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Related Experiment Video

Updated: Jan 30, 2026

A Versatile Murine Model of Subcortical White Matter Stroke for the Study of Axonal Degeneration and White Matter Neurobiology
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Strength or Motor Control: What Matters in High-Functioning Stroke?

Neha Lodha1, Prakruti Patel1, Agostina Casamento-Moran2

  • 1Department of Health and Exercise Science, Colorado State University, Fort Collins, CO, United States.

Frontiers in Neurology
|January 29, 2019
PubMed
Summary
This summary is machine-generated.

Motor control impairments, not strength deficits, significantly impact walking and driving abilities in high-functioning stroke survivors. Improving motor control is key for better functional recovery after stroke.

Keywords:
ankle movementdrivingfunctional mobilityhemiparesislower limbmotor impairmentswalkingweakness

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Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Biomechanics

Background:

  • Stroke survivors often face motor impairments affecting daily activities.
  • High-functioning individuals with mild to moderate impairments require precise motor control for tasks like walking and driving.
  • Quantifying strength and motor control deficits is crucial for understanding functional limitations post-stroke.

Purpose of the Study:

  • To measure strength and motor control impairments in high-functioning stroke survivors.
  • To determine the contribution of these impairments to functional mobility.
  • To investigate the relationship between motor deficits and functional tasks like walking and simulated driving.

Main Methods:

  • Twenty-one high-functioning stroke survivors and 21 healthy controls performed ankle strength (maximum voluntary contractions) and motor control (visuomotor tracking) tasks.
  • Functional mobility was assessed via overground walking speed, stride length variability, and simulated driving braking reaction time.
  • Multiple linear regression analyzed the predictive power of strength and motor control on functional mobility outcomes.

Main Results:

  • Stroke survivors exhibited reduced plantarflexion strength, decreased motor accuracy, and increased movement variability compared to controls.
  • Functional deficits included slower walking speed, greater stride length variability, and longer braking reaction times in the stroke group.
  • Motor accuracy predicted walking speed and braking time; motor variability predicted stride length variability. Strength did not predict functional mobility.

Conclusions:

  • Motor control deficits, specifically accuracy and variability, are significant predictors of functional mobility impairments in high-functioning stroke survivors.
  • Muscle strength impairments do not appear to be the primary driver of functional limitations in this population.
  • Rehabilitation strategies focusing on enhancing motor control are recommended to improve functional outcomes for stroke survivors.