2026-10-222026-10-222026SILVA, Daniela Lima. Efeitos de um programa de atividade física estruturada para o desempenho motor na primeira infância : um estudo quase-experimental. Orientadora: Biatriz Araújo Cardoso Dias. 2026. 53 f. Dissertação (Mestrado em Reabilitação e Desempenho Funcional) - Centro de Ciências Biológicas e da Saúde, Universidade do Estado do Pará, Belém, 2026.https://portaldaposgraduacao.uepa.br/handle/riuepa/383AbertoCapacidade motora em criançaAtividade físicaPostura humanaEquilíbrioDesenvolvimento infantilMotor capacity in childrenPhysical activityHuman postureBalanceChild developmentDissertaçãoCiências BiológicasMotor performance is fundamental to child development, contributing to functional autonomy, participation in daily activities, and the adoption of an active lifestyle. During the preschool period, the school environment represents a strategic setting for promoting diverse motor experiences. This dissertation aimed to investigate motor performance in preschool children, considering associated factors and changes observed following participation in a structured physical activity program. Children aged 3 to 4 years enrolled in a municipal early childhood education school in Belém, Pará, Brazil, participated in the study. Motor performance, balance, and sociodemographic and behavioral characteristics were assessed using the Rosa Neto Motor Development Scale and the Pediatric Balance Scale. The physical activity program was conducted twice a week for six weeks, with 45-minute sessions. The results showed that, although most children presented motor performance compatible with their age group, a proportion demonstrated below-expected performance, associated with factors such as social vulnerability and lower participation in physical activities. Following the intervention, statistically significant differences were observed in several parameters of motor performance and balance, particularly Balance Motor Age, which increased from 33.69±8.32 to 43.84±6.73 months (p<0.0001; d=1.83), Balance Motor Quotient, which increased from 73.55±16.11% to 92.05±11.73% (p<0.0001; d=1.52), and performance on the Pediatric Balance Scale, which increased from 39.88±6.70 to 46.00±6.32 points (p<0.0001; d=1.18). It is concluded that monitoring motor performance and providing structured motor experiences in the school environment may promote motor performance and balance during early childhood, although the absence of a control group limits the attribution of the observed changes exclusively to the intervention.PPGREAB - Avaliação e intervenção terapêutica nos sistemas neuromuscular