Sarah A Welch1, Rachel E Ward2, Laura A Kurlinski3, Dan K Kiely4, Richard Goldstein5, Jessie VanSwearingen6, Jennifer S Brach7, Jonathan F Bean8. 1. Spaulding Rehabilitation Hospital and Department of PM&R, Harvard Medical School, Boston, MA; Spaulding Hospital Cambridge, 1575 Cambridge St., Cambridge, MA 02138(∗). Electronic address: sawelch@partners.org. 2. Spaulding Rehabilitation Hospital, Department of PM&R, Harvard Medical School, and Health and Disability Research Institute, Boston University School of Health, Boston, MA(†). 3. Spaulding Rehabilitation Hospital and Department of PM&R, Harvard Medical School, Boston, MA(‡). 4. Spaulding Rehabilitation Hospital, Boston, MA(§). 5. Spaulding Rehabilitation Hospital, Boston, MA(¶). 6. School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA(#). 7. School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA(∗∗). 8. New England Geriatric, Research, Education, and Clinical Center, Veterans Administration Boston Health System, Boston, MA; Spaulding Rehabilitation Hospital and Department of PM&R, Harvard Medical School, Boston, MA(††).
Abstract
BACKGROUND: Most falls among community-dwelling older adults occur while walking. Simple walking tests that require little resources and can be interpreted quickly are advocated as useful screening tools for fall prone patients. OBJECTIVE: To investigate 2 clinically feasible walking tests consisting of straight- and curved-path walking and examine their associations with history of previous falls and fall-related outcomes among community-living older adults. DESIGN: A cross-sectional analysis was performed on baseline data from a longitudinal cohort study. SETTING: Participants were recruited through primary care practices. PARTICIPANTS: Participants included 428 primary care patients ≥65 years of age at risk for mobility decline. Participants had a median age of 76.5 years, 67.8% were women, and 82.5% were white. METHODS: Straight-path walking performance was measured as the time needed to walk a 4-meter straight path at usual pace from standstill using a stopwatch (timed to 0.1 second). Curved-path walking performance was timed while participants walked from standstill in a figure-of-8 pattern around two cones placed 5 feet apart. MAIN OUTCOME MEASUREMENTS: Multivariable negative binomial regression analyses were performed to assess the relationship between straight-path walking or curved-path walking and self-reported history of number of falls. For fall-related injuries, and fall-related hospitalizations, logistic regression models were used. RESULTS: In the fully adjusted model, an increase of 1 second in straight path walking time was associated with 26% greater rate of falls (rate ratio 1.26, 95% confidence interval 1.10-1.45). An increase in curved-path walking time was associated with 8% greater rate of falls (rate ratio 1.08, 95% confidence interval = 1.03-1.14). Neither walk test was associated with history of fall-related injuries or hospitalizations. CONCLUSIONS: Poor performance on straight- and curved-path walking performance was associated with a history of greater fall rates in the previous year but not with a history of fall-related injuries or hospitalizations. This information helps inform how previous fall history is related to performance on walking tests in the primary care setting.
BACKGROUND: Most falls among community-dwelling older adults occur while walking. Simple walking tests that require little resources and can be interpreted quickly are advocated as useful screening tools for fall prone patients. OBJECTIVE: To investigate 2 clinically feasible walking tests consisting of straight- and curved-path walking and examine their associations with history of previous falls and fall-related outcomes among community-living older adults. DESIGN: A cross-sectional analysis was performed on baseline data from a longitudinal cohort study. SETTING:Participants were recruited through primary care practices. PARTICIPANTS: Participants included 428 primary care patients ≥65 years of age at risk for mobility decline. Participants had a median age of 76.5 years, 67.8% were women, and 82.5% were white. METHODS: Straight-path walking performance was measured as the time needed to walk a 4-meter straight path at usual pace from standstill using a stopwatch (timed to 0.1 second). Curved-path walking performance was timed while participants walked from standstill in a figure-of-8 pattern around two cones placed 5 feet apart. MAIN OUTCOME MEASUREMENTS: Multivariable negative binomial regression analyses were performed to assess the relationship between straight-path walking or curved-path walking and self-reported history of number of falls. For fall-related injuries, and fall-related hospitalizations, logistic regression models were used. RESULTS: In the fully adjusted model, an increase of 1 second in straight path walking time was associated with 26% greater rate of falls (rate ratio 1.26, 95% confidence interval 1.10-1.45). An increase in curved-path walking time was associated with 8% greater rate of falls (rate ratio 1.08, 95% confidence interval = 1.03-1.14). Neither walk test was associated with history of fall-related injuries or hospitalizations. CONCLUSIONS: Poor performance on straight- and curved-path walking performance was associated with a history of greater fall rates in the previous year but not with a history of fall-related injuries or hospitalizations. This information helps inform how previous fall history is related to performance on walking tests in the primary care setting.
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