Abstract
Objective: The study was conducted to determine the effect of light therapy on the sleep quality of older adults. Design: This interventional study was conducted with a single group pre-test, post-test model. Setting: The study was conducted in a nursing home in Ankara, Turkey. Subjects: Twenty-four older adults with poor sleep quality were included in the study. Intervention: During the study procedure, a 10,000 Lux light was administered continuously for a half-hour duration in the morning over a one-month period. Main outcome measures: The main outcome measures included global and subcomponents of sleep quality, which were assessed by the Pittsburgh Sleep Quality Index, and were repeatedly measured at the baseline, pre-intervention (four weeks at baseline), post-intervention (at the end of intervention/eight weeks at baseline), and follow-up (four weeks at intervention). Results: At the end of light therapy intervention and during the four-week follow-up period, the global sleep quality scores were found to be higher compared with pre-intervention and baseline scores (p < 0.001). The ‘daytime dysfunction’ and ‘sleep latency’ sub-scores were found to be the most positively changed, whereas the change in ‘duration of sleep’ sub-score was less. Conclusion: Light therapy has been shown to be effective non-pharmacological therapy for improving sleep quality amonghealthy elders.
Published Version
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