Acute effects of anaerobic exercise on bone turnover in healthy post-menopausal women.

Skeletal tissue is in a constant state of flux, remodelling itself to changing physical demands via the bone multicellular unit (BMU). At any one time there are approximately 2m BMUs active on the mature skeleton that individually remodel over a time-course of about 3 months. Physical activity is a known prophylactic to many bone disorders and can perturb the remodelling process, either mechanically1 or metabolically2. Using specific biochemical markers for bone resorption and renewal, this study sought to investigate whether acute (9 days) changes in bone turnover could be observed following a discrete anaerobic exercise challenge.