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Related Experiment Videos

Isokinetic testing in young nonathletic able-bodied subjects.

J J Nicholas1, L R Robinson, A Logan

  • 1Division of Rehabilitation Medicine, School of Medicine, University of Pittsburgh, PA.

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

Isokinetic strength testing reveals that non-athletic men have greater peak torque than women. The endurance ratio in non-athletes is typically high, suggesting it may reflect athletic training levels.

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Area of Science:

  • Biomechanics
  • Human Physiology
  • Sports Medicine

Background:

  • Isokinetic strength testing is a standard method for evaluating athletic performance.
  • Establishing normative data for non-athletic populations is crucial for comparative analysis, especially for injured individuals.

Purpose of the Study:

  • To measure isokinetic strength parameters in a non-athletic, able-bodied population.
  • To establish baseline isokinetic strength data for comparison with non-athletic injured patients.
  • To investigate the utility of the endurance ratio in differentiating training status.

Main Methods:

  • A standard isokinetic testing protocol was applied to 16 women and 9 men (aged 20-30 years) with minimal athletic experience.
  • Isokinetic dynamometry was used to measure peak torque (as % body weight) and endurance ratio (ER) at 60 and 180 degrees/second.

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  • Continuous verbal encouragement was provided during testing.

    • Main Results:

    • Men exhibited statistically greater peak torque than women across most tested joints and speeds.
    • The endurance ratio (ER) rarely fell below 50%, with many subjects exceeding 100% (range 4%-171%).
    • Peak torques were lower, and ERs were higher compared to previously published data for athletes.

    Conclusions:

    • Normative isokinetic strength values for a non-athletic, working population need to be clearly defined.
    • The endurance ratio may serve as an indicator of athletic training or vigorous exercise participation.
    • Isokinetic testing results in non-athletes differ significantly from those in athletic populations.