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Related Experiment Videos

Improving the validity of clinical exercise testing: the relationship between practice and performance.

E Dean1, J Ross, J Bartz

  • 1School of Rehabilitation Medicine, University of British Columbia, Vancouver, Canada.

Archives of Physical Medicine and Rehabilitation
|August 1, 1989
PubMed
Summary

Standardized practice before treadmill exercise testing significantly lowers physiological responses like systolic blood pressure and rate pressure product. This indicates practice effects are crucial for accurate exercise test interpretation.

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Area of Science:

  • Exercise Physiology
  • Cardiovascular Response
  • Treadmill Testing

Background:

  • Exercise testing protocols often neglect the impact of practice.
  • Existing practice methods in studies are inconsistent.
  • Standardized practice effects on submaximal treadmill tests require investigation.

Purpose of the Study:

  • To evaluate the influence of two standardized practice sessions on physiological responses during a submaximal treadmill exercise test.
  • To compare the effects of practice versus no practice on heart rate, blood pressure, and perceived exertion.

Main Methods:

  • Twenty healthy men with no prior treadmill experience were assigned to a practice or control group.
  • Physiological variables including heart rate (HR), systolic blood pressure (SBP), rate pressure product (RPP), step cadence (CAD), and perceived exertion (PE) were measured.

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  • Data were collected at each workload during practice sessions and the subsequent exercise test.

    • Main Results:

    • The practice group exhibited systematically lower HR, SBP, RPP, CAD, and PE during the submaximal test compared to the control group.
    • SBP and RPP were significantly lower (p < 0.01) in the practice group.
    • Within the practice group, SBP and CAD were significantly higher during practice 1 than practice 2 and the test (p < 0.01).

    Conclusions:

    • Prior practice significantly attenuates physiological and perceptual responses to submaximal treadmill exercise.
    • Standardized practice protocols are essential for reliable and valid exercise test results.
    • These findings highlight the importance of accounting for practice effects in exercise testing research and practice.