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Feedforward postural control in individuals with multiple sclerosis during load release.

Vennila Krishnan1, Neeta Kanekar, Alexander S Aruin

  • 1Department of Physical Therapy, University of Illinois at Chicago, IL 60612, USA.

Gait & Posture
|April 10, 2012
PubMed
Summary
This summary is machine-generated.

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Individuals with multiple sclerosis (MS) exhibit impaired anticipatory postural adjustments (APAs), showing reduced magnitude, delayed responses, and less center of pressure (COP) displacement during self-initiated balance tasks, impacting overall balance capacity.

Area of Science:

  • Neuroscience
  • Biomechanics
  • Rehabilitation Science

Background:

  • Multiple sclerosis (MS) is a central nervous system disorder affecting balance.
  • Anticipatory postural adjustments (APAs) are crucial for maintaining stability during voluntary movements.
  • Understanding APA organization in MS is vital for developing effective rehabilitation strategies.

Purpose of the Study:

  • To investigate the organization of anticipatory postural adjustments (APAs) in individuals with multiple sclerosis (MS).
  • To compare APA characteristics during self-initiated perturbation in the sagittal plane between individuals with MS and healthy controls.

Main Methods:

  • Eleven individuals with MS and eleven age- and gender-matched healthy controls participated.
  • Participants held a load and performed fast arm abduction movements to elicit self-initiated perturbation.

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  • Muscle electrical activity and center of pressure (COP) displacements were recorded.

    • Main Results:

    • Individuals with MS showed reduced magnitude of APAs compared to controls.
    • Delayed latency of APAs was observed in the MS group.
    • Smaller anticipatory COP displacement was noted in individuals with MS, indicating diminished balance capacity.

    Conclusions:

    • Individuals with MS exhibit significant impairments in anticipatory postural control.
    • These findings highlight underlying balance deficits in MS, even in mildly affected individuals.
    • The study provides a basis for developing targeted rehabilitation strategies to restore balance in MS patients.