Cognitive training improves sleep quality and cognitive function among older adults with insomnia

Study Objectives: To investigate the effect of an eight-week, home-based, personalized, computerized cognitive training program on sleep quality and cognitive performance among older adults with insomnia. Design: Participants (n = 51) were randomly allocated to a cognitive training group (n = 34) or to an active control group (n = 17). The participants in the cognitive training group completed an eight-week, home-based, personalized, computerized cognitive training program, while the participants in the active control group completed an eight-week, home-based program involving computerized tasks that do not engage high-level cognitive functioning. Before and after training, all participants ’ sleep was monitored for one week by an actigraph and their cognitive performance was evaluated. Setting: Community setting: residential sleep/performance testing facility. Participants: Fifty-one older adults with insomnia (aged 65–85). Interventions: Eight weeks of computerized cognitive training for older adults with insomnia. Results: Mixed models for repeated measures analysis showed between-group improvements for the cognitive training group on both sleep quality (sleep onset latency and sleep efficiency) and cognitive performance (avoiding distractions, working memory, visual memory, general memory and naming). Hierarchical linear regressions analysis in the cognitive training group indicated that improved visual scanning is associated with earlier advent of sleep, while improved naming i