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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Balance performance in head-shake computerized dynamic posturography: aging effects and test-retest reliability.

Marco Y C Pang1, Freddy M Lam, Gary H Wong

  • 1Department of Rehabilitation Sciences, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong. Marco.Pang@inet.polyu.edu.hk

Physical Therapy
|December 15, 2010
PubMed
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The Head-Shake Sensory Organization Test (HS-SOT) effectively differentiates balance in healthy younger and older adults, showing good reliability for assessing balance changes.

Area of Science:

  • Human Movement Science
  • Gerontology
  • Biomedical Engineering

Background:

  • The Sensory Organization Test (SOT) has limitations in detecting subtle balance deficits.
  • The Head-Shake Sensory Organization Test (HS-SOT) was developed to enhance balance assessment.
  • Dynamic head movements are crucial for understanding balance control.

Purpose of the Study:

  • To investigate age-related differences in balance using the HS-SOT.
  • To determine the test-retest reliability of the HS-SOT in healthy young and older adults.

Main Methods:

  • A test-retest design was employed in this observational study.
  • Ninety-two healthy younger adults and 73 healthy older adults participated.
  • Participants completed both SOT and HS-SOT, with a subset reassessed 1-2 weeks later.

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Last Updated: Jun 6, 2026

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Main Results:

  • HS-SOT conditions with head movements yielded significantly lower equilibrium scores compared to standard SOT conditions.
  • Older adults demonstrated significantly poorer performance on HS-SOT conditions than younger adults.
  • HS-SOT showed good test-retest reliability (ICC [3,2] ranging from .55 to .85) with minimal detectable change values provided.

Conclusions:

  • Incorporating head movements into the SOT improves the ability to distinguish between healthy younger and older adults.
  • The HS-SOT demonstrates reliable performance and provides valuable minimal detectable change data for clinical balance studies.
  • Future research could explore other planes of head movement beyond horizontal rotation.