Exercise intensity where ventilation rises disproportionately to workload.
The ventilatory threshold is the exercise intensity at which minute ventilation begins to increase non-linearly relative to oxygen uptake or external workload, reflecting a shift toward greater anaerobic metabolic contribution, and is used as a sub-maximal marker of aerobic fitness. It is sometimes equated with the lactate/anaerobic threshold, though the two are derived from different measurements and do not always coincide exactly.
This guide was auto-drafted and is pending editorial review.