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Abstract
Conclusions: Improvement in sleep, emotional distress, and health-related quality-of-life (QoL) accompanied the improvement in dizziness symptoms after vestibular rehabilitation. Persistent sleep disturbance could prevent improvements in self-perceived handicap due to chronic dizziness and anxiety.
Objective: The present study investigated prospectively the effects of intervention for dizziness (vestibular rehabilitation) on sleep disturbance, and the relationship between improvements in dizziness symptoms and improvements in sleep disturbance after the intervention.
Methods: The participants of this study were 127 chronic dizziness inpatients with comorbid sleep disturbance (Pittsburgh sleep quality index [PSQI-J] global score ≥6). Participants completed the Dizziness Handicap Inventory (DHI, three sub-scales: Physical, Emotional, and Functional), PSQI-J, Hospital Anxiety and Depression Scale (HADS), and SF-8 (health-related QoL), and underwent gravity center fluctuation measurement before (time 1) and 1 month after (time 2) an in-hospital rehabilitation program.
Results: All measured variables were significantly improved at time 2, compared to time 1. At time 2, 80.31% of patients still reported sleep disturbance. Analysis of covariance showed that chronic dizziness patients with sleep disturbance at time 2 had significantly higher DHI total, DHI-physical, and HADS-anxiety scores at time 2 than patients without sleep disturbance at time 2, after adjusting for these scores at time 1.
Acknowledgement
The part of this study was supported by a grant from the Mental Health Okamoto Memorial Foundation 2016.
Disclosure statement
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.