Jian Liu, Xuemin Deng, and Yinfa Wang. “The Healthcare Function of Sports Based on the Old Age Law and the Psychological Regulation in Sports”. Revista de Psicología del Deporte (Journal of Sport Psychology) 32, no. 1 (March 11, 2023): 262–269. Accessed May 17, 2024. https://www.rpd-online.com/index.php/rpd/article/view/1244.