Effect of Regular Training on Plasma Thiols, Malondialdehyde and Carnitine Concentrations in Young Soccer Players

Gökhan Metin；M. Koray Gümüstas；Ezel Uslu；Ahmet Belce；Abidin Kayscrilioglu

Soccer ； MBA ； thiols ； carnitine ； VO2ma

The Chinese Journal of Physiology

46卷1期（2003 / 03 / 31）

35 - 39

英文

Physical activity is known to induce oxidative stress in individuals subjected to intense exercise. Contrarily, there are enzymatic and nonenzymatic defence systems against oxygen radicals in aerobic organisms. Sulphydry1 groups such as thio1 and glutathione (GSH) can be given as an example to non-enzymatic low molecular weight antioxidants. Carnitine may be related to the performance enhancement in high intensity intermittent exercises and might probably improve the aerobic capacity by stimulating lipid oxidation in muscle cells during long term exercise. But, the effects caused by this supplement during physical activity have not been fully described in the literature. The aim of the study was to compare plasma thiols (PSU), malondialdehyde (MBA) and carnitine levels and maximal oxygen uptake (VO2max) of the soccers under regular training with the values of the healthy controls. Our results demonstrates that soccers seem to be under less oxidative stress, as their MBA levels were significantly lower (P＜0.001) when compared with the control group while their PSU levels were significantly elevated (P＜0.001), during resting condition. In addition, the plasma carnitine concentrations of the soccer group yields lower values while the VO2ma yields a higher value when compared with the control group. The differences between the soccer and the control groups are significant (for both, P＜0.001). The present research reveals the fact that regular soccer training shows beneficial effect on decreasing of lipid peroxidation levels. Furthermore; the sportsmen who are under intense training programs have low plasma carnitine values which do not cause negative effect on their sportive performance.

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