The effect of interval aerobic training on malondialdehyde and total capacity antioxidant in sedentary active women

The increase of free radicals in different tissues has destructive effects in cells and body structures that it reduces with antioxidative effect of regular training. So, the aim of this study was investigation of interval aerobic training effect on malondialdehyde (MDA) total antioxidant capacity (TAC) and oxidative stress in active women. Thirty untrained, healthy and non-smoker women (age = 27.6±5.5 yrs, and weight = 64.2±3.4 kg), volunteered to participate and divided randomly in 2 groups of interval training and control. At the beginning the training was performed in 30 minutes with 1-1 proportion consist of running with 60% HRmax and speed walking. From week 4 increased to 45 minutes with 2-1 proportion with 60% HRmax (running - walking) and after weeks 11 to 14 increased to 60 minutes with 2-1 proportion. Before and after training course, blood samples were collected. Independent and paired t-tests were used for analyzing of data. The results showed that 14 weeks interval aerobic training led to a significant decrease in MDA (5.5±1.48 to 3.6±0.77) and increase in TAC (1.98±0.49 to 2.99±0.32). VO2max was increased significantly in training group (p<0.05). Also, MDA level (3.6±1.05 in contrast with 4.9±0.37) was lower and TAC (2.21±0.52 in contrast with 2.99±0.32) was higher in training group than control (p<0.05). LDL, TChol, TG were lower and HDL was higher in training group than control. It can be concluded that the regular interval aerobic training with increase of its duration and intensity decreased oxidative stress and lipid proxidation, and improves blood lipid profile in sedentary women.