Thompson J L, Manore M M, Skinner J S, Ravussin E, Spraul M
Exercise and Sport Research Institute, Arizona State University, Tempe 85287, USA.
Med Sci Sports Exerc. 1995 Mar;27(3):347-54.
The 24-h energy expenditure (24-h EE), resting EE (REE), sleeping EE (SEE), and spontaneous physical activity (SPA) were compared between six male endurance athletes whose reported energy intake was low (LOW) and did not match that theoretically required for weight maintenance and four whose reported energy intake appeared adequate (ADQ) and matched their estimated EE. Groups did not differ in age, body weight, fat-free mass, and daily EE estimated from activity records. The LOW athletes reported an energy intake 6338 +/- 2164 kJ.d-1 less than estimated EE. The 24-h EE, REE, SEE, and SPA of the LOW athletes were significantly lower than the ADQ athletes (862, 523, 770 kJ.d-1, and 43 min.d-1, respectively). Using all subjects, there was a significant positive correlation between REE and free thyroxine (FT4) (r = 0.82) and SEE and FT4 (r = 0.66). Thus, part of the LOW athlete's ability to maintain body weight on a seemingly low energy intake appears due to a lower daily sedentary EE.
对六名报告能量摄入量较低（LOW）且与理论上维持体重所需能量不匹配的男性耐力运动员和四名报告能量摄入量充足（ADQ）且与估计能量消耗相匹配的男性耐力运动员的24小时能量消耗（24-h EE）、静息能量消耗（REE）、睡眠能量消耗（SEE）和自发身体活动（SPA）进行了比较。两组在年龄、体重、去脂体重以及根据活动记录估计的每日能量消耗方面没有差异。LOW组运动员报告的能量摄入量比估计的能量消耗少6338±2164 kJ·d⁻¹。LOW组运动员的24-h EE、REE、SEE和SPA显著低于ADQ组运动员（分别低862、523、770 kJ·d⁻¹和43分钟·d⁻¹）。在所有受试者中，REE与游离甲状腺素（FT4）之间存在显著正相关（r = 0.82），SEE与FT4之间也存在显著正相关（r = 0.66）。因此，LOW组运动员在看似低能量摄入的情况下维持体重的部分能力似乎归因于较低的每日久坐能量消耗。
