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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
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Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
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Related Experiment Video

Updated: Jun 24, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
14:52

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Published on: December 11, 2013

Compromising postural balance in the elderly.

Jaap Swanenburg1, Eling D de Bruin, Daniel Uebelhart

  • 1Department of Rheumatology and Institute of Physical Medicine, University Hospital Zurich, Zurich, Switzerland. jaap.swanenburg@usz.ch

Gerontology
|April 15, 2009
PubMed
Summary

Dual tasking with vocal articulation and attention significantly impairs postural control in elderly individuals. A counting backwards aloud task most effectively disrupted balance, suggesting its use in clinical assessments for at-risk populations.

Related Experiment Videos

Last Updated: Jun 24, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
14:52

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Published on: December 11, 2013

Area of Science:

  • Gerontology
  • Biomechanics
  • Cognitive Neuroscience

Background:

  • Standing postural control is crucial for elderly individuals.
  • Additional motor or cognitive tasks can disturb postural control.
  • The impact of different dual-task types on elderly balance remains unclear.

Purpose of the Study:

  • To investigate whether dual tasking compromises postural control in the elderly.
  • To differentiate the effects of vocal articulation versus attentional demands on balance.
  • To identify which dual-task paradigm most significantly affects postural control in older adults.

Main Methods:

  • 39 elderly participants (mean age 81 years) stood on a force plate.
  • Seven balance variables were measured, including sway path and medial-lateral/anterior-posterior displacement.
  • Tasks included quiet standing, vocal articulation, and attention-demanding tasks, with and without vision.

Main Results:

  • Additional tasks significantly affected postural control variables (PL, ML, SDML, AP, AoE, V).
  • In a vision condition, the 'counting backwards aloud' task significantly worsened balance compared to no task.
  • No significant differences in balance were observed between tasks when vision was excluded.

Conclusions:

  • Combined articulation and attention-demanding tasks significantly challenge the attentional system in the elderly.
  • The 'counting backwards aloud' task effectively disturbs postural control and may be a valuable clinical tool.
  • This dual-task paradigm can aid in assessing balance in elderly individuals at risk of falls.