Bryan is a personal trainer taking his client through the Ventilatory Threshold 2 (VT2) test. Which statement best summarizes the protocols of this test?
1) The VT2 test measures the point at which an individual's breathing rate and oxygen consumption increase significantly.
2) The VT2 test is used to determine an individual's maximum heart rate during exercise.
3) The VT2 test involves measuring blood lactate levels to assess an individual's anaerobic threshold.
4) The VT2 test is a measure of an individual's aerobic fitness level.
