Abstract:

Purpose: This study w as carried out for determining the effect of 12-w eek aerobic exercise program upon bone mineral density BMD in pre-menopausal sedentary females. Methods: The study group included females w ho did not do sports regularly, did not have a special diet program and had no health problem. The participants w ere asked to administer a 30-minute run-w alk exercise program for 3 days a w eek during the 12w eek period. The intensity of the training w as determined to be 70% according to Karvonen method. Before and after the exercises, L1-L4 w as measured at T and Z score in lumbar spine, and neck, trochanter, and total BMD, calcium, phosphor, alkaline phosphatase, estradiol and parathyroid hormones w ere measured at T and Z score in femur neck. Wilcoxon signed ranked test w as performed for comparing the pre-test and post-test values of the participants. Results: Age, height and w eight averages of the participants n=18 w ere determined to be 44.33±2.08 years, 155.83±4.38 cm and 75.44±7.76 kg, respectively. At the end of the study, a significant increase w as determined at L1-L4 T and Z score , calcium and phosphor values in lumbar spine p0.05 . Conclusion: In conclusion, it w as possible to consider that pre-menopausal regular and long-term medium-severity aerobic exercises decreased the risk for postmenopausal osteoporosis and depending fracture formation, and w ere efficient on protecting BMD

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