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Table 1 Action 3:30 SPIRIT diagram displaying study recruitment and measures schedule

From: Action 3:30R: protocol for a cluster randomised feasibility study of a revised teaching assistant-led extracurricular physical activity intervention for 8- to 10-year-olds

  Study period
  Pre-enrolment Enrolment Allocation Post-allocation Follow-up
Timepoint Opt-out T0 Randomization Intervention T1
Enrolment
 Opt-out consent X     
 Opt-out survey (12 schools) X     
 Opt-out accelerometer (4 schools) X     X
 Informed parental consent   X    
 Baseline measures   X    
 Randomization into study arm    X   
Interventions
 TA training (intervention schools)     X  
 Extracurricular physical activity intervention (6 schools)     X  
 Normal treatment (6 schools)     X  
Assessments
 Percentage opt-out X     X
 Self-reported physical activity X     
 Percentage opt-in (total, by sex)   X    
 Participant characteristics   X    X
 Self-reported psychosocial questionnaires   X    X
 Economic evaluation     X X
 Mean daily moderate-to-vigorous physical activity   X    X
 Process evaluation     X X