Chronic Low Quality Sleep Impairs Postural Control in Healthy Adults
Fabianne Furtado1,2, Bruno da Silva B Gonçalves3, Isabela Lopes Laguardia Abranches2
1Department of Mechatronics, Escola Politécnica, University of Sao Paulo, São Paulo, Brazil.
Plos One
|October 13, 2016
Summary
Chronic poor sleep quality significantly impairs postural control, especially when vision is limited. This finding highlights the impact of insufficient sleep on balance and coordination in daily life.
Area of Science:
- Neuroscience
- Sleep Science
- Biomechanics
Background:
- Sleep deprivation is a growing societal issue linked to workload and stress.
- While acute sleep deprivation effects on postural control are studied, chronic deficits remain under-analyzed.
Purpose of the Study:
- To investigate the impact of chronic sleep deficits (quantity and quality) on postural control.
- To correlate sleep and circadian rhythm variables with postural control performance.
Main Methods:
- Thirty healthy adults underwent wrist actigraphy for over a week to assess sleep and circadian rhythms (L5).
- Postural control was evaluated using the Biodex Balance System, with tests divided into static and dynamic conditions.
- Cluster analysis grouped participants based on L5 values (low vs. high) to compare sleep quality groups.
Main Results:
- Poorer sleep quality, indicated by higher wake after sleep onset (WASO) and lower sleep efficiency, correlated with specific rhythm variables (L5).
- Individuals with worse sleep quality exhibited significantly poorer postural control, particularly in tests requiring visual input (eyes closed).
- The negative impact of vision impairment on balance was more pronounced in those with chronic sleep inefficiency.
Conclusions:
- Chronic poor sleep quality detrimentally affects postural control, comparable to total sleep deprivation.
- Maintaining adequate sleep is crucial for preserving balance and sensory integration, especially under challenging visual conditions.
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