Coach-led vs self-directed habit-based interventions for weight loss in adults with overweight and obesity: a randomised controlled trial

Sum Sanos, is a 12-month, one-on-one coach-led, habit-based weight loss program. Health coaches meet face-to-face with participants (or video call if face-to-face is not feasible) on a monthly basis for a 1 hour conversation, and follow-up with them via a 10-minute phone call on a weekly basis. The frequency of these follow-ups is aimed to establish accountability, support and maintain engagement in the program. The methodologies that form the foundation of Sum Sanos are based on evidence of key weight-loss facilitators; these topics are covered as a module during the monthly sessions (i.e., habit-change, self-compassion, mindful eating, setback strategies, etc.). Participants are asked to track their daily habits using a ticksheet. This will be collected by the research assistants to assess adherence. Additionally, the number of monthly coach sessions and weekly phone calls attended will be recorded by the coach. Although there is no specific measure of fidelity, part of the coach's role is to help the participant maintain accuracy and consistency of the intervention.