LOTFI, G. Optimal distance of an external focus of attention in standing long jump performance of athletes. Physical Education of Students, [S. l.], v. 22, n. 3, p. 134–139, 2018. DOI: 10.15561/20755279.2018.0304. Disponível em: https://www.sportedu.org.ua/index.php/PES/article/view/616. Acesso em: 14 jul. 2026.