Authors:	Kolar, David R. Neumayr, Christina Roth, Melina Voderholzer, Ulrich Perthes, Karin Schlegl, Sandra
Title:	Testing an emotion regulation model of physical activity in adolescents with anorexia nervosa : a pilot ecological momentary assessment
Online publication date:	10-Jun-2022
Year of first publication:	2020
Language:	english
Abstract:	OBJECTIVE Adolescents with anorexia nervosa (AN) often show increased levels of exercise and physical activity. Psychological models suggest that physical activity in AN might attenuate momentary negative affect. However, this has not been directly tested in adolescents with AN, and it remains unclear whether this is a distinct mechanism of physical activity in AN compared with healthy controls (HCs). METHOD In a 1-day ecological momentary assessment, 32 adolescent inpatients with AN and 30 HCs responded to hourly questions on momentary affect while wearing an actigraph to objectively assess physical activity. RESULTS Linear mixed models identified that adolescents with AN experienced more aversive tension, more negative affect, and less positive affect throughout the day than HCs. Preliminary evidence for a momentary association of higher levels of physical activity with positive affect were found for both groups, whereas higher levels of physical activity were associated with less negative affect in adolescents with AN only. When correcting for multiple testing, interactions did not hold statistical significance. DISCUSSION Our results indicate a down-regulation effect of physical activity on negative affect for AN and a more general up-regulation effect of positive affect. However, our sample size was small, and replication of our findings is needed.
DDC:	610 Medizin 610 Medical sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 04 Medizin
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7112
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY-NC
Information on rights of use:	https://creativecommons.org/licenses/by-nc/4.0/
Journal:	European eating disorders review 28 2
Pages or article number:	170 183
Publisher:	Wiley
Publisher place:	Chichester
Issue date:	2020
ISSN:	1099-0968
Publisher DOI:	10.1002/erv.2706
Appears in collections:	JGU-Publikationen