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The purpose of this study was to investigate the changes of serum lipids through long-term aerobic conditioning in middle-aged women. Of the 17 house-wife subjects, 8 subjects (40-57 years: Group A) w...ere participate in the aerobic conditioning program over the 4 years. The remaining 9 subjects (36-59 years: Group B) who were participated in this program for one year, were followed up for 15 and 38 months after their retirement. The aerobic conditioning program consisted of aerobic dance (35-15 minutes) and stretch exercise (15-20 minutes), respectively, two times per week. Fasting blood samples, collected 7 times for Group A and 5 times for Group B for the 4-years, were assayed for serum total cholesterol (T-ch), high density lipoprotein cholesterol (HDL-ch), Triglyceride (TG). Total lipids (T-lipid). There were no significant differences in any serum lipids between the both groups. T-ch was gradually increased and HDL-ch was gradually decreased in the course of years. Thus, HDL/T-ch ratio was increased in the course of years. No significant changes occurred for TG and T-lipids. The results of T-ch, HDL-ch and HDL/T-ch ratio conflict with those reported in many short-term training experiments. These discrepancies were probably due to the fact that the most of subjects in this study was pre-and/or post-monopausal status. Because, it is a well known fact that T-ch and HDL-ch are influenced by the menopause. Therefore, it is our conclusion that the results obtained from the short-term training experiments and younger subjects on serum lipids were not true for all, especially in middle-aged women.続きを見る
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