Effects of aerobic dance on physical work capacity, cardiovascular function and body composition of middle-aged women
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ABSTRACT:
The purpose of this study was to determine the effects of aerobic dance on physical work capacity, cardiovascular function and body composition of young middle-aged women. Maximal oxygen uptake (VO2 max), heart rate during submaximal treadmill walking, resting heart rate and blood pressure, and body composition were determined before and after a 10-week aerobic dance conditioning program in 28 women (18 experimental and 10 control), aged 25 to 44 years. Changes in the experimental group were significantly greater than in the control group for VO2 max expressed in 1.min-1 or relative to body weight or fat-free weight (5 to 7 per cent vs. minus 5 to minus 8 per cent), time on a continuous grade-incremental walking treadmill test (16 per cent vs. 1 per cent), heart rate during submaximal stages of the treadmill test (minus 9 per cent vs. 1 per cent) and resting heart rate (minus 8 per cent vs. 2 per cent). Resting systolic and diastolic blood pressure; body weight; percent fat, fat weight, and fat-free weight estimated using underwater weighing; sum of seven skinfolds; and sum of seven circumferences did not change significantly in either group. It was concluded that aerobic dance performed 30-45 min, 3 days.week-1 for 10 weeks significantly improves physical work capacity and cardiovascular function, but without dietary control, does not alter body composition in sedentary middle-aged women.
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