THE EFFECTS OF A FIVE WEEK PEDOMETER INTERVENTION ON BODY COMPOSITION MEASUREMENTS AND AEROBIC FITNESS
University of Wales Institute Cardiff
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The aim of the study was to examine the effect a five week pedometer intervention on anthropometric measurements such as skin calliper measurements, waist and hip measurements and aerobic fitness. Fifteen female students volunteered to participate in the study. Their mean (± s) age, body mass, height and body mass index were 20.8 ± 0.7 years, 70 ± 6 cm, 166 ± 4.3 cm and 25.4 ± 1.9 Kg.m2 respectively. Participants completed a three day baseline step log followed by a five week step log. Pre and post intervention measurements were completed. First a YMCA VO2 sub-maximal test and second skin calliper application on four points of the body, tricep, bicep, subscapual and suprailliac were taken to measure body fat percentage and sum of skinfold. The tests were repeated after the five week intervention. Over the five weeks there was a decrease in body mass, (-0.1kg) body fat percent (-0.9%), and waist circumference (-1.4 cm) albeit not significant. There was a statistical decrease in the sum of skinfold 63 ± 14.6 and 61 ± 14.2 mm (P<0.05). The results from the YMCA sub-maximal test show a decrease in aerobic fitness. The results of the study demonstrate that a five week pedometer intervention does not improve aerobic fitness but does decrease body fat percentage, waist circumference and sum of skinfolds overall changing the participant’s body composition. The study has health benefits, increasing physical activity reduces the risk of cardiovascular disease, lowers blood pressure and reduces the risk of developing type 2 diabetes.
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