Background
TCM
Physical activity (PA) has many known benefits for children and adolescents [PA in childhood predicts adult PA levels – being active as a child significantly increases the probability of being active as an adult [One of the prominent motivational theories frequently used in developing health interventions is the self-determination theory (SDT) [Understanding the determinants of PA in adolescents has been greatly advanced by the application of the trans-contextual model (TCM) [Research based on TCM has revealed that adolescents who perceive greater autonomy support in physical education (PE) are more likely to engage in PA outside of school, due to increased autonomous motivation, social cognition beliefs (i.e., attitude, subjective norms, and perceived behavioural control), and intentions towards PA [The home setting has not been extensively studied so far. However, parents are also important influencers regarding children’s health behaviours. Parental support is significantly correlated to children’s PA levels [“Active 1 + FUN” is an example of a family-based intervention program designed based on the tenets of SDT. The 6-month program was designed to help parents support their children’s basic psychological needs and increase children’s MVPA and co-activity with parents. The intervention was carried out using face-to-face approach and comprised of ten activity sessions. The program resulted in improving children’s fundamental moving skills, however changes in accelerometer-measured MVPA were not evident [Behavioural interventions can harness digital technology to improve scalability and effectiveness [