Immelman you are about right. Here is the info I was looking for:
Opinions vary as to the definition of a hypertensive response to exercise, but most authorities accept as a maximal limit a systolic pressure of 230 mm Hg. The diastolic blood pressure during exercise usually varies 10 mm Hg in either direction.
A maximal exercise stress test is one that achieves the target heart rate, exercise level or time limit established for the patient. In most cases, the goal is the target heart rate, as calculated with the following formula: (220 - patient's age) × 0.85 beats per minute.
MARK D. DARROW, M.D
Thanks
RV6