The effects of high-intensity exercise on neural responses to images of food

摘要: BackgroundAcute bouts of high-intensity exercise modulate peripheral appetite regulating hormones to transiently suppress hunger. However, the effects of physical activity on central appetite regulation have yet to be fully investigated.ObjectiveWe used functional magnetic resonance imaging (fMRI) to compare neural responses to visual food stimuli after intense exercise and rest.DesignFifteen lean healthy men [mean ± SD age: 22.5 ± 3.1 y; mean ± SD body mass index (in kg/m2): 24.2 ± 2.4] completed two 60-min trials—exercise (EX; running at ∼70% maximum aerobic capacity) and a resting control trial (REST)—in a counterbalanced order. After each trial, an fMRI assessment was completed in which images of high- and low-calorie foods were viewed.ResultsEX significantly suppressed subjective appetite responses while increasing thirst and core-body temperature. Furthermore, EX significantly suppressed …