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What helps children to move more at school recess and lunchtime? Mid-intervention results from Transform-Us! cluster-randomised controlled trial

Yildirim, Mine, Arundell, Lauren, Cerin, Ester, Carson, Valerie, Brown, Helen, Crawford, David, Hesketh, Kylie D., Ridgers, Nicola D., Te Velde, Saskia J., Chinapaw, Mai J. M. and Salmon, Jo 2014, What helps children to move more at school recess and lunchtime? Mid-intervention results from Transform-Us! cluster-randomised controlled trial, British journal of sports medicine, vol. 48, no. 3, pp. 271-277, doi: 10.1136/bjsports-2013-092466.

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Title What helps children to move more at school recess and lunchtime? Mid-intervention results from Transform-Us! cluster-randomised controlled trial
Author(s) Yildirim, Mine
Arundell, LaurenORCID iD for Arundell, Lauren orcid.org/0000-0002-8178-4104
Cerin, Ester
Carson, Valerie
Brown, HelenORCID iD for Brown, Helen orcid.org/0000-0002-5460-3654
Crawford, DavidORCID iD for Crawford, David orcid.org/0000-0002-2467-7556
Hesketh, Kylie D.ORCID iD for Hesketh, Kylie D. orcid.org/0000-0002-2702-7110
Ridgers, Nicola D.ORCID iD for Ridgers, Nicola D. orcid.org/0000-0001-5713-3515
Te Velde, Saskia J.
Chinapaw, Mai J. M.
Salmon, JoORCID iD for Salmon, Jo orcid.org/0000-0002-4734-6354
Journal name British journal of sports medicine
Volume number 48
Issue number 3
Start page 271
End page 277
Total pages 7
Publisher B M J Group
Place of publication London, England
Publication date 2014
ISSN 0306-3674
1473-0480
Keyword(s) physical environment mediators
physical activity
school-based intervention
Australia
school play environment
Summary Background 
To investigate the interpersonal and physical environment mediators of the Transform-Us! mid-intervention effects on physical activity (PA) during recess and lunchtime.

Methods
Transform-Us! is a clustered randomised school-based intervention with four groups: sedentary behaviour intervention (SB-I), PA intervention (PA-I), combined PA+SB-I and control group. All children in grade 3 from 20 participating primary schools in Melbourne, Australia were eligible to complete annual evaluation assessments. The outcomes were the proportion of time spent in moderate-to-vigorous PA (MVPA) and light PA (LPA) during recess and lunchtime assessed by accelerometers. Potential mediators included: perceived social support from teachers; perceived availability of line markings; perceived accessibility of sports equipment; and perceived school play environment. Generalised linear models were used and mediation effects were estimated by product-of-coefficients (a·b) approach.

Results
268 children (8.2 years, 57% girls at baseline) provided complete data at both time points. A significant intervention effect on MVPA during recess in the SB-I and PA-I groups compared with the control group (proportional difference in MVPA time; 38% (95% CI 21% to 57%) and 40% (95% CI 20% to 62%), respectively) was found. The perceived school play environment was significantly positively associated with MVPA at recess among girls. An increase in perceived social support from teachers suppressed the PA+SB-I effect on light PA during recess (a·b= −0.03, 95% CI −0.06 to −0.00). No significant mediating effects on PA during recess and lunchtime were observed.

Conclusions
A positive perception of the school play environment was associated with higher MVPA during recess among girls. Future studies should conduct mediation analyses to explore underlying mechanisms of PA interventions.
Language eng
DOI 10.1136/bjsports-2013-092466
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1 Refereed article in a scholarly journal
Grant ID NHMRC 533815
Copyright notice ©2014, B M J Group
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30059659

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Created: Tue, 21 Jan 2014, 13:24:16 EST by Jane Moschetti

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.