Sport, Physical activity and Eating behaviour: Environmental Determinants in Young people (SPEEDY)
The SPEEDY study looks at physical activity and diet in children aged between 9 and 10 years in Norfolk. This study aims to improve our understanding of current patterns of diet and physical activity among children. It is hoped that this will identify specific factors which are associated with diet and physical activity. This information can then be used to help design interventions and policies that promote increased physical activity and healthy eating in children.
Over the summer term of 2007, we recruited over 2,000 children from around 90 schools across Norfolk. Physical activity was measured using questionnaires and accelerometers (Actigraph). Food diaries and food frequency questionnaires were then used to measure dietary habits. Children, parents and head teachers completed detailed questionnaires assessing potential determinants of these health behaviours and the children’s height and weight were also measured.
We are also assessing how the wider environment influences physical activity and diet by linking the data we collect to geographical information systems. In a small sub-study organised by Dr Andy Jones (The Centre for Social and Economic Research on the Global Environment [CSERGE], UEA) some of the children are wearing a Global Positioning System (GPS) device as well as an Actigraph. This enables us to better understand in what situations children tend to be active or inactive.
The SPEEDY study is a collaborative study with the Departments of Health Policy and Practice and Environmental Sciences at the University of East Anglia in Norwich.
The Sport, Physical activity and Eating behaviour, Environmental Determinants in Young People (SPEEDY) study aims to examine change in physical activity and dietary behaviour and their determinants in children and is a population-based prospective cohort study. The SPEEDY cohort consists of 2064 Year 5 children (9 – 10 years old) recruited from 92 primary schools across the county of Norfolk, UK in 2007. Baseline measures comprise accelerometer-assessed and self-reported activity, 4-day food diary, anthropometry (height, weight, waist circumference, impedance), questionnaires on determinants for children, schools, and parents, school audit, and objective environmental assessment with GIS. A 1-year follow up (SPEEDY-2) was completed in 2008 using a postal survey design; 1019 children took part, wearing an Actigraph accelerometer for 7 days and completing a questionnaire on determinants of physical activity and sedentary behaviour. Four year follow up (SPEEDY-3) was completed in 2011; measurements were conducted in secondary schools and 490 participants consented. All baseline measures were repeated; additional measures included GPS monitoring, blood pressure, and assessment of social networks.
Field work is completed, on-going processing and data analysis work is focussed on longitudinal and SPEEDY-3 data (linking GPS, accelerometer and GIS data; analysis of dietary data; statistical analysis of determinants of change in physical activity and dietary behaviour).
Unit led study conducted in collaboration with the School of Medicine, University of East Anglia. The Unit is responsible for data management.
A Unit held grant from the National Prevention Research Initiative funded the baseline. MRC core funding for 1 and 4 year follow-ups.