INFLUÊNCIA DO VOLUME DO TREINAMENTO DE NATAÇÃO SOBRE A BIOMETRIA E A HOMEOSTASE METABÓLICA EM RATAS

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

In the last years several researches have shown the extent to which physical activity has been efficient in the treatment and prevention of disease. In the present work we studied biochemical and nutritional parameters that give us a general vision of the benefits of exercise for health. Forty five female Fisher rats were distributed into four groups which were subjected to swimming training in different volumes (30, 60, 120 and 240 minutes) as well as a sedentary group; all animals were fed a commercial ration and received food and water ad libitum. The results showed an increase in food intake, fecal volume and in heart weight as well as a decrease in body weight and in the weight of the finger long extensor and gastrocnemius muscles in the 240 group. In relation to glucose, hemoglobin and albumin an increase was observed in the groups that trained for longer periods (120 and 240 minutes). As for lipid profile, total cholesterol was diminished in the animals that swam 30 minutes. When hepatic function was assessed, animals swimming 30, 120 and 240 minutes showed an increase in total protein although an increase in alkaline phosphatase was found only in the 120 minutes group; AST activity was decreased in the 30 minutes group but ALT activity was higher in the 240 minutes group. In relation to the renal function creatinine was augmented in the 30 minute-trained rats in relation to the sedentary group and animals in groups 60, 120 and 240 minutes had higher urea concentration. Free sulphydryls were found diminished amongst rats that swam 120 and 240 minutes. Creatine kinase activity was diminished in groups 60, 120 and 240 as compared to 30 and sedentary groups while lactic desidrogenase had lower values in the animals of the 30 minutes group as compared to the sedentary ones. The present study thus showed that the effect of training on biochemical parameters improved the physical conditioning of the animals, generating better adaptation in the results of lactate and lactic desidrogenase without promoting increase in antioxidants and creatine kinase, besides being efficient in decreasing the concentration of cholesterol and its fractions. Good responses to training were observed in both hepatic and renal functions.

ASSUNTO(S)

1. exercícios físicos - teses. 2. natação - teses. 3. homeostase - teses. 4. antioxidantes - teses. i. universidade federal de ouro preto. ii. título. bioquimica

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