Protocol for the Let’s Grow randomised controlled trial: examining efficacy, cost-effectiveness and scalability of a m-Health intervention for movement behaviours in toddlers
Marj Moodie,
Katherine L Downing,
Harriet Koorts,
Jess Haines,
Liliana Orellana,
Valerie Carson,
Victoria Brown,
Kylie D Hesketh,
Jo Salmon,
Marie Löf,
Karen J Campbell,
Barbara C Galland,
Rachael Taylor,
Jan M Nicholson,
Mohamed Abdelrazek,
Lisa M Barnett
Affiliations
Marj Moodie
Deakin Health Economics, Institute for Health Transformation, Deakin University Faculty of Health, Geelong, Victoria, Australia
Katherine L Downing
Institute for Physical Activity and Nutrition, Deakin University, Geelong, Melbourne, Australia
Harriet Koorts
Deakin University, Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Geelong, VIC 3216, Australia
Jess Haines
4 University of Guelph, Guelph, Ontario, Canada
Liliana Orellana
4 Biostatistics Unit, Deakin University Faculty of Health, Burwood, Victoria, Australia
Valerie Carson
5 University of Alberta, Edmonton, Alberta, Canada
Victoria Brown
Deakin Health Economics, Global Centre for Preventive Health and Nutrition, Institute for Health Transformation, Deakin University, Burwood, Victoria, Australia
Kylie D Hesketh
1 School of Exercise and Nutrition Sciences, Deakin University Institute for Physical Activity and Nutrition, Geelong, Victoria, Australia
Jo Salmon
Institute for Physical Activity and Nutrition, Deakin University, Burwood, Victoria, Australia
Marie Löf
7 Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
Karen J Campbell
Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
Barbara C Galland
1 Department of Women’s and Children’s Health, University of Otago, Dunedin, New Zealand
Rachael Taylor
Centre for Research Excellence in the Early Prevention of Obesity in Childhood, University of Sydney, Sydney, New South Wales, Australia
Jan M Nicholson
1 Judith Lumley Centre, School of Nursing and Midwifery, La Trobe University, Bundoora, Victoria, Australia
Mohamed Abdelrazek
Department of Medical Imaging, Western University, London, Ontario, Canada
Lisa M Barnett
Institute for Physical Activity and Nutrition, Deakin University Faculty of Health, Geelong, Victoria, Australia
Introduction Despite being an important period for the development of movement behaviours (physical activity, sedentary behaviour and sleep), few interventions commencing prior to preschool have been trialled. The primary aim of this trial is to assess the 12-month efficacy of the Let’s Grow mHealth intervention, designed to improve the composition of movement behaviours in children from 2 years of age. Let’s Grow is novel in considering composition of movement behaviours as the primary outcome, using non-linear dynamical approaches for intervention delivery, and incorporating planning for real-world implementation and scale-up from its inception.Methods and analysis A randomised controlled trial will test the effects of the 12-month parental support mHealth intervention, Let’s Grow, compared with a control group that will receive usual care plus electronic newsletters on unrelated topics for cohort retention. Let’s Grow will be delivered via a purpose-designed mobile web application with linked SMS notifications. Intervention content includes general and movement-behaviour specific parenting advice and incorporates established behaviour change techniques. Intervention adherence will be monitored by app usage data. Data will be collected from participants using 24-hour monitoring of movement behaviours and parent report at baseline (T0), mid-intervention (T1; 6 months post baseline), at intervention conclusion (T2; 12 months post baseline) and 1-year post intervention (T3; 2 years post baseline). The trial aims to recruit 1100 families from across Australia during 2021. In addition to assessment of efficacy, an economic evaluation and prospective scalability evaluation will be conducted.Ethics and dissemination The study was approved by the Deakin University Human Ethics Committee (2020-077). Study findings will be disseminated through publication in peer-reviewed journals, presentation at scientific and professional conferences, and via social and traditional media.Trial registration number ACTRN12620001280998; U1111-1252-0599.
