Post-exercise heart rate variability recovery after 800-m endurance run load among Cameroonian adolescent's males oleh Jerson Mekoulou Ndongo, Elysée Claude Bika Lele, Wiliam Richard Guessogo, Wiliam Mbang Mbian, Clarisse Noel Ayina Ayina, Jessica Guyot, Christian Ngongang Ouankou, Abdou Temfemo, Loick Pradel Kojom Foko, Ernest Tchoudjin, Louis-Georges Gassina, Bienvenu Bongue, Frederic Roche, Samuel Honoré Mandengue, Peguy Brice Assomo-Ndemba