TY - JOUR T1 - Levels, factors and interventions of preschool children physical activity: a systematic review JO - Ciência & Saúde Coletiva A1 - Coelho, Vitor Antonio Cerignoni A1 - Tolocka, Rute Estanislava SN - 1413-8123 UL - 10.1590/1413-812320202512.14332018 VL - 25 Y1 - 2020 PB - Brasil ER -