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Related Experiment Videos

Evaluating and understanding performance testing in COPD patients.

W J Rejeski1, K O Foley, C M Woodard

  • 1Department of Health & Exercise Science, Wake Forest University, Winston-Salem, North Carolina 27109, USA.

Journal of Cardiopulmonary Rehabilitation
|April 14, 2000
PubMed
Summary

Physical performance tests are reliable for assessing function in chronic obstructive pulmonary disease (COPD) patients. Key factors like VO2peak and self-efficacy influence performance, guiding clinical understanding of physical decline.

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Area of Science:

  • Pulmonary Rehabilitation
  • Clinical Exercise Physiology
  • Geriatric Medicine

Background:

  • Growing interest in performance tests for assessing physical function in patients with chronic diseases.
  • Need to evaluate measurement properties of performance test batteries in specific patient populations.

Purpose of the Study:

  • Describe measurement properties of a performance test battery used in the Reconditioning Exercise and Chronic Obstructive Pulmonary Disease Trial.
  • Explore how selected physiologic and psychosocial measures explain performance test results.

Main Methods:

  • Assessed test-retest reliability of a 6-minute walk, timed stair climb, and timed elevated-arm task in older COPD patients (n=30).
  • Used stepwise regression analyses (n=209) to identify key physiologic and psychosocial predictors of task performance.

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Main Results:

  • All three performance tasks demonstrated good test-retest reliability (coefficients > 0.80).
  • Performance tests showed expected correlations with VO2peak, forced expiratory volume in 1 second (FEV1), and self-reported disability.
  • Regression models identified VO2peak, FEV1, self-efficacy, and self-reported disability as significant predictors of performance.

Conclusions:

  • The physical performance test battery is a reliable tool for assessing physical functioning in older adults with COPD.
  • VO2peak significantly impacts task performance.
  • Patient-reported perceptions are crucial for understanding physical decline in clinical contexts.