What happens to blood pressure during exercise — what's normal vs. dangerous?

During maximal aerobic exercise in healthy men, systolic blood pressure rises to 200–230 mmHg and diastolic remains stable or drops slightly, this is a normal and expected physiological response; what is abnormal is: (1) exaggerated hypertensive response (systolic above 250 mmHg or rapid rise to 230+ mmHg at moderate workload); (2) failure of systolic blood pressure to rise with increasing workload (may indicate cardiac output limitation); (3) diastolic rise above 15 mmHg from resting baseline (suggests elevated peripheral vascular resistance) (Shephard & Balady, Circulation, 1999).

Exercise blood pressure response is one of the parameters measured in an exercise stress test and provides cardiovascular information beyond what resting blood pressure offers. An exaggerated blood pressure response to exercise (above 200 mmHg systolic at low workload) is a predictor of future resting hypertension development and elevated cardiovascular event risk, even when resting blood pressure is currently normal. This is another piece of cardiovascular information that exercise testing provides and standard clinical evaluation misses.

Honesty Scale: Solid (1) for the exercise blood pressure response parameters as clinical standards.

What to do: If you have an exercise stress test, ask your physician what your peak systolic blood pressure was and whether your blood pressure response was normal, exaggerated, or blunted. This information should be in the test report but is rarely communicated in lay terms.

For the full picture, read The Blood Pressure Deep Dive