The effect of spark exercise program on gross and fine motor skills of 6-8 year old boys with mental retardation. Rev. Invest. Univ. Quindío [Internet]. 2023 Sep. 13 [cited 2026 Jun. 25];35(2). Available from: https://revistas.uniquindio.edu.co/ojs/index.php/riuq/article/view/1195