European Journal of Applied Physiology

, Volume 98, Issue 6, pp 525–534

Changes in markers of muscle damage, inflammation and HSP70 after an Ironman triathlon race

Authors

    • Faculty of Human SciencesWaseda University
    • Consolidated Research Institute for Advanced Science and Medical CareWaseda University
  • Jonathan Peake
    • Faculty of Human SciencesWaseda University
  • Kazunori Nosaka
    • School of Exercise, Biomedical and Health SciencesEdith Cowan University
  • Mitsuharu Okutsu
    • Consolidated Research Institute for Advanced Science and Medical CareWaseda University
  • Chris R. Abbiss
    • School of Exercise, Biomedical and Health SciencesEdith Cowan University
  • Rob Surriano
    • School of Human Movement and Exercise ScienceUniversity of Western Australia
  • David Bishop
    • School of Human Movement and Exercise ScienceUniversity of Western Australia
  • Marc J. Quod
    • Department of PhysiologyAustralian Institute of Sport
  • Hamilton Lee
    • Department of PhysiologyAustralian Institute of Sport
  • David T. Martin
    • Department of PhysiologyAustralian Institute of Sport
  • Paul B. Laursen
    • School of Exercise, Biomedical and Health SciencesEdith Cowan University
Original Article

DOI: 10.1007/s00421-006-0296-4

Cite this article as:
Suzuki, K., Peake, J., Nosaka, K. et al. Eur J Appl Physiol (2006) 98: 525. doi:10.1007/s00421-006-0296-4

Abstract

We investigated the effects of an Ironman triathlon race on markers of muscle damage, inflammation and heat shock protein 70 (HSP70). Nine well-trained male triathletes (mean ± SD age 34 ± 5 years;O2peak 66.4 ml kg−1 min−1) participated in the 2004 Western Australia Ironman triathlon race (3.8 km swim, 180 km cycle, 42.2 km run). We assessed jump height, muscle strength and soreness, and collected venous blood samples 2 days before the race, within 30 min and 14–20 h after the race. Plasma samples were analysed for muscle proteins, acute phase proteins, cytokines, heat shock protein 70 (HSP70), and clinical biochemical variables related to dehydration, haemolysis, liver and renal functions. Muscular strength and jump height decreased significantly (P < 0.05) after the race, whereas muscle soreness and the plasma concentrations of muscle proteins increased. The cytokines interleukin (IL)-1 receptor antagonist, IL-6 and IL-10, and HSP70 increased markedly after the race, while IL-12p40 and granulocyte colony-stimulating factor (G-CSF) were also elevated. IL-4, IL-1β and tumour necrosis factor-α did not change significantly, despite elevated C-reactive protein and serum amyloid protein A on the day after the race. Plasma creatinine, uric acid and total bilirubin concentrations and γ-glutamyl transferase activity also changed after the race. In conclusion, despite evidence of muscle damage and an acute phase response after the race, the pro-inflammatory cytokine response was minimal and anti-inflammatory cytokines were induced. HSP70 is released into the circulation as a function of exercise duration.

Keywords

Ultraendurance exerciseAcute phase proteinsCytokinesHeat shock protein 70Systemic stress

Copyright information

© Springer-Verlag 2006