Relationship of Fitness, Fatness, and Coronary-Heart-Disease Risk Factors in 12- to 13-Year-Olds

in Pediatric Exercise Science
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The purpose of this study was to examine relationships between aerobic fitness (AF), fatness, and coronary-heart-disease (CHD) risk factors in 12- to 13-year-olds. The data were obtained from 208 schoolchildren (100 boys; 108 girls) ages 12.9 ± 0.3 years. Measurements included AF, indices of obesity, blood pressure, blood lipids and lipoproteins, fibrinogen, homocysteine, and C-reactive protein. An inverse relationship was found between AF and fatness (p < .05). Fatness was related to a greater number of CHD risk factors than fitness was (p < .05). Further analysis revealed fatness to be an independent predictor of triglyceride and blood-pressure levels (p < .05). Our findings indicate that, for young people, fatness rather than fitness is independently related to CHD risk factors.

Thomas and Cooper are with the School of Sport, Physical Education and Recreation, University of Wales Institute, Cardiff, South Wales. Williams, Baker, and Davies are with the School of Applied Sciences, University of Glamorgan, Pontypridd, South Wales.