Please use this identifier to cite or link to this item: https://repositorio.unifesp.br/handle/11600/58478
Title: Acute physical exercise under hypoxia improves sleep, mood and reaction time
Authors: Lemos, Valdir de Aquino [UNIFESP]
Santos, Ronaldo Vagner Thomatieli dos [UNIFESP]
Antunes, Hanna Karen Moreira [UNIFESP]
Lira, Fabio Santos de
Bittar, Irene Guarido Luz [UNIFESP]
Caris, Aline Venticinque [UNIFESP]
Tufik, Sergio [UNIFESP]
Mello, Marco Tulio de
Keywords: Physical exercise
Hypoxia
Sleep
Mood
Reaction time
Issue Date: 2016
Publisher: Pergamon-Elsevier Science Ltd
Citation: Physiology & Behavior. Oxford, v. 154, p. 90-99, 2016.
Abstract: This study aimed to assess the effect of two sessions of acute physical exercise at 50% VO2peak performed under hypoxia (equivalent to an altitude of 4500 in for 28 h) on sleep, mood and reaction time. Forty healthy men were randomized "into 4 groups: Normoxia (NG) (n = 10); Hypoxia (HG) (n = 10); Exercise under Normoxia (ENG) (n = 10); and Exercise under Hypoxia (EHG) (n = 10). All mood and reaction time assessments were performed 40 min after awakening. Sleep was reassessed on the first day at 14 h after the initiation of hypoxia; mood and reaction time were measured 28 h later. Two sessions of acute physical exercise at 50% VO2peak were performed for 60 min on the first and second days after 3 and 27 h, respectively, after starting to hypoxia. Improved sleep efficiency, stage N3 and REM sleep and reduced wake after sleep onset were observed under hypoxia after acute physical exercise. Tension, anger, depressed mood, vigor and reaction time scores improved after exercise under hypoxia. We condude that hypoxia impairs sleep, reaction time and mood. Acute physical exercise at 50% VO2peak under hypoxia improves sleep efficiency, reversing the aspects that had been adversely affected under hypoxia, possibly contributing to improved mood and reaction time. Crown Copyright (C) 2015 Published by Elsevier Inc. All rights reserved.
URI: https://repositorio.unifesp.br/handle/11600/58478
ISSN: 0031-9384
Other Identifiers: https://doi.org/10.1016/j.physbeh.2015.10.028
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