Exercício aeróbico aumenta performance durante o treinamento em ratos programados durante a lactação por dieta de baixa proteína

Abstract

The present study aims to demonstrate the effects of moderate-intensity aerobic physical exercise in rats from a maternal lineage that had a low-protein diet during lactation. Food consumption, weight gain, main body fat stores and plasma glucose concentrations of animals submitted to the intravenous glucose tolerance test were analyzed. Male Wistar rats aged 80 days and females aged 70 days were used, which were subjected to 5 days of adaptation, after which there was a crossing in the proportion of one male to three females. After birth, they were divided into two experimental groups, which received a normal protein diet during lactation (NP – 20,5% protein) at the same time as another group was fed a low protein diet (LP – 4% protein) during first 14 days of lactation. At twenty-one days, the animals were weaned. At 30 days, the animals are subdivided into NP-EX (subjected to moderate-intensity aerobic physical exercise for 60 days), NP-SD (sedentary), LP-EX (submitted to moderate-intensity aerobic physical exercise for 60 days) and LP-SD (sedentary). Through the results obtained, it was observed that, through a low-protein diet during part of lactation, the animals obtained a low weight, a quick catch-up and maintained their weight in adult life. Furthermore, they showed a change in glucose homeostasis. However, when subjected to moderate-intensity aerobic physical exercise, the effects that were altered due to the low-protein diet programming were normalized.