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Cross-sectional Association between Walking Pace and Sleep-disordered Breathing.

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Area of Science:

  • Cardiovascular Health
  • Sleep Medicine
  • Gerontology

Background:

  • Sleep-disordered breathing (SDB) is a significant comorbidity associated with various health conditions, notably stroke.
  • Current screening methods for SDB rely on traditional risk factors like obesity and sex.
  • The potential role of gait parameters, specifically walking speed, in SDB screening remains largely unexplored.

Purpose of the Study:

  • To investigate the cross-sectional association between self-reported walking pace and the prevalence of sleep-disordered breathing.
  • To determine if walking speed can serve as an independent screening indicator for SDB.
  • To analyze these associations within a diverse, population-level cohort.

Main Methods:

  • Utilized data from the Multi-Ethnic Study of Atherosclerosis, including 2912 men and 3213 women aged 46-87.
  • Categorized walking pace into 'slow' (<0.89 m/s) and 'average/brisk' (≥0.89 m/s) based on validated thresholds.
  • Employed multivariable-adjusted models to assess risk differences and risk ratios for SDB indicators associated with walking pace.

Main Results:

  • A slow walking pace (26.9% of the sample) was associated with increased prevalence of sleep apnoea, self-reported apnoeas, loud snoring, and daytime tiredness.
  • Multivariable-adjusted analysis showed a 1.5 times higher risk of sleep apnoea for slower walkers compared to faster walkers.
  • These associations were consistent across sexes and independent of other common screening factors.

Conclusions:

  • Slower walking speed is significantly associated with a higher prevalence of sleep-disordered breathing.
  • Walking pace emerges as a potential, simple, and independent factor for SDB screening.
  • Incorporating a walking speed assessment could enhance the early identification of individuals with SDB.