School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK.
Appetite. 2012 Jun;58(3):946-54. doi: 10.1016/j.appet.2012.02.041. Epub 2012 Feb 23.
This study investigated the effect of fasted and postprandial exercise on appetite, energy intake and resting metabolic responses. Twelve healthy males (mean±SD: age 23±3 years, body mass index 22.9±2.1 kg m(-2), maximum oxygen uptake 57.5±9.7 mL kg(-1) min(-1)) performed three 10 h experimental trials (control, fasted exercise and postprandial exercise) in a Latin Square design. Trials commenced at 8 am after an overnight fast. Sixty min of treadmill running at ∼70% of maximum oxygen uptake was performed at 0-1 h in the fasted exercise trial and 4-5 h in the postprandial exercise trial. A standardised breakfast was provided at 1.5 h and ad libitum buffet meals at 5.5 and 9.5 h. Appetite ratings and resting expired air samples were collected throughout each trial. Postprandial exercise suppressed appetite to a greater extent than fasted exercise. Ad libitum energy intake was not different between trials, resulting in a negative energy balance in exercise trials relative to control after accounting for differences in energy expenditure (control: 9774±2694 kJ; fasted exercise: 6481±2318 kJ; postprandial exercise: 6017±3050 kJ). These findings suggest that 60 min treadmill running induces a negative daily energy balance relative to a sedentary day but is no more effective when performed before or after breakfast.
这项研究调查了空腹和餐后运动对食欲、能量摄入和静息代谢反应的影响。12 名健康男性（平均±标准差：年龄 23±3 岁，体重指数 22.9±2.1kg/m²，最大摄氧量 57.5±9.7mL/kg/min）以拉丁方设计进行了三项 10 小时的实验试验（对照、空腹运动和餐后运动）。试验于清晨 8 点开始，在禁食一夜后进行。在空腹运动试验中，0-1 小时内进行 60 分钟的跑步机跑步，速度约为最大摄氧量的 70%，在餐后运动试验中，4-5 小时内进行。在 1.5 小时时提供标准早餐，在 5.5 小时和 9.5 小时时提供自助餐。在每个试验中收集食欲评分和休息时呼出的空气样本。与空腹运动相比，餐后运动更能抑制食欲。由于运动试验中能量消耗的差异，摄入的能量与对照试验不同，因此在计算能量消耗后，运动试验相对于对照试验处于负平衡状态（对照试验：9774±2694kJ；空腹运动试验：6481±2318kJ；餐后运动试验：6017±3050kJ）。这些发现表明，60 分钟的跑步机跑步相对于久坐不动的一天会导致每日能量负平衡，但在早餐前或早餐后进行时并没有更有效。
