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Standardization of submaximal exercise tests.

R J Shephard, C Allen, A J Benade

    Bulletin of the World Health Organization
    |January 1, 1968
    PubMed
    Summary
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    Directly measuring maximum oxygen intake for cardiorespiratory fitness is difficult. The step test is recommended for field tests due to its practicality and low subject anxiety, with results extrapolated to estimate maximum oxygen intake.

    Area of Science:

    • Exercise Physiology
    • Cardiorespiratory Fitness Assessment

    Background:

    • Direct measurement of maximum oxygen intake (VO2 max) is often impractical.
    • Submaximal exercise tests are needed as alternatives for assessing cardiorespiratory fitness.
    • Standardization of submaximal exercise testing procedures is required.

    Purpose of the Study:

    • To compare various submaximal exercise tests for cardiorespiratory fitness assessment.
    • To identify the most suitable procedures for field and laboratory settings.
    • To evaluate extrapolation methods for predicting maximum oxygen intake from submaximal data.

    Main Methods:

    • Comparison of step, bicycle, and treadmill submaximal exercise tests.
    • Evaluation criteria included habituation, learning, physiological responses, and practical considerations.

    Related Experiment Videos

  • Assessment of four common extrapolation procedures for predicting VO2 max.

    • Main Results:

    • Treadmill tests showed limited utility for submaximal assessment.
    • Bicycle ergometry is suitable for laboratory tests but can induce anaerobic metabolism.
    • The step test is ideal for field use due to cost, portability, low anxiety, and ECG quality.
    • All tested extrapolation methods provided similar VO2 max predictions.
    • A single progressive step test yielded results comparable to discontinuous tests.

    Conclusions:

    • The step test is the preferred method for field-based cardiorespiratory fitness assessment.
    • Extrapolation of submaximal test results to predict maximum oxygen intake is effective.
    • Progressive testing protocols offer an efficient method for VO2 max prediction.