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Related Experiment Videos

Effect of aging on human postural control during cognitive tasks

K Barin1, G D Jefferson, P J Sparto

  • 1Department of Otolaryngology, Ohio State University, Columbus 43210, USA.

Biomedical Sciences Instrumentation
|January 1, 1997
PubMed
Summary

Aging and cognitive load impact balance control. Head extension significantly increased postural sway when proprioception was altered, suggesting complex sensorimotor interactions influence stability.

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Area of Science:

  • Human physiology
  • Neuroscience
  • Biomechanics

Background:

  • Postural control is crucial for stability and relies on sensorimotor and cognitive integration.
  • Aging can affect sensorimotor functions and cognitive abilities, potentially impacting balance.
  • Understanding these effects is vital for fall prevention and maintaining independence in older adults.

Purpose of the Study:

  • To investigate how aging affects human postural control during cognitive tasks.
  • To examine the interplay between sensory input manipulation, cognitive load, and age on balance.
  • To identify specific sensory conditions that exacerbate age-related postural control deficits.

Main Methods:

  • Utilized dynamic posturography (EquiTest) with 48 subjects (20-60 years).

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  • Assessed stability across six sensory conditions, systematically altering proprioceptive and visual inputs.
  • Included a head extension condition to modify vestibular input and cognitive tasks to vary attentional demands.

    • Main Results:

    • Head extension significantly increased postural sway, particularly when proprioceptive input was altered.
    • Cognitive tasking and age group differences showed trends towards significance but did not reach statistical significance.
    • Sensory modification, especially involving proprioception, was a key factor influencing postural sway.

    Conclusions:

    • Head extension and altered proprioception significantly impact postural sway, highlighting the importance of these sensory systems for balance.
    • While cognitive load and age showed trends, their significant impact on postural control under these specific conditions requires further investigation.
    • Future research should explore larger age ranges and more demanding cognitive tasks to fully elucidate age-related changes in postural control.