Associations between sleep duration, sedentary time, physical activity, and health indicators among Canadian children and youth using compositional analyses

Abstract

Abstract:The purpose of this study was to examine the relationships between movement behaviours (sleep duration, sedentary time, physical activity) and health indicators in a representative sample of children and youth using compositional analyses. Cross-sectional findings are based on 4169 children and youth (aged 6-17 years) from cycles 1 to 3 of the Canadian Health Measures Survey. Sedentary time (SB), light-intensity physical activity (LPA), and moderate-to vigorous-intensity physical activity (MVPA) were accelerometer-derived. Sleep duration was subjectively measured. Body mass index z scores, waist circumference, blood pressure, behavioural strengths and difficulties, and aerobic fitness were measured in the full sample. Triglycerides, high-density lipoprotein-cholesterol, C-reactive protein, and insulin were measured in a fasting subsample. The composition of movement behaviours was entered into linear regression models via an isometric log ratio transformation and was found to be associated with all health indicators (p < 0.01). Relative to other movement behaviours, time spent in SB or LPA was positively associated (p < 0.04) and time spent in MVPA or sleep was negatively associated (p < 0.02) with obesity risk markers. Similarly, LPA was positively associated (p < 0.005) and sleep was negatively associated (p < 0.03) with unfavourable behavioural strengths and difficulties scores and systolic blood pressure. Relative to other movement behaviours, time spent in SB was negatively associated (p < 0.001) and time spent in MVPA (p < 0.001) was positively associated with aerobic fitness. Likewise, MVPA was also negatively associated with several cardiometabolic risk markers (p < 0.008). Compositional data analyses provide novel insights into collective health implications of 24-h movement behaviours and can facilitate interesting avenues for future investigations.Key words: physical activity, sedentary behaviour, sleep, obesity, fitness, metabolic syndrome, cardiovascular disease, compositional analysis, children, youth.Résumé : Cette étude a pour objectif d'analyser la relation entre les comportements kinésiques (durée du sommeil, temps sédentaire, activité physique) et les indicateurs de santé dans un échantillon représentatif d'enfants et de jeunes en utilisant des analyses compositionnelles. Ces observations transversales sont basées sur 4169 enfants et jeunes (conclusions transversales sont basées sur 4169 enfants et les jeunes (âgés de 6-17 ans) des cycles 1 à 3 de l'Enquête canadienne sur les mesures de la santé. Le temps de sédentarité (« SB »), l'activité physique d'intensité légère (« LPA ») et l'activité physique d'intensité modérée à vigoureuse (« MVPA ») sont des mesures provenant d'accéléromètres. La durée du sommeil est mesurée subjectivement. Chez tous les jeunes, on mesure la cote z de l'indice de masse corporelle, le tour de taille, la pression sanguine, les forces et les faiblesses comportementales et la condition physique aérobie. Dans un sous-échantillon à jeun, on mesure les triglycérid...

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