Effects of stress on chewing and food intake in patients with anorexia nervosa

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

OBJECTIVE: The present study investigates the impact of psychosocial stress on chewing and eating behavior in patients with anorexia nervosa (PAN ).

METHOD: The eating and chewing behavior of PAN were examined in a standardized setting by means of a chewing sensor. These procedures encompassed n = 19 PAN , age, and gender matched to n = 19 healthy controls (HC). Food intake and chewing frequency were assessed in two experimental conditions: rest versus stress (via Trier Social Stress Test). To verify stress induction, two appraisal scales were employed. In addition, chronic stress, psychological distress and eating disorder symptoms were assessed.

RESULTS: In terms of food intake and chewing frequency, the results of the 2x2 ANOVA demonstrated a significant effect of condition and group. During stress, all participants demonstrated a higher chewing frequency and a decreased ingestion. In general, patients ate less at a lower chewing frequency (vs. HC). However, sample specific analyses demonstrated that the eating and chewing behavior of PAN remained unchanged regardless of the condition, except for their drinking. Food choices were comparable between the groups, but appetite values significantly differed.

DISCUSSION: The increase in chewing frequency in all participants during stress suggests that chewing might impact affect regulation, however, not specifically in PAN . Future research should clarify to what extent the normalization of chewing behavior could ameliorate ED-symptoms (incl. food intake) in PAN . The application of a chewing sensor could support this aim and future interventions.

Details

OriginalspracheEnglisch
Seiten (von - bis)1160-1170
Seitenumfang11
FachzeitschriftThe International journal of eating disorders
Jahrgang54
Ausgabenummer7
PublikationsstatusVeröffentlicht - Juli 2021
Peer-Review-StatusJa

Externe IDs

Scopus 85102242646
ORCID /0000-0002-1491-9195/work/142255964

Schlagworte

Schlagwörter

  • Anorexia Nervosa, Appetite, Feeding Behavior, Humans, Mastication, Psychological Tests