Abstract
Physical activity plays an important role on children with obesity. This study evaluated the effects of plyometric training on the anthropometry, body composition, and the blood pressure (BP) and heart rate (HR) of boys with obesity. Boys aged 7 to 9 years old were divided in: non-trained (N.=12) and trained (N.=29). The plyometric training program consisted of jumps on nonconsecutive days for twelve weeks. Anthropometry and body composition, BP and HR were evaluated. BP, HR and rate-pressure product were recorded at rest and 2 minutes after the section. Two-way repeated factors ANOVA was used. Trained group had a reduction in skinfolds and an increase in free fat mass (within and between-groups) and a large effect size for most anthropometric and body composition variables. Late systolic response was reduced from 122±1.1 (immediately post-exercise at the first week) to 112±1.0 at the end of plyometric training period. Diastolic reduction was seen two minutes after each session of exercise (from 68±1.1 to 62±1.2). HR was reduced in response to plyometric training (108 bpm to 97 bpm). Our findings strengthen previous studies that suggest that intense exercise has significant adaptive effects on BP and HR.
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