Objectives: The aim of this study was to investigate the effect of eight weeks of aerobic training and training in water on oxidative stress indices and total antioxidant capacity in elderly women. Equipment and methods: 45 volunteered women participate as a subject for the study. Subjects were randomly divided into three groups; Aerobic (15 subjects), Training in water (15 subjects) and Control (15 subjects). Before the beginning of the training period, 8-OHdG, 8-isoprostane and total antioxidant capacity were measured. Both training groups were performed aerobic exercise on lane and water for three sessions per week with 65-75 percent of maximum heart rate. At the end of the training period, again, the blood sampling were repeated. For the statically analysis, ANOVA test was used, and for significant variables Bunferroni post hoc was used. Results: Results showed significant difference in the level of OHdG, 8-isoprostane and total antioxidant capacity between trained groups and the control group after the training period (p <0.004, p <0.002, respectively). There was no significant difference between training groups in all variables (p <0.734). In general, the results showed that moderate aerobic exercise in water and land can decrease oxidative stress induced damage and increase antioxidant system capacity.

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