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Main Article Content
Effect of physical activity on body water in sedentary young underweight and obese women
Abstract
The purpose of the present study was to examine the effect of a walking exercise on body water in order to restore body water and reduction dehydration among sedentary obese and thin women. Forty young untrained girls between the age of 20-25 years (obese n=20, BMI>30 and thin n=20, BMI <20) volunteered to participate in this study. Participants were randomly assigned to two exercises (obese=10, thin=10) and two control (obese=10, thin=10) groups matched by BMI. DXA was used to measure each subject's body water, percentage body fat and lean mass. Serum estrogen level by radioimmunoassay (RIA) was assessed. Each walking session was 30 min long at an intensity corresponding to 50-75% of maximal age adjusted heart rate, 3 days per week for 2 months. Percent body fat and lean mass were affected positively by exercise program (all p = 0.000) and significant change was observed in Serum estrogen and body water in both exercise group (p<0.05). In conclusion the study demonstrated that 30 minutes walking exercise (i.e. exercise training) improved adaptation of body fluids in both obese and thin sedentary women.
Keywords: walking exercise, body water, obese and thin women
