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Maximal exercise test results in subacute stroke.

Ada Tang1, Kathryn M Sibley, Scott G Thomas

  • 1Department of Physical Therapy, University of Toronto, ON, Canada.

Archives of Physical Medicine and Rehabilitation
|August 1, 2006
PubMed
Summary
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Graded maximal exercise testing is feasible in subacute stroke patients, but standard criteria for maximum oxygen consumption (Vo(2)max) are not always suitable. Practice trials improve results without meeting Vo(2)max criteria.

Area of Science:

  • Cardiovascular Physiology
  • Neurological Rehabilitation
  • Exercise Science

Background:

  • Assessing aerobic capacity is crucial for stroke rehabilitation.
  • Standardized methods for maximal exercise testing in early stroke are lacking.

Purpose of the Study:

  • To evaluate the feasibility and reliability of graded maximal exercise testing in subacute stroke.
  • To assess the suitability of standard maximum oxygen consumption (Vo(2)max) criteria.
  • To investigate trial-to-trial practice effects on Vo(2)max measurements.

Main Methods:

  • Descriptive, cross-sectional study involving 35 subacute stroke participants.
  • Graded maximal exercise testing using semirecumbent cycle ergometry.
  • Repeated testing in a subset (n=20) to assess reliability and practice effects.

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Main Results:

  • Exercise testing was feasible in 89% of participants.
  • Test-retest reliability was high (ICC range, .67-.87).
  • Repeated testing improved peak oxygen consumption (Vo(2)peak) and work rate, but not standard Vo(2)max criteria attainment.

Conclusions:

  • Maximal exercise testing is feasible in early stroke but standard Vo(2)max criteria may not be appropriate.
  • Practice trials enhance performance but do not necessarily lead to meeting formal Vo(2)max criteria.
  • Recommendations for aerobic capacity measurement guidelines in stroke rehabilitation are suggested.