Sports Sciences Commons^™

Exercise For Weight Loss: Further Evaluating Energy Compensation With Exercise, Kyle D. Flack, Harry M. Hays, Jack Moreland, Douglas E. Long

Dietetics and Human Nutrition Faculty Publications

PURPOSE: This study assessed how individuals compensate for energy expended during a 12-wk aerobic exercise intervention, elucidating potential mechanisms and the role exercise dose plays in the compensatory response.

PARTICIPANTS AND DESIGN: Three-arm, randomized controlled trial among sedentary adults age 18 to 40 yr, body mass index of 25 to 35. Groups included six exercise sessions per week, two sessions per week, and sedentary control.

METHODS: Rate of exercise energy expenditure was calculated from a graded exercise test averaged across five heart rate zones. Energy compensation was calculated as the difference between expected weight loss (based on exercise energy expenditure) …

Inducing Incentive Sensitization Of Exercise Reinforcement Among Adults Who Do Not Regularly Exercise—A Randomized Controlled Trial, Kyle D. Flack, Kelsey Elise Ufholz, Luann Johnson, James N. Roemmich

Dietetics and Human Nutrition Faculty Publications

Background

Increasing exercise reinforcement, or decreasing sedentary reinforcement, may reduce sedentary activity and promote habitual exercise. Repeated exposures to a reinforcer may increase its reinforcing value (i.e., incentive sensitization). It is not yet known whether incentive sensitization occurs for exercise or factors associated with incentive sensitization for exercise reinforcement. The purpose was to determine whether exercise exposures increase exercise reinforcement relative to a sedentary alternative and whether this sensitization of exercise reinforcement would alter physical or sedentary behavior. This work also determined whether exercise dose, intensity, and preference and tolerance for exercise intensity were associated with incentive sensitization of exercise. …