| Abstrakt: |
COOK. T. C. R. E. LAPORTE, R. A. WASHBURN, N. D. TRAVEN. C. W. SLEMENDA. and K. F. METZ. Chronic low level physical activity as a determinant of high density lipoprotein cholesterol and subfractions. Med. Sci. Sports Exerc.,Vol. 18, No. 6, pp. 653–657, 1986. Physical activity has been associated with reduced risk of coronary heart disease. A mechanism for the reduced risk may be through increased high density lipoprotein cholesterol (HDL-C) and subfractions, in particular HDL2-C. Research associated with increased physical activity investigating HLD-C have assessed the effects of intense aerobic activity. The current research evaluated the relationship between low intensity, long duration activity to HDL-C and subfractions in 35 active postal carriers. Measurements of physical activity via the Large Scale Integrated monitor and reported miles walked, and lipoproteins were assessed at 3-month intervals over a 1-year period. Reported miles walked/day (5.3) was significantly correlated with HLD2-C (r= 0.50, P = 0.003) and approached significance for HDL-C (r= 0.29, P = O.06). The Large Scale Integrated measures were correlated with HDL-C (r= 0.44, P= 0.O08) and HDL2-C (r= 0.44, P = 0.007). Controlling for either age, alcohol consumption, body mass index, or leisure time activity did not reduce the relationship between reported miles walked or Large Scale Integrated readings and HDL2-C, suggesting that the increased HDL-C was the result of long duration, low intensity physical activity. |
