Abstract:The objective of this systematic review was to examine the relationships between objectively and subjectively measured sleep duration and various health indicators in children and youth aged 5-17 years. Online databases were searched in January 2015 with no date or study design limits. Included studies were peer-reviewed and met the a priori-determined population (apparently healthy children and youth aged 5-17 years), intervention/exposure/comparator (various sleep durations), and outcome (adiposity, emotional regulation, cognition/academic achievement, quality of life/well-being, harms/injuries, and cardiometabolic biomarkers) criteria. Because of high levels of heterogeneity across studies, narrative syntheses were employed. A total of 141 articles (110 unique samples), including 592 215 unique participants from 40 different countries, met inclusion criteria. Overall, longer sleep duration was associated with lower adiposity indicators, better emotional regulation, better academic achievement, and better quality of life/well-being. The evidence was mixed and/or limited for the association between sleep duration and cognition, harms/injuries, and cardiometabolic biomarkers. The quality of evidence ranged from very low to high across study designs and health indicators. In conclusion, we confirmed previous investigations showing that shorter sleep duration is associated with adverse physical and mental health outcomes. However, the available evidence relies heavily on cross-sectional studies using self-reported sleep. To better inform contemporary sleep recommendations, there is a need for sleep restriction/extension interventions that examine the changes in different outcome measures against various amounts of objectively measured sleep to have a better sense of dose-response relationships.Key words: sleep duration, adiposity, body weight, emotional regulation, mental health, cognition, academic achievement, quality of life, well-being, injuries.Résumé : Cette analyse systématique a pour objectif d'examiner la relation entre la mesure objective et subjective de la durée du sommeil et d'autres indicateurs sanitaires chez des enfants et des jeunes âgés de 5 à 17 ans. En janvier 2015, une recherche est faite dans les bases de données en ligne sans contrainte de date et de devis utilisé. Les études retenues sont sanctionnées par des pairs et sont conformes aux critères a priori déterminés : la population (des jeunes apparemment en bonne santé âgés de 5 à 17 ans), l'intervention/exposition/comparaison (durées variées du sommeil) et le résultat (adiposité, contrôle des émotions, cognition/ rendement scolaire, qualité de vie/bien-être, préjudices/blessures et biomarqueurs cardiométaboliques). À cause du haut niveau d'hétérogénéité des études, on utilise des synthèses narratives. Au total, 141 articles (110 échantillons originaux) incluant 592 215 participants distincts de 40 pays différents sont conformes aux critères d'inclusion. Globalement, une plus longue durée de sommeil est associée aux indicateurs de ...
Highlights Many movement behavior characteristics were associated with cardiometabolic risk. Movement intensities were more consistently correlate with cardiometabolic risk. Higher physical activity intensities were the strongest correlates of risk.
BACKGROUND The COVID-19 pandemic yielded extraordinary stressors and well-being challenges for physicians. OBJECTIVE We sent light-touch SMS messages to improve well-being in Ontario physicians and sought to determine which types of messages were most effective. METHODS We conducted a randomized longitudinal study with three trial arms for comparison of changes. All residents and practicing physician members of the Ontario Medical Association with available mobile numbers were randomly assigned to a trial arm: messages with well-being resources, stories from fellow Ontario physicians, or combined resources and stories. Baseline and endline data were collected through online surveys primarily using the short Warwick-Edinburgh Mental Wellbeing Scale, with single-item ‘pulse surveys’ delivered via SMS weekly through the intervention. RESULTS 3,356 and 1,230 participants completed the baseline and endline surveys, respectively. Of these, 614 participants also completed the endline survey and were included in our analyses. There were no significant differences in well-being, happiness, anxiety, life satisfaction, or worthwhileness across treatment groups, nor in how helpful participants found the messages. Participants in the resources-only trial arm were more likely (p=0.036) to report reading the messages compared to members in other groups. CONCLUSIONS Texts with stories from peer physicians and referral to well-being resources alone or in combination were not superior to each other in improving physicians’ well-being. Our findings support the notion that interventions focused on individual physicians alone are unlikely to address poor well-being and burnout among physicians. Further research is needed on the use of digital-based interventions in relation to well-being and burnout, particularly as health human resource well-being and sustainability are key to post-pandemic recovery efforts. CLINICALTRIAL ClinicalTrials.gov NCT04803812
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