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What factors are associated with excess body weight in Australian secondary school students?

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journal contribution
posted on 20.02.2012, 00:00 authored by B C Morley, M L Scully, P H Niven, A D Okely, L A Baur, I S Pratt, M A Wakefield, Jo SalmonJo Salmon
OBJECTIVES: To examine the prevalence of overweight and obesity in Australian secondary school students and identify factors associated with excess adiposity. DESIGN, SETTING AND PARTICIPANTS: Cross-sectional survey of students aged 12-17 years (in school years 8-11) who completed the National Secondary Students' Diet and Activity survey in 2009-10, which included a web-based self-report questionnaire and height and weight measurements. MAIN OUTCOME MEASURES: Overweight and obesity based on international standard body mass index (BMI) cut-offs for children and adolescents. RESULTS: Data were analysed for 12 188 students. Just under one in four students were either overweight (18%) or obese (5%). After adjusting for demographic and health-behaviour characteristics, males were more likely than females to be overweight or obese (OR, 1.23; 95% CI, 1.07-1.40; P = 0.004), as were both low (OR, 1.67; 95% CI, 1.40-1.99; P < 0.001) and medium (OR, 1.33; 95% CI, 1.14-1.55; P < 0.001) socioeconomic position (SEP) students compared with high SEP students. Students engaging in low levels of physical activity (OR, 1.21; 95% CI, 1.08-1.36; P = 0.001), more time in small-screen recreation (OR, 1.18; 95% CI, 1.05-1.32; P = 0.005), and short sleep duration (OR, 1.22; 95% CI, 1.05-1.41; P = 0.008) also had higher odds of being overweight or obese. CONCLUSIONS: There is a need for interventions to reduce overweight and obesity during adolescence. Preventive measures should include a focus on facilitating physical activity and reducing sedentary behaviour, as well as promoting adequate sleep, particularly among young people from lower SEP neighbourhoods who appear to be most susceptible.

History

Journal

Medical journal of Australia

Volume

196

Issue

3

Pagination

189 - 192

Publisher

MJA Group

Location

Sydney, N.S.W.

eISSN

1326-5377

Language

eng

Publication classification

C Journal article; C1.1 Refereed article in a scholarly journal

Copyright notice

[2012, MJA Group]