Get Healthy- Stay Healthy: a text message-delivered intervention on physical activity, dietary behaviours and weight loss

The Get Healthy-Stay Healthy (GHSH) intervention is specifically designed to follow-on from the Get Healthy Coaching Service (GHS). The 6-month GHSH extended-contact intervention is primarily delivered via text messages that are individually-tailored in terms of frequency, timing, content and wording. In order to tailor the text message content and to negotiate the participant’s text messaging preferences, participants receive two tailoring telephone calls, e.g. 20-30 minutes; one call at the start of the intervention; and another call at mid-intervention. During the GHSH extended contact intervention participants choose whether they focus on a weight loss (no more than 2kg per month) or weight maintenance goal and whether they focus on physical activity or diet or both behaviours (with targets consistent with national guidelines for physical activity and healthy eating).