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EFFECT OF ISOLOAD ACUTE EXERCISE WITH DIFFERENTS VOLUME AND INTENSITY MANIPULATIONS OVER MUSCLE AND HEPATIC GLYCOGEN STORES IN SWIMMING RATS. André V. Cordeiro (IC), Lucas D. M. Forte (PG) e Fúlvia B. Manchado-Gobatto (PQ). Abstract This study aimed to investigate the effect of an acute exercise bout performed on intensities below, at and above the anaerobic threshold (but at the same total workload) over the muscle and liver glycogen stores. For that, after determination of anaerobic threshold by lactate minimum test, rats were divided in six groups: GC, G90, G100, G110 and G120 (control and exercised at 90, 100, 110 and 120% of anaerobic threshold). Rats were euthanized immediately (0h) and four hours after exercise bout. The results demonstrated significant glycogen depletion in liver when exercise is performed in high intensities (G110 and G120). Also, despite only observed 4h after exercise, glycolytic muscle (gluteus) had significant reductions in glycogen content for exercised groups. Our results suggests that despite performed on isoload, high intensities are more dependent of glucose metabolism, and mainly when considered hepatic and white muscle tissues.

Effect of isoload acute exercise with differents volume and intensity manipulations over muscle and hepatic glycogen stores in swimming rats