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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The effect of endurance training on the relationships between sex hormone binding globulin, high density lipoprotein cholesterol, apoprotein A1 and physical fitness in pre-menopausal women with mild obesity.

The purpose of the present study was to investigate the relationships of change in high density lipoprotein cholesterol (HDL-C) with changes in sex hormone binding globulin (SHBG), physical fitness and spontaneous dietary intake before and after endurance training. Ten pre-menopausal obese women (32 to 49 years) who had never smoked or regularly drunk alcohol participated in this study. Physical training at an intensity of lactate threshold was performed for six months at a frequency of three times per week for 60 minutes using a cycle ergometer. Together with a reduction in body weight (-4.1 kg; P < 0.05) and with increases in maximal oxygen uptake (VO2max = +3.4 ml/kg/min or +0.09 l/min; P < 0.05), the training induced some changes in both plasma lipid and lipoprotein. Although the total cholesterol (total-C), triglyceride, HDL2-C and apoprotein A1 (Apo A1) levels did not change, significant increases in HDL-C and HDL3-C, and significant reductions in Apo B, total-C/HDL-C ratio and fasting insulin concentrations were found after training. SHBG levels tended to increase after endurance training, but the changes were not significant. No alteration was observed in spontaneous dietary intake after training. A significant correlation (r = 0.648) was observed between the change in VO2 max(l/min) and the change in SHBG. In addition, changes in both VO2 max(l/min) and SHBG were significantly associated with changes in HDL-C, HDL2-C and Apo A1. The changes in dietary intake did not correlate with the changes in SHBG, VO2max, HDL-C, HDL2-C and Apo A1.(ABSTRACT TRUNCATED AT 250 WORDS)[1]


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