Cognitive performance in adolescents with Delayed Sleep-Wake Phase Disorder: Treatment effects and a comparison with good sleepers.
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| Title: | Cognitive performance in adolescents with Delayed Sleep-Wake Phase Disorder: Treatment effects and a comparison with good sleepers. |
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| Authors: | Richardson, C.1, Micic, G.1, Cain, N.1, Bartel, K.1, Maddock, B.1, Gradisar, M.1 michael.gradisar@flinders.edu.au |
| Source: | Journal of Adolescence. Jun2018, Vol. 65, p72-84. 13p. |
| Subject Terms: | *Short-term memory, *Evaluation research, *Exercise, *Fatigue (Physiology), *Research methodology, *Research, *Comparative studies, *Cognition, Cognition in adolescence, Sleep-wake cycle, Treatment effectiveness, Mild cognitive impairment, Phototherapy, Neuropsychological tests |
| Geographic Terms: | Australia |
| Abstract: | The present study aimed to investigate whether Australian adolescents with Delayed Sleep-Wake Phase Disorder have impaired cognitive performance and whether chronobiological treatment for Delayed Sleep-Wake Phase Disorder improves adolescents' sleep, daytime functioning and cognitive performance. Adolescents with Delayed Sleep-Wake Phase Disorder (mean = 15.68 ± 2.1 y, 62% f) reported significantly later sleep timing (d = 1.03-1.45), less total sleep time (d = 0.82) and greater daytime sleepiness (d = 2.66), fatigue (d = 0.63) and impairment (d = 2.41), compared to good sleeping adolescents (mean = 15.9 ± 2.4 y, 75% f). However, there were no significant between-group differences (all p > 0.05) in performance on the Operation Span (ηp2 = 0.043), Digit Span (forwards: ηp2 = 0.002, backwards: ηp2 = 0.003), Letter Number Sequencing (ηp2 < 0.001) (working memory) and Digit-Symbol Substitution Tasks (ηp2 = 0.010) (processing speed). Adolescents with Delayed Sleep-Wake Phase Disorder went on to receive 3 weeks of light therapy. At 3 months post-treatment, adolescents with Delayed Sleep-Wake Phase Disorder reported significantly advanced sleep timing (d = 0.56-0.65), greater total sleep time (d = 0.52) and improved daytime sleepiness (d = 1.33), fatigue (d = 0.84) and impairment (d = 0.78). Performance on the Operation Span (d = 0.46), Letter Number Sequencing (d = 0.45) and Digit-Symbol Substitution tasks (d = 0.57) also significantly improved. [ABSTRACT FROM AUTHOR] |
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| Database: | Education Research Complete |
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