TransformUs All Abilities – School-based physical activity and sedentary behaviour interventions for children and adolescents with disability.

TransformUs All Abilities is a school-based intervention targeting reducing sedentary behaviour and increasing physical activity in children and adolescents with additional needs. The objective of this trial is to test the effectiveness of TransformUs All Abilities in relation to physical activity and sedentary time, physical literacy, and cognitive functions in students with disability. The overall duration of the intervention is 6 months – i.e., the follow-up evaluation will be at 6 months for the Effectiveness trial. The intervention will include a repertoire of activities that teachers could choose and implement differently across the day. Some examples of interventions are: - Active breaks – short (up to 2-minutes) activities that interrupt prolonged periods (e.g., 20-30 minutes) of sitting in class. They can be incorporated into any class lesson. At least one active break should be planned for and delivered in each core lesson. For example: Active bingo, active grammar, chair yoga). - Active lessons – longer sessions (e.g., 30 minutes) directly linked to the curriculum and involve integrating movement into the student learning experience. For example: times table teams (Maths), relay story (English). - Active recreation – active play and recreation activities conducted before, during (including recess and lunch), and after school. The activity type, frequency and duration depend on the students' likes and on the specific characteristics of each school’s environment and timetable. These may include activity incursions (e.g., circus skills), sports (e.g., Basketball, Soccer, Netball) and other activities (e.g., Ultimate frisbee, Dodgeball, Finska). - Changes in the school environment – active indoor/outdoor environment, active equipment, teacher encouragement (i.e., champion), active school policies. This may include, for example, a borrowing system for active equipment at lunchtime, the installation and use of standing desks in the classroom, and the use of sports uniforms for the whole week. Teachers will be encouraged to implement the strategies as much as possible into their lessons. They will also be asked to encourage students to participate in the activities outside the classroom. The teachers and schools will have the option to participate in a teacher professional development session (online or face-to-face, lasting 30 minutes to 1 hour in duration), at a suitable time up to a month before commencing the trial. All the program resources, including a downloadable version of the teacher training, will be available through the TransformUs website (www.transformus.com.au). We will provide continuous communication and support from the TransformUs Team and a ‘champion teacher’ within the school to encourage engagement with the TransformUs resources. Monitoring of the strategies will include Ecological Momentary Assessment (EMA) (during the intervention period). The EMAs are designed to assess the frequency and duration of intervention. These will be sent via text message and take a few minutes to complete. The EMAs will be sent up to 3 times per term for the duration of the trial. EMAs will be sent via text message.