Yafteh

Background: Some scientific data have been reported the positive effects of natural antioxidants on modulating the Total Antioxidant Capacity and muscular damage indicators.
The aim of this research was to examine the effects of Short-Term Grapefruite juice Supplementation on Lipid Peroxidation and Total Antioxidant Capacity and some muscular damage indicators in young men following a session of intensive an resistanceactivity.
Materials and Methods: In a randomized double-blind study twenty young men students were randomly divided into two equal groups of experimental, and control. After supplementation period, subjects performed a session of intensive resistance activity at 85% of one repetition maximum. Changes in the Total Antioxidant Capacity and malondialdehyde and muscular damage indicators (Lactate dehydrogenase and Creatine Kinase) were determined in three phases.
Results: The results showed that changes in the Total Antioxidant Capacity and malondialdehyde after exercise not significantly in the supplementation group, but significantly in the control group. Also, changes in plasma Lactate dehydrogenase and Creatine Kinase after activity were significantly in the control and supplementation groups.
Conclusion: It seems that Short-Term Grapefruit juice supplementation will be useful for improving levels of plasma Total Antioxidant Capacity and thereby inhibiting exercise-induced lipid peroxidation and modification in plasma increased Lactate dehydrogenase and Creatine Kinase after intensive resistance training.