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Influence of Acute Physical Activity on Stress Reactivity in Obese and Normal Weight Children: A Randomized Controlled Trial

Authors
  • Messerli-Bürgy, Nadine
  • Horsch, Antje
  • Schindler, Christian
  • Boichat, Anaëlle
  • Kriemler, Susi
  • Munsch, Simone
  • Crottet, Bertrand
  • Marquez-Vidal, Pedro M.
  • Borghini, Ayala
  • Puder, Jardena J.
Type
Published Article
Journal
Obesity Facts
Publisher
S. Karger AG
Publication Date
Mar 07, 2019
Volume
12
Issue
1
Pages
115–130
Identifiers
DOI: 10.1159/000494294
PMID: 30844804
Source
Karger
Keywords
License
Green
External links

Abstract

Objective: Physical activity (PA) may influence acute stress reactivity in children differently depending on their weight. This randomized controlled trial investigated the impact of acute PA and of BMI status (overweight/obese (OB/OW) and normal weight (NW) on stress reactivity. Method: 50 prepubertal children (24 OW/OB and 26 NW) were randomly assigned to the PA or sedentary arm (SED) for 30 min followed by a stress task. Salivary cortisol, blood pressure (BP), and heart rate (HR) were measured. Results: An interaction effect between the randomization arms and weight status on salivary cortisol was found after the stress task (p = 0.04). Cortisol increased in the SED, but not in the PA arm (p = 0.004 for differences in time course) of NW children. Time course did not differ between both arms in OW/OB children (p = 0.7). OW/OB SED children had a flat cortisol course, and levels were reduced compared to the NW SED or the OW/OB PA children (p ≤ 0.03). Systolic BP increased only in the SED arm (p = 0.01). HR was higher in the PA than in the SED arm during stress (p < 0.001) and showed different time courses (p = 0.006). Conclusion: PA impacted on acute stress reactivity and influenced stress reactivity differently in NW and OW/OB children.

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