T Azatyan
THE RHEOENCEPHALOGRAPHIC STUDY OF THE INTERHEMISPHERIC ASYMMETRY OF CEREBRAL BLOOD FLOW IN HEALTHY AND MENTALLY RETARDED CHILDREN
Georgian medical news
physical activity observed repeatedly decline children transition adolescence however studies explored possibility subgroups children experience unique patterns change transition purpose longitudinal study examine physical activity trajectories clusters youth transitioning 5th 11th grade participants n 652 recruited 5th graders ages 1012 years elementary schools n 21 two school districts demographic anthropometric physical activity data collected per year children 5th 6th 7th 9th 11th grades children wore accelerometers 7 consecutive days groupbased trajectory modeling statistical techniques applied identify patterns physical activity trajectories posterior probabilities confirmed participants membership respective group three distinct physical activity trajectories identified group 1 n 27 remained highly active time physical activity increased ages 14 16 years group 2 n 365 active baseline activity declined remained low group members aged group 3 n 260 lowest levels physical activity ages activity declined ages 10 16 years children experienced decline physical activity transitioned high school remained highly active increased level physical activity future studies test physical activity interventions youth tailored agerelated trajectory groups