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Yesterday on my new highest peak, I got up to 191, then quickly recovered to 165, 145, 121 in the 3 minutes following. I thought 191 was crazy high until I read Shannon's!! And dh had been telling me, oh we're not supposed to go higher than the 80% mark that's listed on the treadmill! I said, nope, that's 'old school,' we're supposed to do HIIT now which is waaaay above working at 80%.Originally Posted by elisa822
Last question for all you HIIT kids. Any idea what your HR is at the high point? I'm only going by the treadmill HR monitor and it takes a few seconds to kick in when I go down to the walking speed but it looks like my top end is around the high 160's...and I'm breathing hard. It drops about 20 beats in about a minute and a half and then I start speeding back up again. I know it's partially age based, I'm just wondering if anyone else tracks their HR during their HIIT workouts.

. I had to go for an ECG & a stress test in October because of a newly detected leaky heart valve causing a murmur, and the cardiologist told me I had great VO2 levels and that my resting and exercising heart rate were excellent for a woman my age , not to change a thing. (Man, I hated hearing that phrase 'woman your age' though...
THere's a book called Ultimate Fitness: the quest for truth about exercise and health by Gina Kolata that - among other stuff - discusses the "accepted" formula for maximum heart rate. It's quite interesting. It's a 2003 book, so you can likely find it in in your libraryl



