Abstract：
Limited evidence is available about the variability of appetitive responses within individuals after an acute bout of exercise. The present study aimed to assess the consistency and individual variability of post-exercise appetitive responses in healthy individuals. Twenty participants (10 females, 23.9 ± 4.1 years, 22.5 ± 2.0 kg m-2) joined the laboratory to perform four sessions separated by a minimum of 5 days: i) a control session with a rest period before and an ad libitum lunch (REST), and ii) three identical exercise sessions (EX) with a 30-min moderate-intensity (60-70% of predicted maximal heart rate) walking bout ending 25 min before the ad libitum lunch. Subjective appetite sensations were assessed before and after the meal at regular intervals, and satiety quotients were calculated. Food reward was assessed by the Leeds Food Preference Questionnaire before and after lunch. For each EX session, the difference with the REST session was calculated (Δ = EX - REST). Energy and macronutrient intake were consistent in response to exercise (all intraclass correlation coefficients (ICC) > 0.8) while results showed that post-exercise subjective appetite sensations and satiety quotients varied across the three EX sessions (almost all ICC < 0.7). Food reward was overall consistent in response to exercise before the test meal but not after. When considering the changes (Δ), the results showed no or poor consistency for most of the appetitive outcomes. To conclude, energy and macronutrient intake, as well as pre-meal food reward, are consistent after exercise in healthy individuals, while subjective appetite sensations are not stable within individuals across the sessions. Regarding the variations from REST to EX sessions, the results suggest that the individual changes observed are only random day-to-day variations.
摘要：
关于急性运动后个体食欲反应的变异性的证据有限。本研究旨在评估健康个体运动后食欲反应的一致性和个体差异。20名参与者（10名女性，23.9±4.1年，22.5±2.0kg。m-2）加入实验室，以至少5天的间隔进行四个会话：i）控制会话，休息前和随意午餐（REST），和ii）三个相同的运动课程（EX），30分钟的中等强度（预测最大心率的60-70％）步行比赛在随意午餐前25分钟结束。定期在餐前和餐后评估主观食欲感觉，计算饱腹度商数。午餐前后通过利兹食物偏好问卷评估食物奖励。对于每个EX会话，计算与REST会话的差异(Δ=EX-REST)。能量和大量营养素的摄入对运动的反应是一致的（所有组内相关系数（ICC）>0.8），而结果表明，运动后的主观食欲感觉和饱腹感商在三个EX疗程中有所不同（几乎所有ICC<0.7）。食物奖励在测试餐前但之后对运动的反应总体上是一致的。当考虑变化(Δ)时，结果显示大多数食欲结局无一致性或一致性较差.最后，能量和大量营养素的摄入，以及餐前食物奖励，在健康个体运动后是一致的，而主观食欲感觉在整个会话中的个体内部并不稳定。关于从REST到EX会话的变化，结果表明,观察到的个体变化只是随机的日常变化.
