Skip to main content
placeholder image

Promoting physical activity among adolescent girls: the Girls in Sport group randomized trial

Journal Article


Download full-text (Open Access)

Abstract


  • Background: Slowing the decline in participation in physical activity among adolescent girls is a public health priority. This study reports the outcomes from a multi-component school-based intervention (Girls in Sport), focused on promoting physical activity among adolescent girls. Methods: Group randomized controlled trial in 24 secondary schools (12 intervention and 12 control). Assessments were conducted at baseline (2009) and at 18 months post-baseline (2010). The setting was secondary schools in urban, regional and rural areas of New South Wales, Australia. All girls in Grade 8 in 2009 who attended these schools were invited to participate in the study (N=1769). Using a Health Promoting Schools and Action Learning Frameworks, each school formed a committee and developed an action plan for promoting physical activity among Grade 8 girls. The action plan incorporated strategies in three main areas - i) the formal curriculum, ii) school environment, and iii) home/school/community links - based on the results of formative data from target girls and staff and on individual needs of the school. A member of the research team supported each school throughout the intervention. The main outcome measure was accelerometer-derived total physical activity (TPA) spent in physical activity. Data were analyzed from December 2011 to March 2012. Results: 1518 girls (mean age 13.6y ±0.02) were assessed at baseline. There was a significant decline in TPA from baseline to 18-month follow-up with no differences between girls in the intervention and control schools. Only one-third of schools (4/12) implemented the intervention as per their action plan. Per-protocol analyses on these schools revealed a smaller decline in percentage of time spent in MVPA among girls in the intervention group (adjusted difference 0.5%, 95% CI=-0.01, 0.99, P=0.05). Conclusions: The Girls in Sport intervention was not effective in reducing the decline in physical activity among adolescent girls. Lack of implementation by most intervention schools was the main reason for a null effect. Identifying strategies to enhance implementation levels is critical to determining the true potential of this intervention approach. Trial registration: This study was retrospectively registered with the Australian New Zealand Clinical Trials Registry ACTRN12610001077055. Date of registration: 7 December 2010.

Authors


  •   Okely, Anthony D.
  •   Lubans, David R. (external author)
  •   Morgan, Philip J. (external author)
  •   Cotton, Wayne G. (external author)
  •   Peralta, Louisa (external author)
  •   Miller, Judith (external author)
  •   Batterham, Marijka
  •   Janssen, Xanne (external author)

Publication Date


  • 2017

Citation


  • Okely, A. D., Lubans, D. R., Morgan, P. J., Cotton, W., Peralta, L., Miller, J., Batterham, M. & Janssen, X. (2017). Promoting physical activity among adolescent girls: the Girls in Sport group randomized trial. International Journal of Behavioral Nutrition and Physical Activity, 14 (1), 81-1-81-13.

Scopus Eid


  • 2-s2.0-85021067357

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4050&context=sspapers

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/3045

Has Global Citation Frequency


Start Page


  • 81-1

End Page


  • 81-13

Volume


  • 14

Issue


  • 1

Place Of Publication


  • United Kingdom

Abstract


  • Background: Slowing the decline in participation in physical activity among adolescent girls is a public health priority. This study reports the outcomes from a multi-component school-based intervention (Girls in Sport), focused on promoting physical activity among adolescent girls. Methods: Group randomized controlled trial in 24 secondary schools (12 intervention and 12 control). Assessments were conducted at baseline (2009) and at 18 months post-baseline (2010). The setting was secondary schools in urban, regional and rural areas of New South Wales, Australia. All girls in Grade 8 in 2009 who attended these schools were invited to participate in the study (N=1769). Using a Health Promoting Schools and Action Learning Frameworks, each school formed a committee and developed an action plan for promoting physical activity among Grade 8 girls. The action plan incorporated strategies in three main areas - i) the formal curriculum, ii) school environment, and iii) home/school/community links - based on the results of formative data from target girls and staff and on individual needs of the school. A member of the research team supported each school throughout the intervention. The main outcome measure was accelerometer-derived total physical activity (TPA) spent in physical activity. Data were analyzed from December 2011 to March 2012. Results: 1518 girls (mean age 13.6y ±0.02) were assessed at baseline. There was a significant decline in TPA from baseline to 18-month follow-up with no differences between girls in the intervention and control schools. Only one-third of schools (4/12) implemented the intervention as per their action plan. Per-protocol analyses on these schools revealed a smaller decline in percentage of time spent in MVPA among girls in the intervention group (adjusted difference 0.5%, 95% CI=-0.01, 0.99, P=0.05). Conclusions: The Girls in Sport intervention was not effective in reducing the decline in physical activity among adolescent girls. Lack of implementation by most intervention schools was the main reason for a null effect. Identifying strategies to enhance implementation levels is critical to determining the true potential of this intervention approach. Trial registration: This study was retrospectively registered with the Australian New Zealand Clinical Trials Registry ACTRN12610001077055. Date of registration: 7 December 2010.

Authors


  •   Okely, Anthony D.
  •   Lubans, David R. (external author)
  •   Morgan, Philip J. (external author)
  •   Cotton, Wayne G. (external author)
  •   Peralta, Louisa (external author)
  •   Miller, Judith (external author)
  •   Batterham, Marijka
  •   Janssen, Xanne (external author)

Publication Date


  • 2017

Citation


  • Okely, A. D., Lubans, D. R., Morgan, P. J., Cotton, W., Peralta, L., Miller, J., Batterham, M. & Janssen, X. (2017). Promoting physical activity among adolescent girls: the Girls in Sport group randomized trial. International Journal of Behavioral Nutrition and Physical Activity, 14 (1), 81-1-81-13.

Scopus Eid


  • 2-s2.0-85021067357

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4050&context=sspapers

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/3045

Has Global Citation Frequency


Start Page


  • 81-1

End Page


  • 81-13

Volume


  • 14

Issue


  • 1

Place Of Publication


  • United Kingdom