Associations of Usual Pace and Complex Task Gait Speeds With Incident Mobility Disability. Issue 10 (18th July 2019)
- Record Type:
- Journal Article
- Title:
- Associations of Usual Pace and Complex Task Gait Speeds With Incident Mobility Disability. Issue 10 (18th July 2019)
- Main Title:
- Associations of Usual Pace and Complex Task Gait Speeds With Incident Mobility Disability
- Authors:
- Rosso, Andrea L.
Metti, Andrea L.
Faulkner, Kimberly
Brach, Jennifer S.
Studenski, Stephanie A.
Redfern, Mark
Rosano, Caterina - Abstract:
- Abstract : BACKGROUND/OBJECTIVES: To assess whether gait speed under complex conditions predicts long‐term risk for mobility disability as well as or better than usual‐pace gait speed. DESIGN: Longitudinal cohort study. SETTING/PARTICIPANTS: Subsample of Health Aging and Body Composition study with follow‐up from 2002 to 2003 to 2010 to 2011, including 337 community‐dwelling adults (mean age = 78.5 years, 50.7% female, 26.1% black). MEASUREMENTS: Associations of gait speed measured under usual‐pace, fast‐pace, dual‐task, and narrow‐path conditions with mobility disability, defined by any self‐reported difficulty walking ¼ mile assessed annually, were tested by Cox proportional hazard models adjusted for demographic and health characteristics. Models were fitted for each walking condition, and R 2 statistics were used to compare predictive value across models. Models were repeated for persistent mobility disability, defined as at least two consecutive years of mobility disability. RESULTS: Mobility disability occurred in 204 (60.5%) participants over the 8‐year follow‐up. There was a lower hazard of developing mobility disability with faster gait speed under all conditions. Hazard ratios, confidence intervals, and R 2 of gait speed predicting mobility disability were similar across all four walking conditions ( R 2 range = 0.22‐0.27), but were strongest for dual‐task gait speed (hazard ratio [95% confidence interval], R 2 of fully adjusted models = 0.81 [0.75‐0.88], 0.27).Abstract : BACKGROUND/OBJECTIVES: To assess whether gait speed under complex conditions predicts long‐term risk for mobility disability as well as or better than usual‐pace gait speed. DESIGN: Longitudinal cohort study. SETTING/PARTICIPANTS: Subsample of Health Aging and Body Composition study with follow‐up from 2002 to 2003 to 2010 to 2011, including 337 community‐dwelling adults (mean age = 78.5 years, 50.7% female, 26.1% black). MEASUREMENTS: Associations of gait speed measured under usual‐pace, fast‐pace, dual‐task, and narrow‐path conditions with mobility disability, defined by any self‐reported difficulty walking ¼ mile assessed annually, were tested by Cox proportional hazard models adjusted for demographic and health characteristics. Models were fitted for each walking condition, and R 2 statistics were used to compare predictive value across models. Models were repeated for persistent mobility disability, defined as at least two consecutive years of mobility disability. RESULTS: Mobility disability occurred in 204 (60.5%) participants over the 8‐year follow‐up. There was a lower hazard of developing mobility disability with faster gait speed under all conditions. Hazard ratios, confidence intervals, and R 2 of gait speed predicting mobility disability were similar across all four walking conditions ( R 2 range = 0.22‐0.27), but were strongest for dual‐task gait speed (hazard ratio [95% confidence interval], R 2 of fully adjusted models = 0.81 [0.75‐0.88], 0.27). Results were comparable for persistent mobility disability ( R 2 range = 0.26‐0.28). CONCLUSION: Slower gait speed under both usual‐pace and complex conditions may be a clinical indicator of future risk of mobility disability. These results support the call for increased use of gait speed measures in routine geriatric care. J Am Geriatr Soc 67:2072–2076, 2019 … (more)
- Is Part Of:
- Journal of the American Geriatrics Society. Volume 67:Issue 10(2019)
- Journal:
- Journal of the American Geriatrics Society
- Issue:
- Volume 67:Issue 10(2019)
- Issue Display:
- Volume 67, Issue 10 (2019)
- Year:
- 2019
- Volume:
- 67
- Issue:
- 10
- Issue Sort Value:
- 2019-0067-0010-0000
- Page Start:
- 2072
- Page End:
- 2076
- Publication Date:
- 2019-07-18
- Subjects:
- dual task -- fast pace -- gait speed -- mobility disability
Geriatrics -- Periodicals
618.97 - Journal URLs:
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http://onlinelibrary.wiley.com/ ↗
http://firstsearch.oclc.org ↗
http://firstsearch.oclc.org/journal=0002-8614;screen=info;ECOIP ↗ - DOI:
- 10.1111/jgs.16049 ↗
- Languages:
- English
- ISSNs:
- 0002-8614
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- Legaldeposit
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