European Journal of Applied Physiology

, Volume 105, Issue 3, pp 439–444

The effect of 60-h sleep deprivation on cardiovascular regulation and body temperature

  • Jani Vaara
  • Heikki Kyröläinen
  • Mikko Koivu
  • Mikko Tulppo
  • Taija Finni
Original Article

DOI: 10.1007/s00421-008-0921-5

Cite this article as:
Vaara, J., Kyröläinen, H., Koivu, M. et al. Eur J Appl Physiol (2009) 105: 439. doi:10.1007/s00421-008-0921-5

Abstract

This study examined cardiovascular regulation and body temperature (BT) during 60 h of sleep deprivation in 20 young healthy cadets. Heart rate variability was measured during an active orthostatic test (AOT). Measurements were performed each day in the morning and evening after 2, 14, 26, 38, 50 and 60 h of sleep deprivation. In AOT, in the sitting and standing positions, heart rate decreased (P < 0.001), while high frequency and low frequency power increased (P < 0.05–0.001) during sleep deprivation. Body temperature also decreased (P < 0.001), but no changes were detected in blood pressure. In conclusion, the accumulation of 60 h of sleep loss resulted in increased vagal outflow, as evidenced by decreased heart rate. In addition, BT decreased during sleep deprivation. Thus, sleep deprivation causes alterations in autonomic regulation of the heart, and in thermoregulation.

Keywords

Sleep deprivationHeart rate variabilityAutonomic nervous systemBlood pressureBody temperature

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Jani Vaara
    • 1
  • Heikki Kyröläinen
    • 1
    • 2
  • Mikko Koivu
    • 2
  • Mikko Tulppo
    • 3
  • Taija Finni
    • 1
  1. 1.Department of Biology of Physical ActivityUniversity of JyväskyläJyväskyläFinland
  2. 2.National Defence UniversityHelsinkiFinland
  3. 3.Department of Exercise and Medical PhysiologyVerveOuluFinland