Mini Movers: A study evaluating the efficacy of a program to reduce sedentary behaviour in 2- to 4-year-old children.

Participants in the intervention group will participate in one group session (approximately 30 minutes), where they will be provided with information about sedentary behaviour, screen time and active play for their child. The session will be delivered by the PhD Candidate/Project Manager during the participants' playgroup time (at the usual playgroup setting). At this session they will receive, and be talked through, a booklet with information about the behaviours, guidelines for sedentary behaviour and physical activity in early childhood, ideas for active play and limiting screen time, and information about goal setting. They will then be asked to set two SMART (Specific, Measurable, Attainable, Relevant, Time-bound) goals relating to the outcomes of the study: one for increasing active play and one for limiting screen time. Parents will also receive 2-3 tailored text messages per week (for 6 weeks), which will include tips for limiting sedentary behaviour, ideas for active play, and prompts to check their progress with their goals.