A comparison effects of carbohydrate alone and carbohydrate with L-Arginine supplementation on serum insulin and glucose levels during recovery times after aerobic activity

Blood glucose level will be affected during physical activity therefore the supplementation could apply the important role in this case. The purpose of this study was to compare the effect of carbohydrate alone and with L-Arginine supplementation on serum insulin and glucose levels during recovery periods after maximal aerobic activity. 12 physical education female students with mean age 21.33±1.37 years old and body mass index 21.71±. 59 kg m2 volunteered to participate in this study. The protocol was performed in two separate phase; both control and experimental groups were done within a week. In the control phase, subjects performed maximal aerobic activity with 80 85 MHR intensity until fatigue and then they consumed the carbohydrate supplement. In the experimental phase, after aerobic activity, carbohydrate with L-Arginine drink was consumed. Blood samples were taken before and after exercise, and also 1, 2 and 3 h after supplementation. Data were analyzed by (ANOVA) with repeated measure and Bonferoni post hoc tests. Significant level was set at p< 0.05. SPSS18 software was used for data analyzing. The results showed that carbohydrate supplementation with L-Arginine than carbohydrates have a significant increase in glucose concentration 2 and 3 hours (p=0.0001) and increase in insulin concentration immediately, 2 and 3 hours (p=0.0001) after intensive aerobic exercise. Carbohydrate with L Arginine consumption as compare to the carbohydrates consumption could increased glucose and insulin concentration levels during recovery period after exercise which is indicated the increasing of muscle glycogen synthesis during the recovery.