Exercise and energy intake in overweight, sedentary individuals
Department of Medicine, Division of Preventive and Behavioral Medicine
Adult; *Affect; Body Mass Index; *Energy Intake; *Exercise; Female; Humans; Male; Overweight; Regression Analysis; Risk Factors; Time Factors; Weight Loss
Behavioral Disciplines and Activities | Behavior and Behavior Mechanisms | Community Health and Preventive Medicine | Preventative Medicine
Exercise expends energy, but without dietary intervention, exercise does not appear to produce substantial weight loss. The present study examined whether overweight, sedentary individuals increase their energy intake after moderate intensity exercise, particularly in the presence of negative mood. A repeated measures design was used where overweight, sedentary individuals (N=65) completed, in counterbalanced order, two conditions: 3 min of exercise (Active) and 3 min of sedentary activity (Sedentary) during one session. Snack foods were presented 10 min after each activity. Mixed-effects regression modeling revealed no significant effect of Active versus Sedentary condition on energy intake. However, moderational analyses revealed that change in negative mood interacted with condition to predict energy intake, such that participants who reported increased negative mood during exercise consumed more calories in the Active compared to the Sedentary condition. That a short bout of exercise resulted in mood deterioration and increased energy intake for some overweight, sedentary individuals is concerning. Further research examining behavioral and physiological mechanisms of mood deterioration and caloric overcompensation following exercise in overweight, sedentary individuals is warranted.
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Citation: Eat Behav. 2009 Jan;10(1):29-35. Epub 2008 Oct 29. Link to article on publisher's site