Evaluation of an eHealth type 2 diabetes risk reduction program for weight loss in women with a history of gestational diabetes

INTERVENTION: 1. Medium personalisation group ‐ will receive access to a website tailored to women with a history of gestational diabetes and personalised text messages over a 3 month period. The materials on the 'Body Balance Beyond' gestational diabetes (BBBGDM) website are predominantly self‐directed and designed to promote modest weight loss through supporting participants to make a series of small changes to eating and exercise behaviours and form new healthy habits. Participants will have access to the site for 3 months and can accessed at their discretion. Website usage metrics will be captured using Google Analytics. The BBBGDM website contains five sections: a) Managing my risk ‐ outlines the risk factors for developing diabetes in the future and actions which can reduce risk. b) My Plan ‐ participants will be emailed personalised feedback reports on dietary intake and physical activity (generated from the Australian Eating Survey and Godin activity questionnaires) in comparison to national nutrition and exercise guidelines. This section guides participants through using their reports to set weight‐, diet‐ and exercise‐related goals, and strategies for self‐monitoring and managing relapses. c) Eating ‐ contains information and links to resources to promote healthy eating (e.g. portion size, energy density, meal planning, label reading, recipes, breastfeeding). d) Physical Activity ‐ contains information and links to resources to promote being more active (e.g. types of activity, benefits, suggestions for being active with a family, exercising safely). e) Wellbeing ‐ contains information and resources on social support, stress management and sleep. In addition, participants in this group will receive three text messages per week. The messages will consist of reminders to self‐monitor or reflect on goals and two personalised messages (one diet‐related and one exercise‐related) addressing the participant’s self‐identified barriers to healthy ea CONDITION: Diet and Nutrition ‐ Obesity Gestational diabetes ;Obesity;Type 2 diabetes; ; Gestational diabetes; ; Obesity ; Type 2 diabetes Metabolic and Endocrine ‐ Diabetes Reproductive Health and Childbirth ‐ Fetal medicine and complications of pregnancy PRIMARY OUTCOME: Weight (kg); participant reported[baseline and 12 weeks (primary timepoint)] INCLUSION CRITERIA: ‐ had a gestational diabetes diagnosis in the last two years ‐ are at least 3 months post‐partum ‐ have a Body Mass Index between 25 and 50 kg/m2 SECONDARY OUTCOME: Addictive eating behaviours measured using the Modified Yale Food Addition Scale[baseline and 12 weeks] Dietary intake measured using the Australian Eating Survey (FFQ) [baseline and 12 weeks ] Eating behaviours measured using the Three Factor Eating Questionnaire[baseline and 12 weeks] Eating self‐efficacy measured using the Weight Efficacy Lifestyle Questionnaire‐Short Form[baseline and 12 weeks] Habit formation using the Self‐report Habit Index[baseline and 12 weeks] Physical activity measured by Godin Leisure‐time Exercise Questionnaire[baseline and 12 weeks ] Program process evaluation questionnaire completed by participants designed specifically for this study.[12 weeks ] Quality of Life measured using the AQoL‐6D[baseline and 12 weeks ] Self‐efficacy in relation to physical activity measured using the Self‐efficacy for Exercise Scale[baseline and 12 weeks]