Abstract
Summary
The main objective of this study was to explore whether vertebral fracture characteristics or posture is independently associated with physical performance. Posture was significantly associated with physical performance but fracture characteristics were not, suggesting posture should be the focus of physical performance variance.
Purpose
The main objective of this study was to explore whether vertebral fracture characteristics (number, severity, location) or occiput-to-wall distance (OWD) is independently associated with physical performance.
Methods
This was a secondary data analysis using baseline data from a randomized controlled trial, of community-dwelling women aged 65 years and older with a suspected vertebral fragility fracture. Lateral thoracic and lumbar spine radiographs were used to determine the number, location, and severity of fracture. The dependent variables were timed up and go (TUG), five times sit-to-stand, four-meter walk, and step test. The independent variables were number, severity, location of fracture, and OWD. Pain during movement and age were covariates. Multivariable regression analyses determined the association between each of the dependent and independent variables.
Results
Participants’ (n = 158) mean (standard deviation [SD]) age was 75.9 (6.5) years. They had a mean (SD) BMI, OWD, and number of fractures of 26.7 (5.3) kg/m2, 5.7 (4.6) cm, and 2.2 (1.8), respectively. OWD was independently associated with TUG (estimated coefficient [B] = 0.29, 95% confidence interval [CI] = 0.16, 0.42), five times sit-to-stand (B = 0.33, 95% CI = 0.12, 0.55), four-meter walk (B = 0.09, 95% CI = 0.05, 0.13), and step test (B = − 0.36, 95% CI = − 0.50, − 0.23) in the unadjusted model. OWD was independently associated with TUG (B = 0.25, 95% CI = 0.12, 0.38), five times sit-to-stand (B = 0.29, 95% CI = 0.07, 0.50), four-meter walk (B = 0.08, 95% CI = 0.03, 0.12), and step test (B = − 0.22, 95% CI = − 0.47, − 0.19) in the adjusted model.
Conclusion
OWD was significantly associated with physical performance but fracture characteristics were not. These analyses were exploratory and require replication in future studies.
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Funding
The research was funded by a CIHR Operating grant (MOP: 123445). Dr. Giangregorio received funding from an Ontario Ministry of Health Research and Innovation- Early Researcher Award, CIHR New Investigator Award, the Canadian Foundation for Innovation, and the Bloomberg Manulife Prize. Dr. Ashe acknowledges the support of the Canada Research Chairs program. Dr. Cheung is supported by a Tier 1 CRC in Musculoskeletal and Postmenopausal Health as well as the Lillian Love Chair in Women’s Health at the University of Toronto and University Health Network. Dr. Gibbs received funding from a CIHR Fellowship Award.
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Christina M.D. Ziebart, Jonathan D. Adachi, Maureen C. Ashe, Robert R. Bleakney, Angela M. Cheung, Jenna C. Gibbs, Keith D. Hill, David L. Kendler, Aliya A. Khan, Sandra Kim, Caitlin McArthur, Nicole Mittmann, Alexandra Papaioannou, Sadhana Prasad, Samuel C. Scherer, Lehana Thabane, John D. Wark, and Lora M. Giangregorio have all provided meaningful contributions to this manuscript.
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Ziebart, C., Gibbs, J.C., McArthur, C. et al. Are osteoporotic vertebral fractures or forward head posture associated with performance-based measures of balance and mobility?. Arch Osteoporos 14, 67 (2019). https://doi.org/10.1007/s11657-019-0626-x
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DOI: https://doi.org/10.1007/s11657-019-0626-x