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BMC Public Health

, 11:777

First Online: 10 October 2011Received: 23 June 2011Accepted: 10 October 2011DOI: 10.1186-1471-2458-11-777

Cite this article as: Toftager, M., Christiansen, L.B., Kristensen, P.L. et al. BMC Public Health 2011 11: 777. doi:10.1186-1471-2458-11-777

Abstract

BackgroundThe aim of the School site, Play Spot, Active transport, Club fitness and Environment SPACE Study was to develop, document, and assess a comprehensive intervention in local school districts that promote everyday physical activity PA among 11-15-year-old adolescents. The study is based on a social ecological framework, and is designed to implement organizational and structural changes in the physical environment.

Methods-designThe SPACE Study used a cluster randomized controlled study design. Twenty-one eligible schools in the Region of Southern Denmark were matched and randomized in seven pairs according to eight matching variables summarized in an audit tool crow-fly distance from residence to school for 5-6 graders; area household income; area education level; area ethnicity distribution; school district urbanity; condition and characteristics of school outdoor areas; school health policy; and active transport in the local area. Baseline measurements with accelerometers, questionnaires, diaries, and physical fitness tests were obtained in Spring 2010 in 5-6 grade in 7 intervention and 7 control schools, with follow-up measurements to be taken in Spring 2012 in 7-8 grade. The primary outcome measure is objective average daily physical activity and will be supported by analyses of time spent in moderate to vigorous activity and time spent sedentary. Other secondary outcome measures will be obtained, such as, overweight, physical fitness, active commuting to-from school and physical activity in recess periods.

DiscussionA total of 1348 adolescents in 5-6 grade in the Region of Southern Denmark participated at baseline n = 14 schools. The response rate was high in all type of measurements 72.6-97.4%. There were no significant differences between intervention and control groups at baseline according to selected background variables and outcome measures: gender p = .54, age p = .17, BMI p = .59, waist circumference p = .17, physical fitness p = .93, and physical activity accelerometer p = .09.

The randomization and matched pair design produced equivalent groups according to central outcome measures and background variables. The SPACE for physical activity Study will provide new insights on the effectiveness of multicomponent interventions to improve adolescents- physical activity level.

Trial registrationCurrent Controlled Trials ISRCTN79122411

Electronic supplementary materialThe online version of this article doi:10.1186-1471-2458-11-777 contains supplementary material, which is available to authorized users.

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Autor: Mette Toftager - Lars B Christiansen - Peter L Kristensen - Jens Troelsen

Fuente: https://link.springer.com/







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