Clermont Auvergne University, EA 3533, Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), CRNH Auvergne, Clermont-Ferrand, France.
Unit of Biostatistics (DRCI), Clermont-Ferrand University Hospital, Clermont-Ferrand, France.
Appetite. 2024 Nov 1;202:107644. doi: 10.1016/j.appet.2024.107644. Epub 2024 Aug 20.
While an intensity-dependent post-exercise decrease in energy intake (EI) has been described in adolescents with obesity, studies invariably used ad libitum meals, limiting then any conclusions regarding the effect of exercise on post-meal appetitive responses that can be also impacted by the ad libitum nature of the meal. This study analyses appetite and food-reward related responses to a fixed meal after an acute exercise, also exploring the associations between substrate use during exercise and overall daily EI in adolescents with obesity. Thirteen adolescents with obesity (12-16 years, 5 males) randomly complete 2 experimental sessions: (i) a control condition (CON); (ii) a 30-min moderate intensity (65% VO) cycling condition (EX). Energy expenditure and substrate oxidation were measured during both 30 min of rest (CON) or exercise (EX). Ad libitum EI, macronutrient intake and relative EI were assessed at dinner, subjective appetite sensations taken at regular intervals and food reward measured before and after lunch as well as before dinner. Energy and macronutrient intake did not differ between conditions, as well as appetite feelings. A time effect (p = 0.012) was observed between pre and post meal for choice fat bias in both conditions but was only significant within the CON condition (p = 0.004). CHO oxidation during exercise was found correlated with both EI (r = 0.586, p = 0.045), pre-lunch hunger (r = 0.624, p = 0.030), daily AUC for hunger and DTE (r = 0.788, p = 0.002 and r = 0.695; p = 0.012 respectively). This exploratory study highlights that acute exercise might not affect subsequent appetite responses when using a fixed test meal in adolescents with obesity.
虽然已经描述了肥胖青少年在运动后能量摄入（EI）的强度依赖性下降，但这些研究无一例外地使用了随意进食，因此，对于运动对进食后食欲反应的影响，不能得出任何结论，而这种食欲反应也可能受到进食的随意性的影响。本研究分析了肥胖青少年在一次急性运动后对固定餐的食欲和与食物奖赏相关的反应，还探讨了运动期间底物利用与肥胖青少年的整体日常 EI 之间的相关性。13 名肥胖青少年（12-16 岁，5 名男性）随机完成 2 个实验：（i）对照条件（CON）；（ii）30 分钟中等强度（65% VO ）自行车运动条件（EX）。在休息 30 分钟（CON）或运动（EX）期间测量能量消耗和底物氧化。在晚餐时评估随意 EI、宏量营养素摄入和相对 EI，在定期间隔测量主观食欲感觉，并在午餐前、午餐后和晚餐前测量食物奖赏。在两种情况下，能量和宏量营养素摄入以及食欲感觉都没有差异。在两种情况下，都观察到餐前和餐后的时间效应（p=0.012），但仅在 CON 条件下具有统计学意义（p=0.004）。在运动期间 CHO 氧化与 EI（r=0.586，p=0.045）、午餐前饥饿（r=0.624，p=0.030）、饥饿和 DTE 的每日 AUC（r=0.788，p=0.002 和 r=0.695；p=0.012）呈正相关。这项探索性研究强调，在肥胖青少年中使用固定测试餐时，急性运动可能不会影响随后的食欲反应。
