USING VARIABLE RATIOS IN PERIODS OF WORK TO REST AND ITS REFLECTION TO DEVELOPING SOME PHYSICAL VARIABLES FOR HANDBALL PRACTITIONERS AGED 40-50 YEARS. Res. Jou. Ana.Inv. [Internet]. 2022 Jun. 5 [cited 2026 Jan. 31];3(06):1-12. Available from: https://reserchjet.academiascience.org/index.php/rjai/article/view/509