Exercise-induced hypertension is not completely understood, but should not be a deterrant to exercise. However, for extreme/intense training -- such as an Ironman, you should take note if you experience any new symptoms, or develop resting hypertension (when you are not exercising). If so, it may then be indicated to lower the intensity of your training regimen -- as Ironman competitions are often above and beyond the normal exercise intensity of that recommended for routine cardiovascular health maintenance.
Thank you! I am going to meet with a Cardiologist in the Philadelphia area as well to ensure I am safe to train. Thanks so much again.