Introduction: The cardiorespiratory optimal point (COP) represents the lowest minute ventilation to oxygen consumption ratio (VE/VO2) and can be estimated during a CPET at submaximal intensity when an exercise test until volitional fatigue is not always advisable (i.e., a conflict zone where you cannot be confident of the security because near-competition, off-season, among other). 7CIBER of Frailty and Healthy Aging (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain.6Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile.5Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile.4Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain.3Escuela de Kinesiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago, Chile.2Magister en Fisiología Clínica de Ejercicio, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.1Exercise Applied Physiology Laboratory, Centro de investigación en Fisiología y Medicina de Altura, Departamento Biomédico, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, Chile.Alexis Oyarzo-Aravena 1,2 †, Alexis Arce-Alvarez 3 †, Camila Salazar-Ardiles 1,4, Rodrigo Ramirez-Campillo 5, Cristian Alvarez 5, Camilo Toledo 6, Mikel Izquierdo 4,7 and David C.

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