Plain English Summary
Background and study aims
Many children do not do enough physical activity. Girls are less active than boys. Getting low-active girls to do more physical activity would improve their hearts, lungs, and mental well-being. There is a lack of studies that focus on ways to help girls to be physically active. Dance is an activity that appeals to many girls and could engage low-active girls in physical activity. The Bristol Girls Dance Project (BGDP) is a study that aims to examine; a) whether participating in an after-school dance programme positively affects the physical activity levels of Year 7 girls, and b) the cost-effectiveness of this approach.
Who can participate?
The study will take place in 18 state maintained secondary schools in the greater Bristol area. We aim to recruit up to 33 Year 7 girls from each school to take part in the study.
What does the study involve?
To determine how well the programme works on children, there will be nine schools that receive the after-school dance programme (intervention schools), and nine schools that do not (control schools). The schools will be randomly allocated to the 'intervention' or 'control' group of the study. The dance programme will be led by expert dance instructors, and there will be 2x75 minute sessions per week in each of the nine schools (40 sessions overall). We will examine whether the intervention results in higher levels of physical activity at the end of a 20-week dance programme. We will also assess if this effect is maintained once the programme has ended. We will monitor all financial expenditure against a formal checklist.
What are the possible benefits and risks of participating?
The main potential risk is that a girl may develop a minor sport injury
Where is the study run from?
18 state maintained secondary schools in the greater Bristol area
When is the study starting and how long is it expected to run for?
April 2013 to August 2015
Who is funding the study?
National Institute of Health Research (NIHR) Public Health Research Programme (UK)
Who is the main contact?
Dr Mark Edwards
Dr Mark Edwards
Centre for Exercise
Nutrition and Health Sciences
School for Policy Studies
8 Priory Road
+44 (0)117 331 1011
NIHR PHR 11/3050/01
Bristol Girls Dance Project: a cluster randomised controlled trial of an after-school dance programme to increase physical activity among 11-12 year old girls
The main hypothesis is that participating in an after-school dance intervention will increase the physical activity levels of Year 7 girls, and that these effects will be maintained a year after the baseline measures have been taken - when the intervention has been removed.
School for Policy Studies Ethics Committee, University of Bristol, 07/02/2013
Cluster randomised controlled trial with school as the unit of randomisation
Primary study design
Secondary study design
Cluster randomised trial
Quality of life
Patient information sheet
Not available in web format, please use the contact details to request an information sheet
2x75 minute after-school dance sessions per week for 20 weeks (i.e. 2 school terms).
Primary outcome measure
Accelerometer-derived mean minutes of moderate to vigorous intensity physical activity (MVPA) on a weekday
Secondary outcome measures
1. Mean weekend minutes of MVPA
2. Mean weekday accelerometer counts per minute
3. Mean weekend accelerometer counts per minute
4. Mean minutes of sedentary time per weekday
5. Self-reported autonomy competence, relatedness, perceived parental support and self esteem
6. Mean EQ-5D-Y scores
7. Height and weight of study participants
8. Participant and programme costs
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
Year 7 girls in participating schools
Target number of participants
Between 450-594 Year 7 girls (who are physically able to participate in PE lessons) with a cluster size of 25-33 per school, from 18 secondary schools in the Greater Bristol area.
Participant exclusion criteria
Girls who are unable to take part in usual PE lessons will be excluded
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
University of Bristol
National Institute for Health Research (NIHR) Public Health Research Programme. Grant number: 11/3050/01
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Not provided at time of registration
Basic results (scientific)
2013 protocol in: http://www.ncbi.nlm.nih.gov/pubmed/24152257
2015 results in: http://www.ncbi.nlm.nih.gov/pubmed/26437720
2016 results in: http://www.ncbi.nlm.nih.gov/pubmed/27253002
2016 results in: http://www.ncbi.nlm.nih.gov/pubmed/26747038
Jago R, Edwards MJ, Sebire SJ, Cooper AR, Powell JE, Bird EL, Simon J, Blair PS, Bristol girls dance project (BGDP): protocol for a cluster randomised controlled trial of an after-school dance programme to increase physical activity among 11-12 year old girls., BMC Public Health, 2013, 13, 1003, doi: 10.1186/1471-2458-13-1003.
Jago R, Edwards MJ, Sebire SJ, Tomkinson K, Bird EL, Banfield K, May T, Kesten JM, Cooper AR, Powell JE, Blair PS, Effect and cost of an after-school dance programme on the physical activity of 11-12 year old girls: The Bristol Girls Dance Project, a school-based cluster randomised controlled trial, Int J Behav Nutr Phys Act, 2015, 12, 128, doi: 10.1186/s12966-015-0289-y.
Jago R, Edwards MJ, Sebire SJ, Bird EL, Tomkinson K, Kesten JM, Banfield K, May T, Cooper AR, Blair PS, Powell JE, Bristol Girls Dance Project: a cluster randomised controlled trial of an after-school dance programme to increase physical activity among 11- to 12-year-old girls, Public Health Research, 2016.