Predictors of gait speed in patients after hip fracture

• Published in: Physiotherapy Canada 2008, Vol.60 (1), p.10-18
• Main Authors: Kline Mangione, Kathleen, Craik, Rebecca L, Lopopolo, Rosalie, Tomlinson, James D, Brenneman, Susan K
• Format: Article
• Language: English
• ISSN: 0300-0508; 1708-8313
• DOI: 10.3138/physio/60/1/10

Following hip fracture, patients demonstrate greatly reduced walking speeds 1 year later compared with age-matched elders. The purpose of our study was to examine the factors that relate to gait speed in patients after hip fracture. Forty-two men and women (mean age 79 +/- 7.5 years) who sustained a hip fracture participated in this study. Linear regression analysis was used to determine a statistical model that best predicted gait speed, the dependent variable. Gait speed was measured with a computerized gait mat. The independent variables were age, sex, height, weight, time post-fracture, medications, mental status, depression, balance confidence, Medical Outcome Studies, Short Form (SF-36), balance, and lower extremity isometric force. All subjects were discharged from physical therapy services, and measurements were taken, on average, 17 weeks post-fracture. Using stepwise regression, 72% of the variance in gait speed was explained by summed lower extremity strength normalized by body weight, general health (SF-36), and balance confidence (Activities-specific Balance Confidence Scale). Impairments (summed lower extremity strength) and risk factors (perception of general health and balance confidence) are important predictors of gait speed in elders after hip fracture.