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Public Health 2014 May 28, 2014 Tannis Erickson

A multilevel analysis examining the association between socio- ecological factors and physical activity in Interlake youth. Public Health 2014 May 28, 2014 Tannis Erickson. Goals. Determine: physical activity levels of Interlake youth i f these levels vary by gender or over time

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Public Health 2014 May 28, 2014 Tannis Erickson

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  1. A multilevel analysis examining the association between socio- ecological factors andphysical activity in Interlake youth Public Health 2014 May 28, 2014 Tannis Erickson

  2. Goals • Determine: • physical activity levels of Interlake youth • if these levels vary by gender or over time • the individual, social & environmental factors are associated with physical activity levels

  3. Study • Secondary analysis of school-based survey • Cross-sectional and longitudinal components • Youth Health Survey (YHS) in the Interlake RHA • 2005 n=5436 students in 42 schools • 2009 n=5275 students in 53 schools

  4. Measuring physical activity • Captured frequency, duration and level of physical activity • Converted into kilocalories per kilogram of body weight per day (KKD). • Daily KKD = (hours of moderate PA x 3 METS) + (hours of vigorous PA x 6 METS) divided by 7 days

  5. Ecological Model of Physical Activity

  6. Results – Physical activity levels 54%

  7. Results – Changes as students age

  8. Results – Univariate regression • Female: 0.66 (0.60,0.70) • Grade 12: 0.61 (0.53,0.71) • 3+hours sedentary time: 2.10(1.68,2.63) • Daily smoker: 0.81 (0.73,0.90) • Overweight/obese: 0.68 (0.62,0.74) • 7+ fruits/veggies: 2.57 (2.29,2.89)

  9. Modelling results • Highly associated with PA levels • sex, year, active transportation to school, healthy eating, body image and feeling close to people at school • Moderately associated with PA levels • Sedentary time, feelings of hopelessness, feeling safe at school and learning about the benefits of physical activity

  10. Modelling results • Surprising results: • positive association between sedentary behaviour and physical activity • the fact that grade, smoking, BMI and school level variables did not show a significant relationship with physical activity

  11. Strengths/Weaknesses

  12. Public health implications in-depth understanding of the factors that affect physical activity is an important aspect of improving overall health factors in all areas of the social ecological model of health behaviour need to be considered when developing health promotion programs key variables have significant impacts on the physical activity level of youth

  13. Knowledge added First study of its kind in Manitoba Results will have implications for all rural regions of the province Future development of policies, programs and interventions can greatly benefit from these and future results

  14. Thank-you

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