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Gait initiation in multiple sclerosis.

Jebb G Remelius1, Joseph Hamill, Jane Kent-Braun

  • 1Dept of Kinesiology, University of Massachusetts, Amherst, MA 01003, USA.

Motor Control
|May 17, 2008
PubMed
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Individuals with multiple sclerosis (MS) adopt a slower, safer strategy during gait initiation (GI) to improve balance. They reduce speed and maintain greater stability margins when starting to walk.

Area of Science:

  • Neurology
  • Biomechanics
  • Human Movement Science

Background:

  • Multiple sclerosis (MS) frequently impairs balance, particularly during dynamic activities like gait initiation (GI).
  • Understanding these balance deficits is crucial for developing targeted interventions.

Purpose of the Study:

  • To examine how MS-related balance impairments affect spatiotemporal variables, coordination, and stability margins during gait initiation.
  • To compare gait initiation in women with MS to a healthy control group.

Main Methods:

  • Twelve women with MS (mean EDSS=4.0) and 12 controls initiated gait at their preferred speed.
  • Analysis included spatiotemporal variables, center of mass (COM) and center of pressure (COP) displacements, and temporal margins of stability.

Related Experiment Videos

Main Results:

  • MS participants walked slower with smaller anterior COM displacements and longer GI duration.
  • They showed reduced posterior COP shift and longer dual support time, potentially linked to slower initiation velocity.
  • Coordination differed between AP and ML COP components, with increased temporal margins to posterior and lateral stability limits.

Conclusions:

  • MS participants utilize a functional strategy during preferred-speed gait initiation, characterized by reduced speed and greater proximity to stability boundaries.
  • This strategy prioritizes stability over speed, demonstrating an adaptive response to balance challenges in MS.