Objective: The principal objectives of this study were to investigate relationships between objective sleep parameters, that is, sleep onset latency, wake after sleep onset, number of awakenings, sleep efficiency, and sleep duration, and quality of life after mild to moderate stroke.Methods: The subjects were 112 first-time mild to moderate stroke patients admitted to a rehabilitation unit. Physical functions, depression, anxiety, quality of life, subjective insomnia, quality of sleep, and fatigue were assessed at about 20 days after stroke. Objective sleep parameters were also assessed using a wrist-worn Actiwatch.Results: Patients with insomnia had greater sleep onset latencies (p = .001), wake after sleep onset (p = .005), awoke more frequently (p = .013), and slept less efficiency (p < .001) than patients without insomnia, but total sleep durations were similar. In all participants, lower overall domain of quality of life was significantly associated with sleep onset latency (p = .009), and total insomnia severity index (p < .001), total Epworth Sleepiness Scale (p < .001), the National Institute's Health Stroke Scale (p = .004), the Modified Barthel Index (p = .034), and Screening Tests for Aphasia and Neurologic-Communication Disorders (p = .044) scores.Conclusion: Objective sleep parameters (sleep onset latency and sleep efficiency) were found to be associated with quality of life during the early stage of rehabilitation in mild to moderate stroke patients.
Keywords: Actiwatch2; Objective sleep parameters; insomnia; quality of life; rehabilitation; stroke.