Anette Harris1, Hilde Gundersen2, Pia Mørk-Andreassen3, Eirunn Thun4, Bjørn Bjorvatn5, Ståle Pallesen6. 1. Faculty of Psychology, University of Bergen, Norway. Electronic address: anette.harris@uib.no. 2. Department of Sport and Physical Education, Bergen University College, Norway. 3. The Norwegian Elite Sport Centre Region West, Norway. 4. Faculty of Psychology, University of Bergen, Norway. 5. Faculty of Medicine and Dentistry, University of Bergen, Norway; Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway. 6. Faculty of Psychology, University of Bergen, Norway; Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway.
Abstract
OBJECTIVES: The study aims to evaluate whether 4 weeks with restricted use of electronic media after 22:00 affects sleep, athletic performance, cognitive performance, and mood in high school athletes. METHODS:Eighty-five athletes were randomized to either an intervention group (n = 44), who was instructed to not use any electronic media after 22:00, or a control condition (n = 41), where they could act as they preferred in terms of media use. Primary outcomes were sleep habits measured with a sleep diary. Secondary outcomes were (a) physical performance measured with a set of standardized tests (beep test, 20-m linear sprint, chin-up test, hanging sit-ups test, counter movement jump and sit-n-reach test); (b) cognitive performance (response time and response accuracy); and (c) positive and negative affect. Differences between groups were tested with mixed between-within subject analyses of variance. RESULTS AND CONCLUSIONS: Thirty-five and 40 of the athletes in the intervention and control group, respectively, completed the study. Results showed that restricted use of electronic media after 22:00 did not improve sleep habits, athletic performance, cognitive performance, or mood in a group of high school top athletes with already good sleep habits. However, these findings give us knowledge about sleep habits and performance in this population that is of importance when designing future studies.
RCT Entities:
OBJECTIVES: The study aims to evaluate whether 4 weeks with restricted use of electronic media after 22:00 affects sleep, athletic performance, cognitive performance, and mood in high school athletes. METHODS: Eighty-five athletes were randomized to either an intervention group (n = 44), who was instructed to not use any electronic media after 22:00, or a control condition (n = 41), where they could act as they preferred in terms of media use. Primary outcomes were sleep habits measured with a sleep diary. Secondary outcomes were (a) physical performance measured with a set of standardized tests (beep test, 20-m linear sprint, chin-up test, hanging sit-ups test, counter movement jump and sit-n-reach test); (b) cognitive performance (response time and response accuracy); and (c) positive and negative affect. Differences between groups were tested with mixed between-within subject analyses of variance. RESULTS AND CONCLUSIONS: Thirty-five and 40 of the athletes in the intervention and control group, respectively, completed the study. Results showed that restricted use of electronic media after 22:00 did not improve sleep habits, athletic performance, cognitive performance, or mood in a group of high school top athletes with already good sleep habits. However, these findings give us knowledge about sleep habits and performance in this population that is of importance when designing future studies.
Authors: Lauren Hale; Gregory W Kirschen; Monique K LeBourgeois; Michael Gradisar; Michelle M Garrison; Hawley Montgomery-Downs; Howard Kirschen; Susan M McHale; Anne-Marie Chang; Orfeu M Buxton Journal: Child Adolesc Psychiatr Clin N Am Date: 2018-04
Authors: Stijn A A Massar; Xin Yu Chua; Chun Siong Soon; Alyssa S C Ng; Ju Lynn Ong; Nicholas I Y N Chee; Tih Shih Lee; Arko Ghosh; Michael W L Chee Journal: NPJ Digit Med Date: 2021-06-02