Silva, Diego Augusto SantosGonçalves, Eliane Cristina de AndradeCoelho, Emerson FilipinoCerqueira, Matheus SantosWerneck, Francisco Zacaron2023-09-282023-09-282022SILVA, D. A. S. et al. Cardiorespiratory fitness and physical activity among children and adolescents: 3-year longitudinal study in Brazil. International Journal of Environmental Research and Public Health, v. 19, n. 18, artigo 11431, 2022. Disponível em: <https://www.mdpi.com/1660-4601/19/18/11431>. Acesso em: 01 ago. 2023.1660-4601http://www.repositorio.ufop.br/jspui/handle/123456789/17497The aim of this study was to investigate the effect of physical activity (PA) levels over 36 months on the cardiorespiratory fitness (CRF) of children and adolescents. This was a longitudinal study carried out from 2016 to 2019 with 127 children and adolescents (82 males and 45 females) aged 13.5 ± 1.2 years at baseline. The 20 m shuttle run test (20 mSRT) was used to predict CRF. The questionnaires PAQ-C and PAQ-A were used to investigate PA. The 2 × 4 repeated measures ANCOVA was used, and the significance level was p ≤ 0.05. There was a linear trend in the interaction between level of PA and CRF throughout the 36-month study period in both sexes (males— distance covered: F1.78 = 4.567; p = 0.04; VO2max: F1.78 = 5.323; p = 0.02; females—distance covered: F1.41 = 6.989; p = 0.01; VO2max: F1.41 = 6.585; p = 0.01). Physically active males showed a gradual increase in CRF throughout the analyzed period. For females, CRF remained constant in the first 24 months, showing a slight increase only after 36 months in physically active ones. The findings of this study reinforce the importance of PA throughout childhood and adolescence to improve CRF.en-USabertoAdolescent healthExercisePhysical fitnessArtigo publicado em periodicoThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). Fonte: PDF do artigo.https://doi.org/10.3390/ijerph191811431