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Related Experiment Video

Updated: May 8, 2026

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

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults

Published on: November 7, 2014

Performance variance on walking while talking tasks: theory, findings, and clinical implications.

Roee Holtzer1, Cuiling Wang, Joe Verghese

  • 1Ferkauf Graduate School of Psychology, Yeshiva University, New York, NY, USA, roee.holtzer@einstein.yu.edu.

Age (Dordrecht, Netherlands)
|August 15, 2013
PubMed
Summary

Dual-tasking costs in older adults are influenced by hazard estimation and postural reserve. Higher hazard estimation protects gait speed and cognitive accuracy, while poor postural reserve affects gait speed but not cognition.

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Area of Science:

  • Gerontology
  • Neuroscience
  • Biomechanics

Background:

  • Dual-tasking, combining walking with cognitive tasks, is vital for assessing mobility in older adults.
  • Understanding factors influencing dual-task performance costs is crucial for effective interventions.
  • Current knowledge on moderators of dual-task costs in older adults remains limited.

Purpose of the Study:

  • To investigate the moderating effects of postural reserve and hazard estimate on dual-task performance costs.
  • To analyze how gait abnormalities and executive functions impact dual-task performance in non-demented older adults.

Main Methods:

  • 285 non-demented older adults (mean age 76.9 years) participated.
  • Postural reserve was assessed by the presence of clinical gait abnormalities.

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Last Updated: May 8, 2026

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

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults

Published on: November 7, 2014

Lower Limb Biomechanical Analysis of Healthy Participants
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Lower Limb Biomechanical Analysis of Healthy Participants

Published on: April 15, 2020

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Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

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  • Hazard estimate was determined using executive function measures.
  • Dual-task costs were analyzed using a walking while talking paradigm and linear mixed-effects models.

    • Main Results:

    • Significant dual-task costs were observed for both gait speed and cognitive accuracy.
    • Higher hazard estimate demonstrated a protective effect, reducing declines in gait speed and cognitive accuracy.
    • Poor postural reserve was linked to reduced gait speed decline but did not significantly moderate cognitive accuracy decline.

    Conclusions:

    • Hazard estimate and postural reserve are significant moderators of dual-task costs in older adults.
    • These findings can enhance mobility risk assessment and inform interventions for individuals with cognitive and movement disorders.
    • Future research should explore these constructs further to optimize mobility interventions.