Browsing University of Waterloo by Author "Qian, W."
Now showing items 1-3 of 3
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Do school physical activity policies and programs have a role in decreasing multiple screen time behaviours among youth?
KATAPALLY, TARUN REDDY; Laxer, Rachel; Qian, Wei; Leatherdale, Scott T. (Elsevier, 2017-11-29)Screen time in youth has been associated with a wide range of poor health outcomes. Evidence indicates the need to develop physical activity (PA) school policies and programs that are aimed at decreasing youth screen time ... -
The longitudinal impact of diet, physical activity, sleep, and screen time on Canadian adolescents' academic achievement: An analysis from the COMPASS study
Faught, E.L.; Qian, W.; Carson, Valerie; Storey, K.E.; Faulkner, Guy; Veugelers, P.J.; Leatherdale, S.T. (Elsevier, 2019-08)Adequate amounts of physical activity, sleep, and screen time along with a healthy diet have been demonstrated to have positive associations with academic achievement. No longitudinal study has investigated the simultaneous ... -
School start time changes in the COMPASS study: associations with youth sleep duration, physical activity, and screen time
Patte, Karen A.; Qian, Wei; Cole, Adam G.; Faulkner, Guy; Chaput, Jean-Philippe; Carson, Valerie; Leatherdale, Scott T. (Elsevier, 2018-10-12)Background To date, no longitudinal population-based studies of school start times have been conducted within Canada. School schedule changes provided an opportunity to examine start times in association with youth sleep, ...