Document Type

Journal Article

Faculty

Faculty of Computing, Health and Science

School

School of Exercise and Health Sciences

RAS ID

12702

Comments

This article was originally published as: Turner, S., Torode, M., Climstein, M., Naughton, G., Greene, D., Baker, M. , & Fiatarone Singh, M. (2011). A Randomized Controlled Trial of Whole Body Vibration Exposure on Markers of Bone Turn-over in Postmenopausal Women. Journal of Osteoporosis, 2011(1), 10. Original article available here

Abstract

Purpose. To examine the effects of two doses of low-frequency (12 Hz), low-magnitude (0.3 g), whole body vibration on markers of bone formation and resorption in postmenopausal women. Methods. Women were recruited and randomized into a sham vibration control group, one time per week vibration group (1×/week), or three times per week vibration group (3×/week). Vibration exposure consisted of 20 minutes of intermittent vibration for the 1×/week and 3×/week groups, and sham vibration (<0.1 g) for the control group for eight weeks. Double-blinded primary outcome measures were urine markers of bone resorption: N-telopeptide X normalised to creatinine (NTx/Cr) and bone formation: bone-specific alkaline phosphatase (ALP). Results. Forty-six women (59.8 ± 6.2 years, median 7.3 years since menopause) were enrolled. NTx/Cr was significantly reduced (34.6%) in the 3×/wk vibration group but not in the 1×/wk vibration group compared with sham control (P<.01) group. No effect of time or group allocation was observed on the bone formation marker ALP (P=.27). Conclusion. We have shown for the first time that low-frequency, low-magnitude vibration 3×/week for eight weeks in postmenopausal women results in a significant reduction in NTx/Cr, a marker of bone resorption, when compared with sham vibration exposure.

 
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Link to publisher version (DOI)

10.4061/2011/710387