Michalek, Josef, Martin Sebera, and Jaromir Sedlacek. “Physical Activity As a Determinant of Diseases, Back and Joint Pains in Adult Czech Population”. Journal of Human Sport and Exercise 9, no. 1proc (July 20, 2014): S429-S435. Accessed April 27, 2024. https://www.jhse.ua.es/article/view/2014-v9-n1-proc-physical-activity-as-a-determinant-of-diseases-b.