Compensatory eating after exercise in everyday life: Insights from daily diary studies

Area of Science:

• Behavioral Science
• Nutrition Science
• Exercise Physiology

Background:

• Weight loss success with exercise varies significantly among individuals.
• Increased food intake following exercise is a potential factor contributing to this variability.
• Limited research exists on long-term, naturalistic post-exercise eating behaviors.

Purpose of the Study:

• To investigate how exercise and contextual factors influence the healthiness and quantity of food consumed post-exercise.
• To assess eating patterns in real-world settings using daily diary methods.

Main Methods:

• Two daily diary studies were conducted over 28 days with participants (n=48 in Study 1, n=55 in Study 2).
• Participants recorded daily food intake, exercise, and contextual factors (e.g., hunger).
• Food descriptions were coded for healthiness (healthy, unhealthy, mixed), and portion sizes were recorded in Study 2.

Main Results:

• Contrary to expectations, post-exercise meals were less likely to be unhealthy compared to meals on non-exercise days.
• Participants consumed proportionally fewer unhealthy meals on exercise days.
• Participants consumed larger meal portions after exercise compared to non-exercise days.

Conclusions:

• Individuals do not consistently engage in compensatory unhealthy eating after exercise.
• While meal healthiness did not decrease, portion sizes increased post-exercise.
• Naturalistic assessment methods are crucial for understanding compensatory eating behaviors and developing health strategies.