Both Resistance and Agility Training Increase Cortical Bone Density in 75- to 85-Year-Old Women With Low Bone Mass: A 6-Month Randomized Controlled Trial

Liu-Ambrose, Teresa Y.L., Khan , Karim M., Eng, Janice J., Heinonen, Ari and McKay, Heather A. (2004) Both Resistance and Agility Training Increase Cortical Bone Density in 75- to 85-Year-Old Women With Low Bone Mass: A 6-Month Randomized Controlled Trial. Journal of Clinical Densitometry, 7 4: 390-398. doi:10.1385/JCD:7:4:390


Author Liu-Ambrose, Teresa Y.L.
Khan , Karim M.
Eng, Janice J.
Heinonen, Ari
McKay, Heather A.
Title Both Resistance and Agility Training Increase Cortical Bone Density in 75- to 85-Year-Old Women With Low Bone Mass: A 6-Month Randomized Controlled Trial
Journal name Journal of Clinical Densitometry   Check publisher's open access policy
ISSN 1094-6950
Publication date 2004
Sub-type Article (original research)
DOI 10.1385/JCD:7:4:390
Volume 7
Issue 4
Start page 390
End page 398
Total pages 9
Place of publication U.S.A.
Publisher Elsevier
Language eng
Subject 1103 Clinical Sciences
Abstract A randomized, controlled, single-blinded 25-wk prospective study was conducted to compare the effects of group-based resistance and agility training on bone, as measured by both dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT), in older women with low bone mass. Ninety-eight community-dwelling women aged 75–85 yr were randomized to one of three experimental groups: resistance training (n = 32), agility training (n = 34), or stretching (sham exercise) (n = 32). Total hip, femoral neck, and trochanteric bone mineral density (BMD) were measured by DXA. Peripheral QCT measurements were performed at the tibia and radius. The pQCT outcome measures at the shaft regions were cortical bone content, cortical bone cross-sectional area, cortical bone density, and density-weighted polar section modulus (SSI). The pQCT outcome measures at the distal sites were total bone content, total bone cross-sectional area, and total bone density. At trial completion, the agility training group significantly increased cortical bone density by 0.5 ± 0.2% (SE) at the tibial shaft compared with a 0.4 ± 0.3% loss in the stretching group. The resistance training group significantly increased cortical bone density (1.4 ± 0.6%) at the radial shaft compared, with a 0.4 ± 0.5% loss in the agility training group. No significant between-group differences were observed in the other bone outcome measures (by DXA or pQCT). Future research is needed to determine the mechanism(s) responsible for the observed adaptation of the cortical bone to mechanical loading.
Keyword pQCT
cortical bone density
bone structure
exercise
aged
low bone mass
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Human Movement and Nutrition Sciences Publications
 
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Created: Mon, 09 Mar 2009, 16:43:27 EST by Ms Lynette Adams on behalf of School of Human Movement and Nutrition Sciences