Hipertermia y metales traza

Resumo

The present doctoral thesis aimed to evaluate the acute effect of exercise in normothermia and hyperthermia and the effect of exposure to heat at high temperatures on exercise in normothermia and hyperthermia in the concentrations of Mg, P, Cu, Fe, Se and Zn in erythrocytes, serum, urine and sweat. The present doctoral thesis aimed to evaluate the acute effect of exercise in normothermia and hyperthermia and the effect of exposure to heat at high temperatures on exercise in normothermia and hyperthermia in the concentrations of Mg, P, Cu, Fe, Se and Zn in erythrocytes, serum, urine and sweat. Two periods of research were conducted for this purpose: acute effect and heat exposure effect. In the first period the participants performed two maximum incremental tests until exhaustion in normothermia (22ºC) and hyperthermia (42 ºC). Samples of erythrocytes, serum and urine were collected to determine the elements by ICP-MS. The second period was similar, but after the first two tests the subjects were divided into Control Group (CG) and Experimental Group (EG). Subsequently, the EG performed nine sessions of heat exposure at high temperatures (100ºC). After the sessions, both groups performed the initial tests. Urine, serum and sweat samples were collected and analyzed by ICP-MS. The acute effect produced only changes in Mg. The period of exposure to heat produced a decrease in the excretion of the elements, but increased their urinary excretion after exercise. It can be concluded that the repeated exposure to heat elicits changes in the excretion of the elements studied.