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Cognitive demand and predictive adaptational responses in dynamic stability control.

Sebastian Bohm1, Falk Mersmann, Stefanie Bierbaum

  • 1Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Germany.

Journal of Biomechanics
|August 4, 2012
PubMed
Summary
This summary is machine-generated.

Cognitive load did not impair predictive motor control in young or old adults during gait perturbations. Elderly individuals under dual task conditions showed a trend towards predictive adjustments, possibly due to increased attention.

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Area of Science:

  • Biomechanics
  • Neuroscience
  • Gerontology

Background:

  • Predictive motor control is crucial for dynamic stability during gait.
  • Concurrent cognitive tasks can potentially affect motor control mechanisms.
  • Gait perturbations challenge the body's stability control systems.

Purpose of the Study:

  • To investigate the impact of a concurrent cognitive task on predictive motor control during disturbed gait.
  • To compare these effects in young and old adults.
  • To quantify predictive motor control using after-effects of gait perturbations.

Main Methods:

  • Participants (young and old adults) were assigned to control or dual-task groups.
  • Gait perturbations were induced by altering surface conditions.
  • Predictive motor control was assessed via margin of stability (MoS) changes after surface alterations.

Main Results:

  • Young adults significantly increased MoS after perturbations, unaffected by the dual task.
  • Older adults showed a trend towards increased MoS under dual-task conditions only.
  • Dual-tasking did not compromise predictive motor control in either age group.

Conclusions:

  • Concurrent cognitive load does not impair predictive motor control in young or old adults during disturbed walking.
  • Older adults in the dual-task group exhibited a trend for predictive adjustments, possibly linked to heightened attention.
  • These findings suggest cognitive demands do not necessarily hinder motor adaptation in gait.