This study assesses the association between the serum lipid and lipoprotein levels of 62 black children and 37 black adolescents and their reported levels of habitual physical activity, 24-hour dietary intake, and physical measurements. In the children physical activity was not correlated with serum lipid and lipoprotein levels. Indicators of physical activity had a positive correlation (P less than 0.02) with high-density-lipoprotein cholesterol and negative correlations (P less than 0.05) with the total serum cholesterol/high-density-lipoprotein cholesterol and low-density-lipoprotein cholesterol/high-density-lipoprotein cholesterol ratios in the adolescents. Subjects were stratified into "low activity" and "high activity" groups. High-activity subjects had lower (P less than 0.05) total serum cholesterol/high-density-lipoprotein cholesterol and low-density-lipoprotein cholesterol/high-density-lipoprotein cholesterol ratios than less active subjects. Subjects that ran track had lower (P less than 0.02) total serum cholesterol and low-density-lipoprotein cholesterol than non-track participants. The results suggest that increased habitual physical activity may have a favorable effect on serum lipid and lipoprotein levels in black adolescents.
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