Table A1.

Techniques and approaches used in the Coaching on Lifestyle (CooL) intervention.

Techniques, Key Terms and Approaches Used in the Adult Programme	Techniques and Approaches Used in the Children and Adolescent Programme All techniques and approaches used for the adult programme are combined with specific interventions, because of the specific nature of the educational relationship between parents and their children
Autonomy-supportive coaching	General parenting constructs (control, responsiveness and structure)
Celebrating (small) successes
Coaches providing feedback and compliments	Parenting practices (e.g., modelling, rule setting and rewarding) to stimulate desired behaviour and to restrict undesired behaviour
Communication skills of the client
Dealing with lapses/relapses and temptations
Estimating the value of (different sources of) information	Negotiation skills
Goal setting
Implementation intentions
Increasing self-efficacy
Knowledge about healthy lifestyle and behavioural change
Mobilizing social support
Motivational interviewing
Nudging
Ownership
Peer modelling, peer support and peer learning
Positive health and positive psychology
Rewarding
Self-management, self-monitoring and self-evaluation
Stepping out of one’s comfort zone