The proposed study has the following aims: (a) to assess the concomitant and longitudinal links between sleep and cognitive, behavioral and emotional functioning in kindergarten children; (b) to assess the immediate and the long-term effects of an intervention to promote healthy sleep habits (HSI) on the child's evolving sleep patterns, as well as on related cognitive, behavioral and health domains; (c) to assess the immediate and the long-term effects of an intervention deigned to promote healthy nutrition (HNI) on the eating habits of children, their weight and BMI measures (the comparison/control group) and (d) to assess the links between eating habits and sleep in kindergarten children. The main hypotheses of the proposed study are: (a) Shorter and more disrupted sleep would be concomitantly and longitudinally associated with compromised cognitive, emotional and behavioral functioning in kindergarten children; (b) In comparison to the HNI group, children in the HSI group will extend their total sleep time, improve their sleep quality and their sleep schedule will be more stable following the intervention; (c) improvement in sleep habits will be associated with improvement in cognitive, emotional and behavioral functioning; (d) in comparison to the HIS group, children in the HNI group will improve their eating habits, engage in more physical activities and better manage to achieve and maintain an age-appropriate body weight.
Age range
3 Years – 6 Years
Sex
ALL
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Change in actigraphic sleep quality (e.g., number of night-wakings, sleep efficiency) and sleep quantity measures
Timeframe: Baseline, 1 week post-intervention
Change in actigraphic sleep quality (e.g., number of night-wakings, sleep efficiency) and sleep quantity measures
Timeframe: Baseline, 6-month follow up
Change in actigraphic sleep quality (e.g., number of night-wakings, sleep efficiency) and sleep quantity measures
Timeframe: 1 week post-intervention, 6 month follow up
Change in parent reported sleep problems (BCSQ)
Timeframe: Baseline, 1 week post-intervention
Change in parent reported sleep problems (BCSQ)
Timeframe: baseline, 6 month follow up
Change in parent reported sleep problems (BCSQ)
Timeframe: 1 week post intervention, 6 month follow up
Change in parent reported child's sleeping and food consumption (derived from Daily sleep and nutrition logs)
Timeframe: Baseline, 1 week post intervention
Change in parent reported child's sleeping and food consumption (derived from Daily sleep and nutrition logs)
Timeframe: Baseline, 6 month follow up
Change in parent reported child's sleeping and food consumption (derived from Daily sleep and nutrition logs)
Timeframe: 1 week post intervention, 6 month follow up
Change in child reported sleep and eating problems
Timeframe: Baseline, 1 week post intervention
Change in child reported sleep and eating problems
Timeframe: Baseline, 6 month follow up
Change in child reported sleep and eating problems
Timeframe: 1 week post intervention, 6 month follow up
Change in parent reported nutrition habits of the child and family
Timeframe: Baseline, 1 week post intervention
Change in parent reported nutrition habits of the child and family
Timeframe: Baseline, 6 month follow up
Change in parent reported nutrition habits of the child and family
Timeframe: 1 week post intervention, 6 month follow up