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Related Experiment Video

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Quantification of postural stability in older adults using mobile technology.

Sarah J Ozinga1, Jay L Alberts

  • 1Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA, ozingas@ccf.org.

Experimental Brain Research
|August 25, 2014
PubMed
Summary

Mobile devices can accurately measure postural stability in older adults, offering a portable alternative to traditional biomechanical systems for assessing balance and fall risk.

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Area of Science:

  • Biomechanics
  • Gerontology
  • Wearable Technology

Background:

  • Traditional biomechanical systems for kinematic data capture reveal postural stability declines in older adults and neurological populations.
  • Advances in mobile device sensors offer potential for accessible biomechanical analysis and postural stability quantification.

Purpose of the Study:

  • To assess the quantity and quality of kinematic data from a mobile device for characterizing postural stability in older adults.
  • To validate mobile device measurements against a gold-standard 3D motion analysis system.

Main Methods:

  • Twelve healthy older adults performed six balance tasks under varied conditions (surface, stance, vision).
  • Simultaneous kinematic data were collected using a 3D motion analysis system and an iPad.
  • Correlation and mean absolute percentage error were used to compare data from both systems.

Main Results:

  • Significant correlations (r = 0.64-0.99) were found between iPad and motion analysis system across various kinematic outcome measures.
  • The iPad demonstrated an average error of 6-10% compared to the motion analysis system for linear and angular acceleration.
  • High accuracy suggests mobile device sensors are suitable for quantifying postural stability.

Conclusions:

  • Mobile devices provide accurate and reliable kinematic data for assessing postural stability in older adults.
  • The portability and ease of use of mobile devices make them ideal for clinical settings lacking traditional biomechanical equipment.
  • This technology facilitates objective, accessible, and frequent monitoring of balance in older populations.