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Originally Posted by ryfo
Hope you can help....I go to gym and want to really get the most out of the treadmill, but I take 150mg of a beta blocker everyday. As this slows the heartbeat I was wondering what would be the best way to find out what min/max heartrate i should have while working out? I know its not the normal as my doc has made the comment that there is no way I could reach that rate but gave me no clue as to find out the heartrate that i need to acheive. Any ideas?"? Thanx
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unfortunately, you're not going to be able to work out based a HR range. the beta blockers make that impossible. you'll need to work out based on your "rate of percieved exertion."
http://www.cdc.gov/nccdphp/dnpa/phys...d_exertion.htm
even taking an o2 test (which doesn't tell you much about your HR) won't do you any real good. the reason is because there are too many variables. your max heart rate without taking the beta blockers is going to be
x. right after you've taken the BB and they've started to kick in, your new max HR will be
y, 2 hours after taking the BB the effects of them will produce a new max HR because they won't be at their full effects anymore. the futher fromt he time that you take your pill, the less the effects will be. So you can't go based on numbers. You can try to use them as a guide, but unless you take the BB and workout at the same time each day (with the same amount of time between them) and eat the same things when you take the BB (different foods can cause different rates of absorption into the blood), you'll never have the exact same results. even if you do keep everything the same, there's no gauruntee that you can use the same numbers each day. so get numbers if you'd like, but they'll at best be a very relaxed guide.
exercise based on how the workout is making you feel will be a much better method of determining your workout intensity each day. also, if you're ont he beta blockers because of a cardiac event, you might want to call whomever you did your cardiac rehab with and see about having them help you set up a program.