Oshima Satomi, Miyauchi Sakiho, Kawano Hiroshi, Ishijima Toshimichi, Asaka Meiko, Taguchi Motoko, Torii Suguru, Higuchi Mitsuru
Graduate School of Sport Sciences, Waseda University, Saitama, Japan.
J Nutr Sci Vitaminol (Tokyo). 2011;57(6):394-400. doi: 10.3177/jnsv.57.394.
The fat-free mass (FFM) of athletes is typically large, and thus the FFM is often utilized to estimate their resting energy expenditure (REE). While the proportional contribution of organ-tissues to the total influence of FFM on REE is known for untrained individuals and female athletes, the extent to which this is valid for male athletes is unclear. The purpose of this study was to clarify the contribution of the components of FFM to REE in male athletes. Fifty-seven male athletes participated in this study. REE was assessed by indirect calorimetry and body composition by dual X-ray absorptiometry. The athletes were equally divided into three groups based on FFM: Small (S), Medium (M), and Large (L). When measured REE (REEm) was compared with REE estimated (REEe) based on the four organ-tissue compartments with set metabolic rates, REEm and REEe had a strong association (r=0.76, p<0.001). In addition, the absolute value of total REE became larger in accordance with body size (S: 1,643±144, M: 1,865±140, and L: 2,060±156 kcal/d) accompanied by increases in mass of all four organ-tissue compartments as body size increased. The consistency of REE/FFM in male athletes in spite of the difference in body size can be explained by the steadiness among the three groups of the relative contribution of each organ-tissue compartment to the FFM. Based on these results, the FFM is the major determinant of REE regardless of body size in male athletes.
运动员的去脂体重（FFM）通常较大，因此常利用FFM来估算他们的静息能量消耗（REE）。虽然对于未经训练的个体和女性运动员，器官组织对FFM对REE总影响的比例贡献是已知的，但这对男性运动员的有效性程度尚不清楚。本研究的目的是阐明FFM各组成部分对男性运动员REE的贡献。57名男性运动员参与了本研究。通过间接测热法评估REE，通过双能X线吸收法评估身体成分。根据FFM将运动员平均分为三组：小（S）、中（M）和大（L）。当将测量的REE（REEm）与基于设定代谢率的四个器官组织部分估算的REE（REEe）进行比较时，REEm和REEe具有很强的相关性（r = 0.76，p < 0.001）。此外，随着体型增大，所有四个器官组织部分的质量增加，总REE的绝对值也随之增大（S组：1643±144，M组：1865±140，L组：2060±156千卡/天）。尽管体型不同，但男性运动员REE/FFM的一致性可以通过各器官组织部分对FFM的相对贡献在三组之间的稳定性来解释。基于这些结果，无论体型如何，FFM都是男性运动员REE的主要决定因素。
