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Related Experiment Videos

Is the stepping test a specific indicator of vestibulospinal function?

C R Gordon1, W A Fletcher, G M Jones

  • 1Department of Clinical Neurosciences, University of Calgary, AB, Canada.

Neurology
|November 1, 1995
PubMed
Summary

Walking on a rotating treadmill caused subjects to turn afterward, even with eyes closed. This suggests the stepping test may not specifically indicate vestibulospinal function.

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Area of Science:

  • Vestibular Neuroscience
  • Human Locomotion

Background:

  • The stepping test is traditionally used to assess vestibulospinal function.
  • Previous research has not investigated the effects of prolonged, low-intensity circular motion on post-exercise postural control.

Purpose of the Study:

  • To investigate the impact of walking on a horizontally rotating circular treadmill on subsequent postural control during a stepping test.

Main Methods:

  • Seven healthy subjects walked for 2 hours on a circular treadmill with eyes open.
  • Following the treadmill exposure, subjects performed a stepping test with eyes closed, attempting to step in place without turning.

Main Results:

  • All subjects demonstrated a significant turning response in the direction of treadmill rotation after cessation of walking.

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  • Post-treadmill stepping velocities were markedly increased (207–880 deg/min) compared to pre-treadmill baseline.
  • Subjects reported no subjective sensation of motion relative to the ground or surrounding space.

    • Conclusions:

    • Prolonged walking on a rotating surface induces a post-exercise turning response.
    • The findings challenge the specificity of the stepping test as a sole indicator of vestibulospinal function.
    • Vestibulospinal system adaptation to sustained, low-intensity motion requires further investigation.