Group Exercise Instructor Free Test Prep

Answer: C - The first ventilatory threshold - also referenced as the “crossover” point - is the point at which the body starts to accumulate lactic acid in the blood stream; it manifests as an increase in the rate of respirations. The GFI should cue participants to watch for the signs of VT1 (“able to talk, but just barely”) and then perform a heart rate assessment. This will give class members a better idea of what an appropriate target heart rate for exercise should be.