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Related Experiment Video

Updated: Sep 5, 2025

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults
08:56

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Synchronization performance affects gait variability measures during cued walking.

S Jordão1, N Cortes2, J Gomes3

  • 1Neuromuscular Research Lab, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal; Hospital da Ordem Terceira Chiado, Lisbon, Portugal.

Gait & Posture
|July 12, 2022
PubMed
Summary
This summary is machine-generated.

Synchronization is key in cued gait training. Poor synchronization, especially at faster tempos, leads to random gait patterns, not the intended variability. Measuring synchronization is crucial for effective gait rehabilitation research.

Keywords:
AsynchroniesComplexityCueingFractalsSensorimotor synchronizationStrideto-stride fluctuations

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Area of Science:

  • Neuroscience
  • Biomechanical Engineering
  • Rehabilitation Science

Background:

  • Variability in gait rehabilitation is crucial for restoring function.
  • Successful gait rehabilitation relies on adequate synchronization, a parameter often unreported in cued gait training literature.

Purpose of the Study:

  • To investigate how changes in synchronization performance, under fractal-like and isochronous cueing, affect gait variability measures.
  • To determine the impact of cueing tempo on synchronization and gait variability.

Main Methods:

  • Twelve young male participants walked to isochronous (ISO) and fractal (FRC) cues at slow, normal, and fast tempos (six conditions total).
  • Synchronization performance (ASYNC) and gait variability (fractal scaling, coefficient of variation of inter-stride intervals) were measured.
  • Repeated measures ANOVA or Aligned Rank Transform analyzed differences in synchronization and gait variability.

Main Results:

  • Faster tempos significantly decreased synchronization performance (ASYNC) for both ISO and FRC cues.
  • Poor synchronization at faster tempos resulted in lower gait variability (more random gait patterns).
  • Observed gait patterns contradicted the hypothesis, showing increased randomness rather than structured variability with fractal cues when synchronization was poor.

Conclusions:

  • Synchronization performance is fundamental for interpreting the clinical effects of cued gait training.
  • Clinical research using fractal-like metronomes must account for synchronization to ensure expected gait patterns.
  • Randomized controlled trials in gait rehabilitation should incorporate measures of synchronization performance.