Registered report: A pilot investigation of acute exercise response among girls and young women with and without eating disorders

Katherine Schaumberg, Danielle Peters, Rachel Ahrenholtz, Kevin M Crombie, Ruisu Zhang, Sasha Gorrell, Katherine Schaumberg, Danielle Peters, Rachel Ahrenholtz, Kevin M Crombie, Ruisu Zhang, Sasha Gorrell

Abstract

Objective: Driven exercise (DEx) is a serious and common feature of eating disorders (EDs), but current understanding of factors that give rise to and maintain DEx is limited. DEx may be reinforced through its effects on the threat reduction and reward systems. The current protocol is designed to evaluate acute psychobiological response to exercise among female participants (age 16-22) with and without EDs.

Method: Twenty medically-stable participants with restrictive-spectrum EDs and 20 healthy control (HC) participants will complete study screening and three task visits which will include two 30-minute bouts of aerobic exercise.

Results: We aim to validate and demonstrate feasibility of two tasks capturing exercise response in this sample. Further, we will estimate the degree to which a bout of exercise impacts state body image, affect, and circulating concentrations of biological markers among participants, and we will examine whether the impact of exercise on psychological outcomes may differ across ED and HC groups.

Discussion: Completion of this project will contribute to the conceptualization of DEx and how individuals' acute biological and affective responses to exercise contribute to risk for and maintenance of DEx.

Keywords: biomarkers; compulsive; exercise; feeding and eating disorders; reward.

Conflict of interest statement

Conflict of interest statement: The authors have no conflict to declare.

© 2021 Wiley Periodicals LLC.

Figures

Figure 1.
Figure 1.
Describes participant flow through the study. Participants will attend in-person study visits Day A-C in a randomized order. Day A includes the rest condition of the Prescribed Exercise Task and the exercise condition of the Self-Paced Exercise Task. Day B includes half of the self-report measures and the exercise condition of the Prescribed Exercise Task. Day C includes the other half of the self-report measures and the rest condition of the Self-Paced Exercise Task.

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