Resumo

LOPEZ TAGLE, Daimilé et al. Characterization of redox balance in persons exponed to intensive psychophysical activity. Rev Cub Med Mil [online]. 2009, vol.38, n.1, pp. 0-0. ISSN 1561-3046.

A longitudinal prospective study was made in which oxidative stress markers in an intensive psychophysical condition were taken into consideration. The sample was made up of 31 exposed male subjects, who had performed a special graduation exercise. The research was divided into two stages, that is, basal and experimental, in which these individuals under study were their own controls at the same time. Both in the basal and the experimental phases (during and immediately afterwards) the subjects were evaluated from the clinical and biochemical viewpoints. The sample under study showed significant increase in plasma malonylaldehyde concentration in the posterior phase (441.65 nmol/L) in relation to the previous phase (347.61 nmol/L). Catalase significantly increased but no remarkable changes were found in serum superoxide dismutase and hydrogen peroxide concentrations. Statistically significant negative correlation was found between malonylaldehyde and vitamin C (r= -0.410; p= 0.025) and between superoxide dismutase and vitamin C (r= -0.467; p= 0.011). Additionally, zinc oligoelement positively correlated with catalase (r= 0.524; p= 0.004). Redox imbalance occurred as a result of intensive psychophysical activity, which expressed in occurrence of lipid peroxidation. There was a favourable antioxidant response to the duration of exercise, but if this had been longer, it could have depleted this response. The variations found may represent risk factors for atherosclerotic cardiovascular disease at younger ages and limit the useful life of the exposed staff.

Palavras-chave : Oxidative stress; antioxidant; physical exercise..

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )