"I'm not physically active - I only go for walks": physical activity in patients with longstanding eating disorders

Abstract

Objective: To examine self reported versus objectively assessed moderate-to-vigorous physical activity (MVPA), and different reasons for exercise, in patients with longstanding eating disorders (ED) when compared with controls.

Method: Inpatient females (n = 59, mean 30.1 years) and nonclinical age matched controls (n = 53, mean 31.3 years) accepted participation in this cross sectional study. Instruments included accelerometer ActiGraph, physical activity diary, Reasons for Exercise Inventory, and Eating Disorders Examination interview.

Results: Self reported and objectively assessed MVPA were higher across all ED diagnoses when compared with controls. The patients' self reported MVPA was lower than the objectively assessed MVPA; no difference was found in controls. Regulation of negative affects, not weight/appearance, was a more important, whereas fitness/health was a less important reason for exercise in patients than controls.

Discussion: The underreporting of MVPA in some patients with ED may warrant clinical attention.