Late Chronotype Is Associated With Dizziness and Postural Instability

Area of Science:

• Chronobiology
• Sleep Medicine
• Neurology

Background:

• Sleep patterns are associated with dizziness.
• Chronotype, an indicator of circadian rhythm timing, has not been extensively studied in relation to dizziness.
• Understanding this link may offer insights into persistent dizziness.

Purpose of the Study:

• To investigate the association between chronotype and the occurrence of dizziness.
• To explore the relationship between chronotype and specific dizziness symptom profiles.

Main Methods:

• Utilized data from 3766 participants in the Korea National Health and Nutrition Examination Survey (2021).
• Classified participants into early, intermediate, and late sleep groups based on sleep midpoint (MSFsc).
• Performed multivariable analysis to assess the association between sleep groups and dizziness prevalence.

Main Results:

• The late sleep group showed a significantly higher prevalence of recurrent dizziness, postural instability, and chronic dizziness compared to the intermediate sleep group.
• Late sleepers also had a higher prevalence of recurrent and chronic dizziness compared to early sleepers.
• These findings indicate a significant association between late sleep chronotypes and various dizziness symptoms.

Conclusions:

• Late sleep chronotype is significantly associated with increased prevalence of dizziness, particularly recurrent and chronic dizziness, and postural instability.
• This association suggests a potential role for chronotype in the development or persistence of dizziness.
• Further research is warranted to establish causality and explore therapeutic interventions.