The proposed study is be a randomized, double-blind, placebo-controlled trial of supplementation with oral vitamin D3.
Each subject will take a once-weekly capsule containing vitamin D3 or a an identical-appearing placebo for a treatment period of 15 weeks.
Subjects will be assessed for Bone pain and tenderness, Neuromuscular function, physical performance score, and Quality of life assessment.
A subset of subjects will have bone biopsies performed before and after intervention.
