Medicine and Health Sciences Commons^™

Examining Geographic Variation In Children's Perceived Barriers To Physical Activity And The Implications On Behaviour, Leah Gabrielle Taylor

Electronic Thesis and Dissertation Repository

Low levels of physical activity among Canadian children has become a national public health issue. Recent research has suggested that children’s physical activity levels are associated with their perceptions of their everyday environments. A better understanding of the formation of these perceptions within different contexts is needed to explain the extent of the relationship. Using a multi-tool quantitative protocol, this thesis examines geographic variation in socio-ecological factors influencing children’s perceptions of barriers to PA, and the extent to which perceptions mediate the relationship of the environment and PA. Results indicate that perceptions form within contexts, and have an influence on …

Assessing Physical Activity And Sedentary Time In The Early Years, Leigh M. Vanderloo

Electronic Thesis and Dissertation Repository

The overall purpose of this dissertation was to explore young children’s (18 months to 5 years) physical activity and sedentary time. Study 1 assessed the physical activity and sedentary time among a sample of toddlers from London, Canada using two data processing approaches. Study 2 explored the impact of three different early learning environments, and their respective characteristics (e.g., staff behaviours, equipment, sedentary opportunities, etc.), on preschoolers’ activity levels. Study 3 examined differences in two popular accelerometers used to measure young children’s physical activity and sedentary time to better understand measurement discrepancies.

Study 1 revealed that toddlers engaged in 37.27 …

The Influence Of The Childcare Environment On Physical Activity Among Preschool-Aged Children: A Feasibility Study, Leigh M. Vanderloo

Electronic Thesis and Dissertation Repository

This study sought to: (1) measure moderate-vigorous physical activity (PA) levels of a sample of preschoolers; (2) assess which attributes (e.g., space, equipment, policies) within centre-based childcare environments influence PA; and, (3) pilot the methodology to ensure the feasibility of undertaking a full-scale study. Thirty-one preschoolers from five childcare centres across London, Canada participated. Actical® accelerometers were worn by participants for one day during childcare hours to assess activity levels using a 15-second epoch length. The Environment and Policy Assessment and Observation instrument was used to conduct a full-day evaluation of the childcare environment. On average, participants engaged in 11.45 …