
Originally Posted by
Sgt. Hartman
Kind of interesting you mentioned the HR thing. I was doing HIIT regularly about a year ago and wearing a HR monitor and my HR would frequently get to my max and occasionally over my max. I was kind of worried if it was dangerous so I started reading up on it.
Basically, the 220 - your age formula is a bunch of garbage. Max HR is the absolute maximum times your heart can beat per minute without going into fibrallation. You can't exceed your max HR, it is the absolute maximum your heart is capable of beating, or better yet you can't exceed it and live to tell about it. Your max HR is based on genetics and it doesn't change based on your level of CV conditioning or fitness level. It simply is what it is.
Chances are none of us have ever achieved our max HR. It would be impossible for most people to push them self hard enough to max out their heart rate. But even if someone did push them self hard enough to reach max, it would be a miserable experience. You would see black spots and/or have tunnel vision, your legs would give out and you would fall to the ground feeling dizzy and disorientated, some people would fall unconscious, others would vomit, you would feel terrible. And even though that sounds miserable, the worst part is that even though your heart would not be in fibrillation, you would feel like it was, like you're having a heart attack, and you would probably want to just go ahead and die. I don't think I care to ever find my max HR.
If you go by the true definition of HIIT then you're right on as it requires a short 100% max effort for the work portion. Also, you should go from the rest phase straight to the 100% max effort with no delay which is either impossible or extremely dangerous to do on a treadmill. It's really semantics though because the net result is probably the same in that they both produce a greatly enhanced EPOC. I call what I do HIIT and I guess really it's not, but it is high intensity, and it is interval training, soooo...... You're right though, most of us do "intervals".
Bump for some more routines.