Liu-Ambrose

and colleagues[17] highlighted an increase in cortical volumetric bone mineral density (CovBMD) at the radius after 6 months of twice per week resistance training in women 75–85 years of age. While other three times per week Compound Library RT studies in older adults [18, 19] noted significant differences at the distal and midtibia after 12 months, these adaptations were maintained after 1 year following the end of the intervention [20]. Very few studies have compared the effect of different frequencies of RT on bone mass, and to our knowledge, none of them have investigated the effect of RT frequency on CovBMD, total area (ToA), or bone strength. Although current studies provide a general agreement that

exercise has bone health benefits, there remains a great opportunity to refine RT for older adults. Therefore, the primary objective of this analysis was to determine the effect of three different RT frequencies (0, 1, and 2 times per week) on tibial CovBMD in healthy, community-dwelling postmenopausal women aged 65–75 years of age. Our secondary objective was to investigate the effect of RT frequency on ToA and tibial bone strength in older women. Methods The Brain Power Study was a 1-year parallel group randomized controlled trial (RCT) for community-dwelling women aged 65–75 years, and the primary outcome was executive function Selleck Inhibitor Library [21] (Clinical Registration Number:

NCT00426881). The present study was an evaluation of the bone health outcomes. We included community-dwelling women aged 65–75 years of age and excluded women who (1) had a history of neurodegenerative disease and/or stroke, (2) were taking psychotropic drugs or antidepressants within the previous 6 months, (3) were taking cholinesterase inhibitors within the previous 12 months, (4) were on MK 8931 mw estrogen replacement therapy within the previous 12 months, (5) did not speak or understand English, and/or (6) were unable to attend assessments and the intervention L-gulonolactone oxidase at our research center. The local university and hospital ethics review boards approved this study, and all eligible participants gave an informed, written consent prior to participation in the study. We recruited participants through newspaper advertisements, television and radio features, and the provincial physiotherapy professional association. Three hundred and forty-six women were screened and eligible to attend information sessions, after which 155 women were enrolled and assessed. Of the 155 women who were assessed and randomized, 147 women completed the assessment for the bone measures using pQCT at some point during the study (consort flow diagram Fig. 1). Fig. 1 Study flow chart that includes data from the larger trial and the subgroup analysis of bone health outcomes.