Aerobic capacity of wistar rats: the effects of training and physical detraining at middle-aged
DOI:
https://doi.org/10.11606/1807-5509201800010085Palabras clave:
Aging, Metabolic disease, Maximal lactate steady, Physical exercise, Sedentary, Rats middle-agedResumen
It has been shown that engaging in regular physical exercise yields short- and long-term health benefits, primarily by mitigating the risk for cardiovascular disease, but little information is known about physical deconditioning at aging process. The aim of the present study was to analyze the aerobic capacity, through maximal lactate steady state (MLSS), in Wistar rats of different ages (2,4, 6 e 12 months ) and physical conditioning deconditioning responses in middle-aged rats. The results were significant for weight gain in the sedentary (588 ± 71 g) and detraining animals (576 ± 62 g) at 12 months, whereas the conditioned group maintained their original body weights – BW (515 ± 72 g), similar at four (455 ±17 g) and six months of age (471 ± 37 g). MLSS decreased with age (2 months sedentary (8.4 ± 1% Body Weight, 4 months sedentary (6.4 ± 0.6% BW), 6 months sedentary (5.8 ± 1% BW), 12 months sedentary (5.1 ± 0.7% BW), but physical exercise was effective in attenuating the age-related loss of aerobic capacity after 12 months (5.8 ± 1.3% BW). The physical detraining was (5.3 ± 0.4% BW) was similar at 12 months trained. The physical training in long term protected against the increased of the body weight and fat depots caused by aging, but, this effect was found by deconditioning physical. Additionally, the physical training attenuated the aerobic capacity loss due to aging process and this effect was maintained after detraining physical.
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