Nevin Amin Al-Afifi , Azza Mostafa Nassar , Maha Khalil Mohamed , Esraa Hassan Sobhy. ""The effect of some technical proprioceptive neuromuscular facilities (PNF) on some physiological variables in swimming for the triathlon player"". International Journal of Sports Science and Arts, 013, 013, 2020, 156-172. doi: 10.21608/eijssa.2020.30304.1013