Related Experiment Videos
Physical exercise increases bone mineral density in postmenopausal women
S Shimegi1, M Yanagita, H Okano
1Institute of Endocrinology, Gunma University, Maebashi, Japan.
Endocrine Journal
|February 1, 1994
Summary
Regular physical exercise, like volleyball and jogging, helps maintain bone mineral density in postmenopausal women, particularly in weight-bearing areas. This exercise benefit is localized and does not counteract estrogen deficiency effects.
Area of Science:
- Bone Health and Endocrinology
- Gerontology and Exercise Science
Background:
- Postmenopausal osteoporosis is a significant health concern.
- Estrogen deficiency after menopause accelerates bone loss.
- The role of physical activity in mitigating bone loss requires further investigation.
Purpose of the Study:
- To investigate the efficacy of regular physical exercise in preventing postmenopausal osteoporosis.
- To compare bone mineral density (BMD) and hormonal profiles in physically active versus sedentary postmenopausal women.
Main Methods:
- Compared BMD at the lumbar spine, proximal femur, and radius in volleyball players, joggers, and controls.
- Measured serum estradiol (E2), parathyroid hormone (PTH), and calcitonin levels.
- Assessed osteocalcin levels using enzyme immunoassay.
Main Results:
- Higher lumbar spine BMD was observed in volleyball players and joggers compared to controls (P < 0.01).
- Joggers exhibited significantly lower PTH levels than controls.
- No significant differences in radius BMD were found, but it correlated negatively with years post-menopause in active groups.
Conclusions:
- Regular physical exercise positively impacts bone mineral maintenance in postmenopausal women.
- The protective effect of exercise is localized to skeletal sites utilized during the activity.
- Exercise benefits do not override systemic estrogen deficiency effects on bone.