Van Praagh Emmanuel, Fellmann Nicole, Bedu Mario, Falgairette Guy, Coudert Jean
Laboratoire de Physiologie du Sport, U.F.R. Staps, Universitè B. Pascal, B.P. 104, 63172-Aubière, Cedex, France.
Laboratoire de Physiologie, Faculté de Médecine, Université de Clermont I, B.P. 38, 63001-Clermont-Fd, France.
Pediatr Exerc Sci. 1990 Nov;2(4):336-348. doi: 10.1123/pes.2.4.336.
This study was done to determine the extent to which body composition accounts for differences in anaerobic characteristics between 12-year-old girls and boys. Peak leg power (PP), mean leg power (MP), percent body fat, fat free mass (FFM), and lean thigh volume (LTV) were determined by various tests. Pubertal stages and salivary testosterone concentration (in boys) were used to assess sexual maturation. Laboratory anaerobic indices were compared with performances in two running tests. Blood samples were taken for lactate determination. Absolute PP and MP outputs were similar in both sexes and were better correlated with LTV in girls, whereas in boys both PP and MP were highly correlated with FFM. Although nonsignificant gender difference in lean tissue was observed, PP and MP when corrected for LTV were significantly greater in boys than in girls. Factors other than the amount of lean muscle mass should be considered in explaining the gender differences in PP and MP in early pubertal children.
本研究旨在确定身体成分在多大程度上解释了12岁女孩和男孩无氧代谢特征的差异。通过各种测试测定了峰值腿部力量（PP）、平均腿部力量（MP）、体脂百分比、去脂体重（FFM）和瘦大腿体积（LTV）。采用青春期阶段和唾液睾酮浓度（男孩）来评估性成熟度。将实验室无氧指标与两项跑步测试中的表现进行比较。采集血样测定乳酸。男女的绝对PP和MP输出相似，且在女孩中与LTV的相关性更好，而在男孩中PP和MP均与FFM高度相关。尽管在瘦组织方面观察到无显著性别差异，但校正LTV后的PP和MP在男孩中显著高于女孩。在解释青春期早期儿童PP和MP的性别差异时，应考虑除瘦肌肉量之外的其他因素。
