XAIPANGNA, Bouavanh XAIPANGNA vanh, Pratoom MUONGMEE, and Poonpong SUKSAWANG. 2015. “COMPARISON OF PHYSICAL FITNESS OF HIGH AND LOW ACADEMIC ACHIEVEMENT SECONDARY SCHOOL STUDENTS”. Journal of Sports Science and Technology 15 (2):133-44. https://he01.tci-thaijo.org/index.php/JSST/article/view/44942.