Objectives To investigate relationship between iron deficiency of different degrees and physical performance and habitual activity of migrant schoolchildren at the age of 11-14 years. Methods Ninety one randomly selec...Objectives To investigate relationship between iron deficiency of different degrees and physical performance and habitual activity of migrant schoolchildren at the age of 11-14 years. Methods Ninety one randomly selected schoolchildren were divided into three groups according to their iron status. Iron status including hemoglobin （Hb）, serum ferritin （SF）, serum iron （SI） and sTfR was determined. Physical performance tests included maximum oxygen consumption （VO2max） and maximum work time. Energy expenditure （EE） and daily physical activity were estimated by recording 24-h heart rate （HR）. Dietary intake was assessed with frequency questionnaires, and physical activity level was estimated with frequency and physical activity questionnaires. Results Severe iron deficiency （IDA） impaired the aerobic capacity and habitual physical activity. When fat-free mass （FFM） was considered, VO2max （VO2max/FFM） was significantly lower in the iron-marginal group than in the iron-adequate groups among girls （P=0.02）, but such a deference was not found among boys （P=0.28）. Aerobic activity and EE at leisure were significantly lower in the severe iron deficient group than in the marginal iron deficient and iron adequate groups. Net HR at leisure time was correlated with lib, log SF, body weight, and FFM （P〈0.05）. Conclusion The functional effect of iron deficiency on physical performance and habitual physical activity rely on the degree of current iron deficiency. Severe iron deficiency significantly impairs both aerobic capacity and habitual physical activity. Iron-marginal deficiency impairs VO2max/FFM in girls, rather than in boys.展开更多
Background: Regular physical activity(PA) has documented effects in prevention and treatment of many non-communicable diseases(NCDs).Physical inactivity is recognized as the fourth leading risk factor for premature de...Background: Regular physical activity(PA) has documented effects in prevention and treatment of many non-communicable diseases(NCDs).Physical inactivity is recognized as the fourth leading risk factor for premature death, worldwide. Despite these facts, physical inactivity is increasing,not only in high-income, but also in middle-and low-income countries. To address this negative trend, evidence-based methods to increase PA are needed. The purpose of this paper is to describe the implementation and assessment of 4 strategies designed to increase PA in Vietnam.Methods: Four strategies were used: i) introduction and evaluation of an education and training program on the Swedish method of Physical Activity on Prescription(PAP) among health care professionals, ii) translation of the PAP evidence-based handbook, Physical Activity in the Prevention and Treatment of Disease(called FYSS in Swedish) into Vietnamese, iii) launch of a mass-media campaign to promote PA, and iv)advocacy to support development of PA guidelines in Vietnam.Results: The evaluation indicated that the participating health care professionals had a positive attitude to PAP. However, they also reported uncertainty in prescribing PA. FYSS was translated and disseminated successfully to health care professionals. A mass-media campaign identified the beneficial effects of PA to health care professionals, journalists, policy makers, and the public. Last, the process of developing national guidelines on PA was initiated.Conclusion: This project led to enhanced awareness and appreciation of PA in the prevention and treatment of NCDs among health care professionals as well as initiation of national PA guidelines. Important lessons also were learned in the presentation of PAP, which will be considered when designing similar projects in the future.展开更多
基金funded by the Global Alliance for Improved Nutrition, NFA-CHN-FE-2003-01-00
文摘Objectives To investigate relationship between iron deficiency of different degrees and physical performance and habitual activity of migrant schoolchildren at the age of 11-14 years. Methods Ninety one randomly selected schoolchildren were divided into three groups according to their iron status. Iron status including hemoglobin （Hb）, serum ferritin （SF）, serum iron （SI） and sTfR was determined. Physical performance tests included maximum oxygen consumption （VO2max） and maximum work time. Energy expenditure （EE） and daily physical activity were estimated by recording 24-h heart rate （HR）. Dietary intake was assessed with frequency questionnaires, and physical activity level was estimated with frequency and physical activity questionnaires. Results Severe iron deficiency （IDA） impaired the aerobic capacity and habitual physical activity. When fat-free mass （FFM） was considered, VO2max （VO2max/FFM） was significantly lower in the iron-marginal group than in the iron-adequate groups among girls （P=0.02）, but such a deference was not found among boys （P=0.28）. Aerobic activity and EE at leisure were significantly lower in the severe iron deficient group than in the marginal iron deficient and iron adequate groups. Net HR at leisure time was correlated with lib, log SF, body weight, and FFM （P〈0.05）. Conclusion The functional effect of iron deficiency on physical performance and habitual physical activity rely on the degree of current iron deficiency. Severe iron deficiency significantly impairs both aerobic capacity and habitual physical activity. Iron-marginal deficiency impairs VO2max/FFM in girls, rather than in boys.
基金funded by the Swedish International Development Cooperation Agency (Sida), Department for Development Partnership (No. AKT-2010-045)
文摘Background: Regular physical activity(PA) has documented effects in prevention and treatment of many non-communicable diseases(NCDs).Physical inactivity is recognized as the fourth leading risk factor for premature death, worldwide. Despite these facts, physical inactivity is increasing,not only in high-income, but also in middle-and low-income countries. To address this negative trend, evidence-based methods to increase PA are needed. The purpose of this paper is to describe the implementation and assessment of 4 strategies designed to increase PA in Vietnam.Methods: Four strategies were used: i) introduction and evaluation of an education and training program on the Swedish method of Physical Activity on Prescription(PAP) among health care professionals, ii) translation of the PAP evidence-based handbook, Physical Activity in the Prevention and Treatment of Disease(called FYSS in Swedish) into Vietnamese, iii) launch of a mass-media campaign to promote PA, and iv)advocacy to support development of PA guidelines in Vietnam.Results: The evaluation indicated that the participating health care professionals had a positive attitude to PAP. However, they also reported uncertainty in prescribing PA. FYSS was translated and disseminated successfully to health care professionals. A mass-media campaign identified the beneficial effects of PA to health care professionals, journalists, policy makers, and the public. Last, the process of developing national guidelines on PA was initiated.Conclusion: This project led to enhanced awareness and appreciation of PA in the prevention and treatment of NCDs among health care professionals as well as initiation of national PA guidelines. Important lessons also were learned in the presentation of PAP, which will be considered when designing similar projects in the future.
