘Throughout history,cultural norms and stereotypes have discouraged resistance training in women.Today,as awareness and acceptance of resistance training in women has grown,supported by scientific research and advocacy,more women are achieving health and performance benefits from resistance training.This narrative review discusses the current scientific literature on sexual dimorphisms,the mechanisms underlying health and performance adaptations of resistance training in women,with implications for program design.In general,the physiological adaptations to resistance training in women are mediated largely by the neuroendocrine and immune systems,similar to in men albeit via some distinct predominant pathways involving sex hormones estrogen,testosterone,growth hormone(GH),and insulin-like growth factor-I(IGF-I).As a result,women may have unique adaptations in terms of muscle hypertrophy,substrate utilization,fatiguability,and recovery.Despite subtle physiological differences,women achieve measurable increases in strength,power and athletic performance via engaging in resistance training programs of sufficient frequency,intensity,and duration.Moreover,beyond performance,resistance training has a favorable impact on women’s health including metabolic health,body composition,bone health,cardiovascular health,mental health,self-esteem,and body image.Resistance training recommendations for men and women are highly similar and goal-dependent,with some specific caveats that need to be addressed in women.As resistance training has become regarded as a key element of programs for achieving performance and health improvements in women,additional research may further our understanding.
文摘Purpose The aim of this review was to collect data on physical exercise programs in patients with HNC and to analyze the compliance with the Frecuency,Intensity,Time and Type(FITT)and progressive overload principles.Methods The search strategy identified 1318 articles through February 2022.After deduplication,title and abstract review,and full-text review,15 studies met all the inclusion criteria.The inclusion criteria were randomized controlled trials(RCTs)with interventions involving at least 10 patients,and the intervention protocol included,at least,programmed strength exercise.Results Physical exercise programs were performed only during and after treatment,with durations varying from 6 to 12 weeks.Only 5 studies(33.3%)detailed all the characteristics concerning FITT and progressive overload principles.In addition,10 trials measured the changes in body composition and physical function.In contrast,6 studies included nutritional recommendations or follow-up.Conclusion It has been proven that physical exercise programs may help people with head and neck cancer improve their body composition,strength,and quality of life.To examine the dose/response effects of physical activity more precisely,further information regarding FITT principles and the progression of the load undertaken in the treatments is required.Finally,it is necessary to investigate the optimal time to start a physical exercise program and its impact on survival.
