Objective: Assess the effectiveness of selected yoga postures in raising bone mineral density (BMD). Methods: Ten-year study of 741 Internet-recruited volun-teers comparing preyoga BMD changes with postyoga BMD changes. Outcome Measures: Dual-energy x-ray absorptiometric scans. Optional radiographs of hips and spine and bone quality study (7 Tesla). Results: Bone mineral density improved in spine, hips, and femur of the 227 moderately and fully compliant patients. Monthly gain in BMD was signifi cant in spine (0.0029 g/cm 2 , P = .005) and femur (0.00022 g/cm 2 , P = .053), but in 1 cohort, although mean gain in hip BMD was 50%, large individual differences raised the confi dence interval and the gain was not signifi cant for total hip (0.000357 g/cm 2). No yoga-related serious injuries were imaged or reported. Bone quality appeared qualitatively improved in yoga practitioners. Conclusion: Yoga appears to raise BMD in the spine and the femur safely.
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