Table 2.

Elements of the dbcoach intervention

Component	Time of event	Duration	Content/aim	Task for participants before the next coaching
Coaching 1	Week 1	30 min	Give overview of coaching process Build trust with coach Establish compliance with the programme	Test functions of the app
Coaching 2	Week 2	30 min	Provide information about targeted health behaviour Clarify advantages of the new health behaviour Strengthen expectations of consequences	Monitor nutrition and exercise Read information on diet approaches and exercise recommendations
Coaching 3	Week 3	30 min	Determine health goals Set nutrition and physical-activity goals Collect ideas for action planning	Experiment with exercise and nutrition ideas
Coaching 4	Week 4	30 min	Discuss implementation of nutrition ideas Concretize ideas and create nutrition plan Review nutrition plan	Implement nutrition plan
Coaching 5	Week 5	30 min	Discuss implementation of ideas for physical activity Concretise ideas and create physical-activity plan Review physical-activity plan	Implement physical-activity plan
Coaching 6	Week 6	30 min	Identify barriers to physical activity and healthy eating Create individual barrier management	Use barrier management Note further barriers
Coaching 7–24	Weeks 8–54	30 min	Address individual goals, needs and problems Use of individual BCTs	Set individual tasks

BCTs, Behaviour change techniques.