Fig. 1From: Effects of a programme of vigorous physical activity during secondary school physical education on academic performance, fitness, cognition, mental health and the brain of adolescents (Fit to Study): study protocol for a cluster-randomised trialFit to Study trial schedule of forms and procedures (adapted from SPIRIT figure). Abbreviations: HBSCÂ Health Behaviour in School-aged Children, PDSSÂ Paediatric Daytime Sleepiness Scale, PEÂ physical education, P-SDQÂ Physical Self-Description Questionnaire, SDQÂ Strengths and Difficulties Questionnaire, PAÂ physical activity, VPAÂ vigorous physical activityBack to article page