Introduction: Muscle contractions during exercise lead to elevated levels of reactive oxygen species (ROS) in skeletal muscle. These highly reactive molecules have many deleterious effects, such as a reduction of force generation and increased muscle atrophy. Kuo et al (2015) investigate the effect of green tea extract (GTE) supplementation combined with endurance training on endurance capacity and performance in sedentary men showed that production MDA of exercise, was significantly reduced.
Methods: In this study, girls qualify randomly divided into three groups: exercise and supplemented (EX-GTC, 9 girls), exercise (EX, 10 girls) and supplements (GTC, 9 girls). Interval aerobic exercise program was held 3 days a week (30min) for 8 weeks. Intaking 3 capsules of green tea (500 mg) daily. Blood samples were taken to measure malondialdehyde (MDA) in the pretest and post-test. Normal data was analyzed of Covariance analysis tests in significance level of P≥0.05 it was done by SPSS version 21.
Results: The results of statistical analysis showed that 8 weeks of interval aerobic exercise and consuming green tea supplementation significantly decreased the MDA.
Discussion: The results showed that supplementation with green tea and aerobic exercise in reducing the amount of MDA (as a marker of oxidative stress) is impressive and can be changed to reduce the adverse oxidative stress. Catechin contained in green tea, especially Epi gallo catechin-3-gallate (EGCG) may inhibition lipid peroxidation by reducing the production of free radicals and reconstruction their tocopherol. Catechin prevented significantly reduce the concentration of plasma tocopherol and delayed the onset of plasma lipid peroxidation process.