The Open Sports Medicine Journal

2008, 2 : 9-13
Published online 2008. DOI: 10.2174/1874387000802010009
Publisher ID: TOSMJ-2-9

Evidence for Oxidative Stress Damage Following High Intensity Anaerobic Performance

Julien S. Baker and Bruce Davies
Health and Exercise Science Research Laboratory, Faculty of Health, Sport and Science, University of Glamorgan, Pontypridd, Wales, CF37 1DL, UK.

ABSTRACT

The purpose of this study was to compare power outputs, and blood concentrations of lipid hydroperoxides (LH), malondialdehyde (MDA) and lactate ([La-] B) following 30s of maximal cycle ergometry when resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Differences (P < 0.05) in peak power output (PPO), pedal velocity (PV) and resistive forces (RF) were observed when the TBM and FFM protocols were compared (953 ± 114 W vs 1020 ± 134 W ; 134 ± 8 rpm vs 141 ± 7 rpm ; 6 ± 1 kg vs 5 ± 1 kg respectively). LH and MDA concentrations increased immediately post exercise during the TBM protocol only (P < 0.05) and decreased 24 h post exercise. Alphatocopherol and uric acid concentrations decreased immediately post exercise for both protocols (P < 0.05) and increased 24 h later (P < 0.05). The results of the study suggest that greater power outputs are obtainable with significantly less oxidative stress when resistive forces reflect FFM as opposed to TBM.

Keywords:

Oxidative stress, high intensity exercise.