School of Sport Science, Exercise and Health, University of Western Australia, Crawley, Western Australia, Australia.
Int J Sport Nutr Exerc Metab. 2010 Aug;20(4):350-6. doi: 10.1123/ijsnem.20.4.350.
Although the manipulation of exercise and dietary intake to achieve successful weight loss has been extensively studied, it is unclear how the time of day that exercise is performed may affect subsequent energy intake. The purpose of the current study was to investigate the effect of an acute bout of exercise performed in the morning compared with an equivalent bout of exercise performed in the afternoon on short-term energy intake. Nine healthy male participants completed 3 trials: morning exercise (AM), afternoon exercise (PM), or control (no exercise; CON) in a randomized counterbalanced design. Exercise consisted of 45 min of treadmill running at 75% VO(2peak). Energy intake was assessed over a 26-hr period with the participants eating ad libitum from a standard assortment of food items of known quantity and composition. There was no significant difference in overall energy intake (M ± SD; CON 23,505 ± 6,938 kJ, AM 24,957 ± 5,607 kJ, PM 24,560 ± 5,988 kJ; p = .590) or macronutrient preferences during the 26-hr period examined between trials. Likewise, no differences in energy intake or macronutrient preferences were observed at any of the specific individual meal periods examined (i.e., breakfast, lunch, dinner) between trials. These results suggest that the time of day that exercise is performed does not significantly affect short-term energy intake in healthy men.
虽然运动和饮食摄入的控制已被广泛研究，用以实现成功减肥，但运动时间如何影响随后的能量摄入尚不清楚。本研究的目的是调查与下午相比，在早上进行的急性运动对短期能量摄入的影响。9 名健康男性参与者以随机交叉平衡设计完成 3 次试验：晨练（AM）、下午运动（PM）或对照（无运动；CON）。运动包括 45 分钟的 75% VO 2peak 的跑步机跑步。参与者在 26 小时内自由进食，从标准的食物种类中摄入已知数量和成分的食物。在整个 26 小时的试验期间，CON（23505 ± 6938kJ）、AM（24957 ± 5607kJ）和 PM（24560 ± 5988kJ）的总能量摄入或宏量营养素偏好没有显著差异（p =.590）。同样，在任何特定的个别进餐期间（即早餐、午餐和晚餐），试验之间的能量摄入或宏量营养素偏好也没有差异。这些结果表明，运动时间不会显著影响健康男性的短期能量摄入。
