Scaling of maximal oxygen uptake by lower leg muscle volume in boys and men
Scaling of maximal oxygen uptake by lower leg muscle volume in boys and men
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DOI：
10.1152/japplphysiol.01213.2005
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发表时间：
2006-06-01
影响因子：
3.3
通讯作者：
Batterham, Alan M.
中科院分区：
文献类型：
--
作者：
Tolfrey, Keith;Barker, Alan;Batterham, Alan M.
男孩和男性小腿肌肉体积最大摄氧量的缩放比例。 J Appl Physiol 100: 1851 - 1856, 2006。首次发表于 2006 年 2 月 16 日； doi：10.1152/ japplpsyol。 01213.2005。 - 本研究的目的是使用体重 (BM)、估计去脂体重 (FFM) 和估计小腿肌肉体积 (Vol) 作为单独的缩放变量，严格检查体型对男孩和男性最大摄氧量 (V-O2 (max)) 的影响。对 15 名男孩和 14 名男性进行了 V-O2 max 和体内 Vol 测量评估。根据特定人群的皮褶测量结果预测身体脂肪百分比后，即可估算 FFM。通过使用非线性异速生长模型，计算了 BM、FFM 和 Vol 的常见体型指数。各个异速生长模型的大小指数（95% 置信区间）的点估计为：BM 0.79 (0.53-1.06)、FFM 1.00 (0.78-1.22) 和 Vol 0.64 (0.40-0.88)。对于男孩，观察到 V-O2（最大）/BM0.79 和 V-O2 max/FFM1.00 存在显着的残余体型相关性，表明这些变量没有正确划分体型的影响。相比之下，按 Vol(0.64) 缩放导致男孩或男性没有残余大小相关性。 BM 的缩放因身体成分的异质性以及男孩和男性之间质量指数的潜在显着差异而混淆。 FFM 被排除为涉及肌肉组织的指数，因为 Vol 并不代表男孩中 FFM 的恒定比例 [Vol alpha FFM1.45（95% 置信区间，1.13-1.77）]（与男性不同）。我们得出的结论是，体积作为所涉及肌肉质量的指标，是在身体尺寸和成分不同的男孩和男性样本中衡量最大摄氧量的最有效的异速分母。
Scaling of maximal oxygen uptake by lower leg muscle volume in boys and men. J Appl Physiol 100: 1851 - 1856, 2006. First published February 16, 2006; doi: 10.1152/ japplphysiol. 01213.2005. - The aim of this study was to critically examine the influence of body size on maximal oxygen uptake ( V-O2 (max)) in boys and men using body mass ( BM), estimated fat-free mass (FFM), and estimated lower leg muscle volume (Vol) as the separate scaling variables. V-O2 max and an in vivo measurement of Vol were assessed in 15 boys and 14 men. The FFM was estimated after percentage body fat had been predicted from population-specific skinfold measurements. By using nonlinear allometric modeling, common body size exponents for BM, FFM, and Vol were calculated. The point estimates for the size exponent ( 95% confidence interval) from the separate allometric models were: BM 0.79 ( 0.53-1.06), FFM 1.00 (0.78-1.22), and Vol 0.64 (0.40-0.88). For the boys, substantial residual size correlations were observed for V-O2 (max)/BM0.79 and V-O2 max/ FFM1.00, indicating that these variables did not correctly partition out the influence of body size. In contrast, scaling by Vol(0.64) led to no residual size correlation in boys or men. Scaling by BM is confounded by heterogeneity of body composition and potentially substantial differences in the mass exponent between boys and men. The FFM is precluded as an index of involved musculature because Vol did not represent a constant proportion of FFM [Vol alpha FFM1.45 ( 95% confidence interval, 1.13-1.77)] in the boys ( unlike the men). We conclude that Vol, as an indicator of the involved muscle mass, is the most valid allometric denominator for the scaling of V-O2 max in a sample of boys and men heterogeneous for body size and composition.