Effects Of 12-week Of Biodensity Training On Bone Adaptations In Women

Osteoporosis is a major health issue in the United States, and exercise is a key lifestyle intervention for maintaining bone health. Research has shown that resistance training is an effective treatment for osteoporosis. bioDensity is a relatively new exercise device that was developed to stimulate bone formation through isometric exercise. PURPOSE: The study aims to examine the skeletal effects of 12 weeks of bioDensity training and compare its impact on young and older women. METHODS: Ten independent-living, postmenopausal women with osteopenia or osteoporosis (50-85 years old, older group) and sixteen healthy young women (18-30 years old, younger group) completed 12 weeks of supervised bioDensity training, once a week. The study required sixteen visits, including baseline assessments, bioDensity training sessions, and post-assessments. DXA scans were conducted to measure bone mineral density (BMD) at lumbar spine, dual femur and dual radii. Fasting blood samples were collected to measure bone biomarkers of serum sclerostin, Bone ALP, and TRAP5b levels at baseline and post-training. Mixed measure ANOVA was used to compare the effects of training and group on BMD and bone biomarkers. The effect size was reported as partial eta squared (η2). RESULTS: There were no significant changes in BMD and bone biomarkers in both younger and older groups after the training program, although there was a medium effect of time on lumbar spine BMD (η2 = .064). BMD at all sites was significantly greater in the younger group compared to the older group (p < .001). Sclerostin levels were significantly lower in the younger group (p < .001), and there was a significant time x group interaction in TRAP5b (p = .02). DISCUSSION: Our results showed that the 12-week bioDensity training did not result in significant bone adaptations in women. Future studies should consider increasing the frequency and duration of exercise and expanding the sample size to address the limitations of the study.