Hassan Abdul Hadi Lahimes. The effect of the high intensity of the physical effort by the interrupted and the continuous on the beta-endrophine concentration and some of the physiological changes for men in (45-50) years old. ms [Internet]. 2019 Jun. 30 [cited 2025 Apr. 3];18(2):537-46. Available from: https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1568