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American Journal of Physical Medicine & Rehabilitation:
Research Article: Aging

Why Do Older Adults Decide They Are Having Difficulty with a Task?

Gregory, Patricia C. MD; Fried, Linda P. MD, MPH

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Gregory PC, Fried LP: Why Do Older Adults Decide They Are Having Difficulty with a Task? Am J Phys Med Rehabil 2003;82:9–16.

Objective: Previous studies have identified risk factors for decline in physical function, but they have not examined specific reasons older adults report difficulty with mobility tasks.

Design: Community-dwelling people (n = 160) aged 59 yr and older in an observational cohort study were questioned to determine the most common cited reasons for self-reported difficulty in task performance.

Results: Mobility tasks were most often reported to be difficult (66%). The reasons cited for difficulty in low exercise tolerance tasks were task modification by method (33%) and rate (33%). For high exercise tolerance tasks, reasons cited included having to modify the rate of performing the task (20%) or the method (13%). Among those who reported difficulty with low exercise tolerance mobility tasks, >80% reported modification (odds ratio, 46.4 [95% confidence limits: 9.75, 220.51]) and 32% also report frequency change (odds ratio, 5.9 [95% confidence limits: 2.72, 12.85]) as the reason for perceiving difficulty. For those who reported difficulty performing high exercise tolerance–demanding tasks, >90% reported modification (odds ratio, 5.5 [95% confidence limits: 2.05, 14.88]) and 61% also report frequency changes (odds ratio, 3.9 [95% confidence limits: 1.93, 8.04]).

Conclusion: The findings suggest that people are able to cite specific reasons for difficulty with mobility task performance, most commonly related to task modification.

© 2003 Lippincott Williams & Wilkins, Inc.


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