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Related Experiment Video

Updated: Mar 25, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Sleep-disordered breathing and daytime postural stability.

Francis Degache1, Yannick Goy2, Sopharat Vat3

  • 1Department of Health Research, University of Health Sciences, University of Applied Sciences and Arts Western Switzerland, Lausanne, Switzerland Department of Physiology, GRISSUL (Group of Research of Institute of Sports Sciences), University of Lausanne, Lausanne, Switzerland.

Thorax
|February 20, 2016
PubMed
Summary
This summary is machine-generated.

Sleep-disordered breathing (SDB) significantly impairs daytime postural stability. This is linked to reduced oxygen levels and breathing disruptions during sleep, affecting balance control.

Keywords:
Sleep apnoea

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Biomechanics

Background:

  • Postural stability relies on integrated sensory information (visual, proprioceptive, vestibular) coordinated by the central nervous system.
  • Sleep deprivation is known to negatively impact postural control.
  • Sleep-disordered breathing (SDB) represents a significant disruption to sleep quality and physiology.

Purpose of the Study:

  • To investigate the impact of sleep-disordered breathing (SDB) on objective measures of daytime postural stability.
  • To determine if SDB severity correlates with deficits in postural control.

Main Methods:

  • 158 subjects suspected of SDB underwent overnight polysomnography.
  • Postural stability was assessed using a posturographic platform measuring center of pressure (CoP) oscillations.
  • Key metrics included CoP displacement (X, Y axes), mean speed, and length as function of surface (LFS) ratio.

Main Results:

  • Subjects with an apnea-hypopnea index (AHI) >5/h exhibited significantly increased LFS (+21%), XY length (+23%), and mean speed (+23%) compared to those with AHI <5/h.
  • Multivariate regression revealed a positive association between SDB severity parameters (mean SpO2, AHI, oxygen desaturation index, % time with SpO2 <90%) and impaired postural stability outcomes, even after controlling for age, BMI, and sleepiness.
  • These associations remained significant (p<0.05).

Conclusions:

  • Sleep-disordered breathing severity is demonstrably linked to compromised daytime postural stability.
  • Mean nocturnal oxygen saturation (SpO2) is a critical factor associated with these postural deficits.
  • Findings highlight the importance of addressing SDB for maintaining balance and preventing falls.