Effectiveness of behavioural interventions with motivational interviewing on physical activity outcomes in adults: systematic review and meta-analysis.

Objective: To evaluate the effectiveness of behavioural interventions that include motivational interviewing on physical activity outcomes in adults.

Design: Systematic review and meta-analysis.

Study Selection: A search of seven databases for randomised controlled trials published from inception to 1 March 2023 comparing a behavioural intervention including motivational interviewing with a comparator without motivational interviewing on physical activity outcomes in adults.