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Oxidative Medicine and Cellular Longevity
Volume 2014, Article ID 107137, 8 pages
http://dx.doi.org/10.1155/2014/107137
Research Article

Effects of Heat Acclimation on Changes in Oxidative Stress and Inflammation Caused by Endurance Capacity Test in the Heat

1Institute of Exercise Biology and Physiotherapy, University of Tartu, 18 Ülikooli Street, 50090 Tartu, Estonia
2Estonian Centre of Behavioural and Health Sciences, University of Tartu, 18 Ülikooli Street, 50090 Tartu, Estonia
3Institute of Biomedicine and Translational Medicine, University of Tartu, 19 Ravila Street, 50411 Tartu, Estonia
4Department of Vascular Surgery, Tartu University Hospital, 8 Puusepa Street, 51014 Tartu, Estonia
5Department of Cardiology, University of Tartu, 18 Ülikooli Street, 50090 Tartu, Estonia
6Department of Sports Medicine and Rehabilitation, University of Tartu, 18 Ülikooli Street, 50090 Tartu, Estonia
7Sports Medicine and Rehabilitation Clinic, Tartu University Hospital, 1a Puusepa Street, 50406 Tartu, Estonia

Received 11 January 2014; Revised 15 April 2014; Accepted 25 April 2014; Published 11 May 2014

Academic Editor: Vladimir Jakovljevic

Copyright © 2014 Triin Kaldur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. The aim was to determine the effect of heat acclimation (HA) on oxidative stress (OxS) and inflammation in resting conditions and on the response pattern of these parameters to exhausting endurance exercise. Methods. Parameters of OxS and inflammation were measured in non-heat-acclimated status (NHAS) and after a 10-day HA program (i.e., in heat-acclimated status; HAS) both at baseline and after an endurance capacity (EC) test in the heat. Results. As a result of HA, EC increased from to minutes . HA increased OxS level: total peroxide concentration rose from to μmol/L and oxidative stress index (OSI) from to % . In NHAS, the EC test increased OxS level: total peroxide concentration rose from to μmol/L and OSI from to % . However, in HAS, the EC test reduced OSI from to % . The value of log high-sensitive C-reactive protein increased from to  mg/L in NHAS and from to  mg/L in HAS. Conclusion. HA increases OxS level. However, beneficial adaptive effects of HA on acute exhaustive exercise-induced changes in OxS and inflammation parameters occur in a hot environment.