anaerobic ventilatory threshold

an·aer·o·bic ven·ti·la·to·ry thresh·old

(an'ār-ō'bik ven'ti-lă-tōr-ē thresh'ōld)
The onset of metabolic acidosis during exercise signifying the peak work rate of oxygen consumption (VO2max) in which energy demands exceed circulatory ability to sustain aerobic metabolism.