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Related Experiment Video

Updated: May 29, 2026

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults
08:56

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults

Published on: November 7, 2014

Stride-time variability and sensorimotor cortical activation during walking.

Max J Kurz1, Tony W Wilson, David J Arpin

  • 1Department of Physical Therapy, Munroe-Meyer Institute, University of Nebraska Medical Center, Omaha, NE, USA. mkurz@unmc.edu

Neuroimage
|September 17, 2011
PubMed
Summary
This summary is machine-generated.

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Stride-time interval variations correlate with brain activity in motor cortices during walking. Increased oxygenated hemoglobin in specific brain areas during backward walking suggests greater neural demand for balance control.

Area of Science:

  • Neuroscience
  • Biomechanics
  • Motor Control

Background:

  • Stride-time interval variability is linked to walking balance control.
  • Medial sensorimotor cortex activation may reflect neural processing during gait.
  • Functional near-infrared spectroscopy (fNIRS) is a non-invasive tool for measuring cortical activity.

Purpose of the Study:

  • To investigate if medial sensorimotor cortex activation correlates with stride-time interval variations.
  • To compare brain activity and gait variability between forward and backward walking.

Main Methods:

  • Thirteen healthy adults walked forwards and backwards on a treadmill at 0.45 m/s.
  • Functional near-infrared spectroscopy (fNIRS) measured hemodynamic responses (oxyHb, deoxyHb) in sensorimotor areas.

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  • A footswitch system recorded stride-time intervals to quantify variability.

    • Main Results:

    • Backward walking showed increased oxygenated hemoglobin (oxyHb) in the supplementary motor area, pre-central gyrus, and superior parietal lobule compared to forward walking.
    • Backward walking also exhibited a decrease in deoxygenated hemoglobin (deoxyHb) in the supplementary motor area.
    • Stride-time variability was greater during backward walking. Forward walking stride variability positively correlated with oxyHb in the pre-central gyrus and supplementary motor area.

    Conclusions:

    • Backward walking imposes a higher neural challenge on the sensorimotor cortex for gait regulation.
    • The positive correlation between stride-time variability and motor cortex activation during forward walking highlights the neural processing demands for temporal gait control.