Minoo Bassami; Banipal Tataroo; Sajad Ahmadizad
Abstract
Purpose: The present study was designed to investigate the effects of L-Arginine supplementation on fat and carbohydrate metabolism during high intensity interval exercise (HIIE) in overweight individuals. Methods: Ten male overweight students performed two HIIE trials including 10 intervals of 3 min ...
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Purpose: The present study was designed to investigate the effects of L-Arginine supplementation on fat and carbohydrate metabolism during high intensity interval exercise (HIIE) in overweight individuals. Methods: Ten male overweight students performed two HIIE trials including 10 intervals of 3 min encompassed 1 min running at 100% of vVO2max and 2 min active recovery at 40% of vVO2max. In each session subjects consumed either supplement or placebo 90 min prior to exercise. Before and after supplementation and immediately after exercise glucose, insulin, non-esterified free fatty acid (NEFA) and triglyceride were measured. Oxygen consumption and exhaled carbon dioxide were collected to calculate fat and carbohydrate oxidation. Results: There were no significant differences between two trials for glucose, insulin, NEFA, triglyceride and fat oxidation (P>0.05). However, carbohydrate oxidation rate was significantly different between two sessions (p < 0.05). In addition, glucose and carbohydrate oxidation were significantly increased following HIIE irrespective of L-Arginine supplementation (p < 0.05). Conclusions: Based on the findings of present study it could be concluded that L-Arginine supplementation leads to increases in carbohydrate oxidation during HIIE in overweight men, but has no effect on resting at metabolism.
