Physical activity and sleep of patients treated for Anorexia Nervosa

Oral Presentation B7.2

Authors

  • Billy Langlet Karolinska Institutet
  • Fannie Vestmark Karolinska Institutet
  • Modjtaba Zandian Karolinska Institutet
  • Josefin Stolt Mandometer Clinics
  • Cecilia Bergh Karolinska Institutet; Mandometer Clinics
  • Per Södersten Karolinska Institutet

DOI:

https://doi.org/10.14288/hfjc.v14i3.530

Keywords:

Anorexia Nervosa, Physical Activity, Eating Disorder, Sleep, Treatment

Abstract

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<0.001). Daytime ENMO was 16.5 (3.7) mg and the highest coherent 30-minute ENMO bout was 47.3 (11.3) mg. There was no significant correlation across the five days in duration and efficiency of sleep, daytime ENMO or highest coherent 30-minute ENMO bout. Conclusion: Physical activity can be kept low and sleep quality high in an in-patient ward for anorexic patients. Sleep duration might be a problem, especially for younger individuals, where treatment need to account for their increased sleep requirements. There appears to be no habituation effect during treatment. Funding: The Mandometer clinics.

Published

2021-09-30

How to Cite

Langlet, B., Vestmark, F., Zandian, M., Stolt, J., Bergh, C., & Södersten, P. (2021). Physical activity and sleep of patients treated for Anorexia Nervosa: Oral Presentation B7.2. The Health & Fitness Journal of Canada, 14(3). https://doi.org/10.14288/hfjc.v14i3.530