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Related Experiment Video

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Coordination between motor and cognitive tasks in dual task gait.

Nicholas J Smeeton1, James Wrightson2, Matyas Varga1

  • 1Sport and Exercise Science and Medicine Research Group, University of Brighton, UK.

Gait & Posture
|February 8, 2021
PubMed
Summary

Healthy adults coordinate cognitive tasks with gait phases during dual-task walking, especially when cognitive demands are high. This coordination varies among individuals and may help understand movement disorders.

Keywords:
BottleneckDivided attentionDual taskGaitSerial and parallel processingStride time variability

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Psychology

Background:

  • Dual-task (DT) paradigms assess motor processes in movement disorders.
  • The interaction between cognitive and motor processes during DT gait is not fully understood.

Purpose of the Study:

  • To examine within-stride interactions between cognitive and motor processes during dual-task gait in healthy young adults.
  • To determine if cognitive task processing capability influences gait coordination during DT.

Main Methods:

  • Nineteen healthy young adults performed a DT task involving treadmill walking and backward serial sevens.
  • Gait parameters were analyzed across six phases, comparing mid-verbalization (high cognitive load) with end-verbalization (low cognitive load) time points.

Main Results:

  • 10/19 and 9/19 participants demonstrated non-random verbalization timing relative to gait phases (p < 0.01).
  • Verbalization Coordinators showed longer verbalization response durations during high cognitive load, suggesting greater task difficulty.
  • No significant differences in verbalization response duration were found at low cognitive load.

Conclusions:

  • Cognitive processing is coordinated with gait phases in a subset of healthy young adults during DT gait.
  • High cognitive demands prompt coordination between cognitive processing and gait phases.
  • Within-stride coordination analysis may aid in studying conditions with gait and attention deficits.