http://www.miaware.org/mi-journal/education/mi-warning-signs A Heart Attack Awareness and Prevention Initiative Wed, 20 Oct 2010 06:00:59 +0000 hourly 1 http://wordpress.org/?v=3.5.1 http://www.miaware.org/mi-journal/education/mi-warning-signs/comment-page-1#comment-52 Stephen Sun, 25 Jul 2010 02:51:55 +0000 http://www.miaware.org/?p=48#comment-52 Very happy to read Scott’s blog, timely. Just yesterday I was trying to find answers to questions regarding max heart rate (MHR) and the maximum time someone my age, 62, should maintain 90% of MHR during workouts. I routinely ride for 1.5 hours 3 days/week of which I spend more than an hour at a time at 90% MHR. My computer tells me that I average over 90% of MHR for the TOTAL ride. I’m beat when I get home; I take a shower and must nap. Is that too much effort for too long a period for a 62 year old idiot? Am I setting myself up for catastrophic heart failure? I am clinically obese, high cholesterol, retired/sedentary, family history of obesity and heart attacks, et al. I no longer take statins because I don’t trust them and assume my cholesterol has returned to high levels, but I had my arteries checked via ultrasound and they are clear…nevertheless, I still wonder if I need to back off to 80%. Does anyone have experience with MHR as it relates to age that they will share?

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