Poehlman E T, LaChance P, Tremblay A, Nadeau A, Dussault J, Thériault G, Després J P, Bouchard C
Endocrinology, Metabolism, and Nutrition, College of Medicine, University of Vermont, Burlington 05405.
Can J Physiol Pharmacol. 1989 Jan;67(1):10-6. doi: 10.1139/y89-003.
The purposes of this study were to examine (a) the effects of acute exercise on metabolic rate 24 and 48 h postexercise and (b) the interaction of acute exercise and the thermic effect of caffeine on metabolic rate and hormonal changes during the late postexercise recovery period. In six young males, who were regular consumers of caffeine, resting energy expenditure was measured before and after caffeine (5 mg.kg-1) and placebo ingestion under the following conditions: (i) control (e.g., no prior exercise), (ii) 24 h postexercise, and (iii) 48 h postexercise. Blood samples were drawn for plasma glucose, insulin, glycerol, free fatty acids, catecholamines, and thyroid hormones (triiodothyronine, thyroxine, and free thyroxine). Results showed that acute exercise did not exert a detectable effect on resting metabolic rate in the late postexercise recovery period, that is, resting metabolic rate was similar among the conditions of control (1.17 +/- 0.12 kcal.min-1), 24 h postexercise (1.16 +/- 0.12), and 48 h postexercise (1.16 +/- 0.11). Caffeine ingestion increased metabolic rate (approximately 7%), but the thermic effect was not different among the experimental conditions. Plasma insulin and norepinephrine were lower after caffeine ingestion, whereas an increase in plasma free fatty acids was noted. Other hormones and substrates did not change significantly in response to caffeine ingestion. Furthermore, the hormonal and substrate milieu was not significantly different 24 and 48 h postexercise when compared with the control condition. Our results support the view that acute exercise does not alter the resting metabolic rate in the late postexercise recovery period.(ABSTRACT TRUNCATED AT 250 WORDS)
(a) 急性运动对运动后24小时和48小时代谢率的影响；(b) 急性运动与咖啡因热效应在运动后恢复后期对代谢率和激素变化的相互作用。在六名经常摄入咖啡因的年轻男性中，在以下条件下测量了咖啡因（5毫克/千克）和安慰剂摄入前后的静息能量消耗：(i) 对照（如无先前运动），(ii) 运动后24小时，(iii) 运动后48小时。采集血样检测血浆葡萄糖、胰岛素、甘油、游离脂肪酸、儿茶酚胺和甲状腺激素（三碘甲状腺原氨酸、甲状腺素和游离甲状腺素）。结果显示，急性运动在运动后恢复后期对静息代谢率没有可检测到的影响，即对照条件（1.17±0.12千卡/分钟）、运动后24小时（1.16±0.12）和运动后48小时（1.16±0.11）的静息代谢率相似。摄入咖啡因可提高代谢率（约7%），但热效应在各实验条件下并无差异。摄入咖啡因后血浆胰岛素和去甲肾上腺素降低，而血浆游离脂肪酸增加。其他激素和底物对咖啡因摄入无显著变化。此外，与对照条件相比，运动后24小时和48小时的激素和底物环境无显著差异。我们的结果支持这样的观点，即急性运动在运动后恢复后期不会改变静息代谢率。（摘要截断于250字）
