The functional exercise capacity and its correlates in obese treatment-seeking people with binge eating disorder: an exploratory study

Purpose: The primary aim was to compare the functional exercise capacity between obese treatment-seeking people with and without binge eating disorder (BED) and non-obese controls. The secondary aim was to identify clinical variables including eating and physical activity behaviour, physical complaints, psychopathology and physical self-perception variables in obese people with BED that could explain the variability in functional exercise capacity. Methods: Forty people with BED were compared with 20 age-, gender- and body mass index (BMI)-matched obese persons without BED and 40 age and gender matched non-obese volunteers. A 6-minute walk test (6MWT), the Baecke physical activity questionnaire, the Symptom Checklist-90, the Physical Self-Perception Profile and the Eating Disorder Inventory were administered. Physical complaints before and after the 6MWT were also documented. Results: The distance achieved on the 6MWT was significantly lower in obese participants with BED (512.1 +/- 75.8m versus 682.7 +/- 98.4, p<0.05) compared to non-obese controls. No significant differences were found between obese participants with and without BED. Participants with BED reported significantly (p<0.05) more musculoskeletal pain and fatigue after the walk test than obese and non-obese controls. A forward stepwise regression analysis demonstrated that sports participation and perceived physical strength explained 41.7% of the variance on the 6MWT in obese participants with BED. Conclusion: Physical activity participation, physical self-perception and perceived physical discomfort during walking should be considered when developing rehabilitation programs for obese people with BED.