The purpose of the master's thesis was to determine the effect of water exercise and swimming on the aerobic and lung capacity of individuals with post-COVID-19 syndrome. The training period lasted for eight weeks, with sessions twice a week. Subjects were allowed to choose between swimming and water aerobics based on their swimming knowledge, ability, and readiness. Twenty-eight individuals were involved in the study to evaluate the effectiveness of water exercise on aerobic capacity. Of these, twenty subjects opted for the 6-minute walk test, and the remaining eight chose the 2-minute step-in-place test to assess aerobic capacity. Lung capacity was assessed using the spirometry method (MICRO, Vitalograph) to measure forced vital capacity (FVC) and forced expiratory volume in the first second (FEV1) for twenty-three subjects. Data from the initial and final testing was processed using the IBM SPSS Statistics software to calculate the normality of data distribution and identify potential statistically significant differences in test results. A paired t-test was used to assess the effects of aquatic exercise on aerobic capacity, FVC, and FEV1. The Pearson correlation coefficient was used to calculate the correlation between the 6-minute walk test and the spirometry test, and it was found that the eight-week exercise had a positive effect on aerobic capacity and FVC. It was noted that the correlation between the 6-minute walk test and FEV1 was measured but not between the 6-minute walk test and FVC. In conclusion, the study suggests that eight weeks of adapted exercise in water can be effective for individuals with post-COVID-19 syndrome.
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