Physical activity and sleep of patients treated for Anorexia Nervosa

Background: Methods for studying physical activity and sleep in anorexia nervosa vary, preventing comparison. However, most studies suggest physical activity and sleep behaviour influence treatment outcomes in anorexia nervosa. Purpose: Transparent reporting of physical activity and sleep behaviour in anorexic patients at the beginning of treatment. Methods: 43 female anorexia nervosa patients at an in-patient ward were recruited. Within eight days of admission participants wore a three-axis accelerometer (Axivity) for a week. The first and last day were omitted. Data was analysed with the R package GGIR, with acceleration expressed in Euclidean norm minus one (ENMO). Results: After exclusion due to low compliance and corrupt data 28 participants remained. Their mean (SD) age was 17.8 (7.0) years and age adjusted BMI was 15.9 (3.8) kg/m2. Mean sleep duration was 7.1 (0.8) h and sleep efficiency was 90 (4) %. Twenty-three participants did not reach sleep duration recommendations, with the largest discrepancy seen in young patients (p
The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress