Using a novel computer-based approach to assess the acute effects of exercise on appetite-related measures

Measuring food intake using standard buffet meals can be complicated by sensory and external cues which can alter energy intake. The present study was designed to examine the effects of acute exercise on non-metabolic factors related to appetite and food intake using a computer-based assessment. Twenty-seven men and women participated in two sessions in random order: 60-min walking on the treadmill (exercise trial; EX) or seated rest (control trial; CON). Subjective hunger and fullness, food liking, food utility, and ideal portion size were assessed before and immediately after exercise or rest, and hourly for 2 h. The findings showed that an acute bout of moderate intensity exercise had an anorexigenic effect; characterised by diminished hunger (−17.4%, p = 0.004) and lower prospective ideal portion size (−7.7%, p = 0.003) compared to no exercise. This novel, computer-based assessment, is a useful alternative to buffet meals setting and allows for the determination of non-metabolic factors associated with feeding behaviour in relation to exercise.

► Buffet meals are often used to measure food intake and assess appetite.
► However, buffet intake can be confounded by non-metabolic external/sensory cues.
► We used a novel computer-based task to assess effects of exercise on appetite.
► Exercise reduced hunger and prospective ideal portion size.
► This approach provides useful insights into the effects of exercise on appetite.