Dr. Saad Tayih Abid Fleih Al-Abise. The effect of exercises according to the level of lactate concentration to developing speed reserve, lactate threshold and achieving the 800 m under 20 years. Int J Yogic Hum Mov Sports Sciences 2023;8(2):223-229. DOI:
https://doi.org/10.22271/yogic.2023.v8.i2d.1460