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Relationship between peak oxygen uptake and regional body composition in Japanese subjects

Journal of Sport and Health Science 2014年第3期3卷 233-238页

作者： Kanae Oda Nobuyuki Miyatake Noriko Sakano Takeshi Saito Motohiko Miyachi Izumi Tabata Takeyuki Numata Department of Hygiene Faculty of Medicine.Kagawa University Health Promotion and Exercise Program National Institute of Health and Nutrition Faculty of Sport and Health Science Ritsumeikan University Okayama Southern Institute of Health Okayama Health Foundation

Purpose： To investigate the link between peak oxygen uptake and regional body composition by dual energy X-ray absorptiometry （DEXA） in Japanese subjects. Methods： A total of 93 men （42.2 ± 12.3 years old） and 106 women （43.5 ± 12.3 years old） were enrolled in this cross-sectional investigation study. peak oxygen uptake was measured by the breath-by-breath method. Regional body composition i.e., body fat mass, lean body mass, and body fat percentage was evaluated using DEXA. In addition, metabolic risk parameters were also evaluated. Results： peak oxygen uptake was 37.6± 8.7 mL/kg/min in men and 31.1 ± 6.4 mL/kg/min in women, and decreased with age in both genders. peak oxygen uptake was significantly correlated with total body fat percentage （men： r = -0.684, p 〈 0.0001; women： r = -0.681, p 〈 0.0001）. These associations remained even after adjusting for age and total lean body mass. However, peak work rate was positively and significantly correlated with leg lean body mass. Conclusion： peak oxygen uptake was closely correlated with total body fat percentage in both genders. Aerobic exercise as well as leg resistance training might be useful for improving peak oxygen uptake in Japanese subjects. Copyright

关键词： Dual energy X-ray absorptiometry (DEXA) Japanese Leg muscle mass peak oxygen uptake Regional body composition

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The Development of Aerobic and Anaerobic Fitness with Reference to Youth Athletes

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Journal of Science in Sport and Exercise 2020年第4期2卷 275-286页

作者： Neil Armstrong Jo Welsman Children’s Health and Exercise Research Centre University of ExeterSt Lukes CampusHeavitree RoadExeter EX12LUUK

Purpose To challenge current conventions in paediatric sport science and use data from recent longitudinal studies to elu-cidate the development of aerobic and anaerobic fitness,with reference to youth ***(1)To critically review the traditional practice of ratio scaling physiological variables with body mass and,(2)to use multiplicative allometric models of longitudinal data,founded on 1053(550 from boys)determinations of 10-17-year-olds’peak oxygen uptake(VO2)and 763(405 from boys)determinations of 11-17-year-olds’peak power output(PP)and mean power output(MP),to investigate the development of aerobic and anaerobic fitness in *** The statistical assumptions underpinning ratio scaling of physiological variables in youth are seldom *** allometric modelling of longitudinal data has demonstrated that fat free mass(FFM)acting as a surrogate for active muscle mass,is the most powerful morphological influence on PP,MP,and peak *** FFM appropriately controlled for,age effects remain significant but additional,independent effects of maturity status on anaerobic and aerobic fitness are *** Ratio scaling of physiological variables with body mass is fallacious,confounds interpretation of the develop-ment of anaerobic and aerobic fitness,and misleads fitness comparisons within and across youth *** evalua-tion of the development of anaerobic and aerobic fitness in youth requires longitudinal analyses of sex-specific,concurrent changes in age-and maturation-driven morphological *** and maturation-driven changes in FFM are essential considerations when evaluating the physiological development of youth athletes.

关键词： Age Growth Maturation Multiplicative allometric modelling peak oxygen uptake peak power output

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