High altitude exposure impairs sleep patterns, mood, and cognitive functions
- 16 July 2012
- journal article
- research article
- Published by Wiley in Psychophysiology
- Vol. 49 (9), 1298-1306
- https://doi.org/10.1111/j.1469-8986.2012.01411.x
Abstract
This work evaluated the importance of sleep on mood and cognition after 24 h of exposure to hypoxia. Ten males, aged 23–30 years, were placed in a normobaric chamber simulating an altitude of 4,500 m. Sleep assessments were conducted from 22:00–6:00; all mood and cognitive assessments were performed 20 min after awakening. The assessments were conducted in normoxic conditions and after 24 h of hypoxia. Sleep was reevaluated 14 h after the start of exposure to hypoxic conditions, and mood state and cognitive functions were reevaluated 24 h after the start of exposure to hypoxic conditions. Hypoxia reduced total sleep time, sleep efficiency, slow-wave sleep, and rapid eye movement. Depressive mood, anger, and fatigue increased under hypoxic conditions. Vigor, attention, visual and working memory, concentration, executive functions, inhibitory control, and speed of mental processing worsened. Changes in sleep patterns can modulate mood and cognition after 24 h.Keywords
This publication has 50 references indexed in Scilit:
- Hypoxia. 3. Hypoxia and neurotransmitter synthesisAmerican Journal of Physiology-Cell Physiology, 2011
- Hypobaric hypoxia modulates brain biogenic amines and disturbs sleep architectureNeurochemistry International, 2011
- S100B Protein, a Damage-Associated Molecular Pattern Protein in the Brain and Heart, and BeyondCardiovascular Psychiatry and Neurology, 2010
- Exacerbation of sleep apnoea by frequent central events in patients with the obstructive sleep apnoea syndrome at altitude: a randomised trialThorax, 2010
- Effect of depression on sleep: Qualitative or quantitative?Indian Journal of Psychiatry, 2009
- Changes in sleep quality of athletes under normobaric hypoxia equivalent to 2,000-m altitude: a polysomnographic studyJournal of Applied Physiology, 2007
- Mood responses to athletic performance in extreme environmentsJournal of Sports Sciences, 2004
- Elevation-Dependent Symptom, Mood, and Performance Changes Produced by Exposure to Hypobaric HypoxiaThe International Journal of Aviation Psychology, 1998
- Effects of Altitude on Mood, Behaviour and Cognitive FunctioningSports Medicine, 1993
- Control of Anxiety and Acute Mountain Sickness in Himalayan MountaineersInternational Journal of Sports Medicine, 1992