Cross-Sectional Associations of 24-Hour Sedentary Time, Physical Activity, and Sleep Duration Compositions with Sleep Quality and Habits in Preschoolers

Christine W. St. Laurent, Sarah Burkart, Katrina Rodheim, Robert Marcotte and Rebecca M. C. Spencer
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Christine W. St. Laurent: Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, MA 01003, USA
Sarah Burkart: Department of Exercise Science, University of South Carolina, Columbia, SC 29208, USA
Katrina Rodheim: Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, MA 01003, USA
Robert Marcotte: Department of Kinesiology, University of Massachusetts, Amherst, MA 01003, USA
Rebecca M. C. Spencer: Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, MA 01003, USA

IJERPH, 2020, vol. 17, issue 19, 1-13

Abstract: Although some studies indicate physical activity and sleep quality are positively associated in children, most reports examined physical activity independent of other 24-h behaviors and focused on older children. The aim of this cross-sectional study was to examine the predicted changes in sleep efficiency and habits when reallocating time between movement behaviors using compositional isotemporal substitution in preschool-aged children. Accelerometers were worn by 288 participants (51.6 ± 9.5 months) for up to 16 days. Sleep outcomes included sleep efficiency, nap frequency, sleep disturbances, and bedtime resistance. Compositional isotemporal substitution analyses demonstrated that the combined effect of 24-h movement behaviors was associated with sleep efficiency ( p < 0.001) and nap frequency ( p < 0.003). When sleep increased by 30 min at the expense of stationary time or light physical activity, estimates of sleep efficiency and bedtime resistance decreased while nap frequency increased. When stationary time increased by 30 min from moderate to vigorous physical activity, estimated sleep efficiency increased and sleep disturbances decreased. Although this study presents preliminary evidence that 24-h movement behavior compositions in early childhood are associated with sleep quality and nap frequency, estimated effects from theoretical time reallocations across sleep outcomes were mixed.

Keywords: time-use; 24-h activity cycle; children; sleep; physical activity; sedentary behavior (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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