At what level does the anaerobic threshold reach the ventilatory breakpoint in an untrained individual?
a. at 10% of their maximal aerobic capacity
b. at 30% of their maximal aerobic capacity
c. at 55% of their maximal aerobic capacity
d. at 80% of their maximal aerobic capacity
Answer: c. at 55% of their maximal aerobic capacity
The anaerobic threshold reaches the ventilatory breakpoint in an untrained individual at approximately 55% of their maximal aerobic capacity. In endurance-trained athletes this breakpoint is much higher, at 80-85% their maximal aerobic capacity.