I purchased a Polar heart rate monitor today because I have been inactive for many, many years, and I had no idea where my heart rate has been this past week while getting back to moving and doing my cardio work. My goal is to get fit—not dead!
So for my age (50), using the simple 220 minus age calculation, that gives me a maximum heart rate of 170. To train at 75% of my maximum heart rate would give me a heart rate of 127.5.
Tonight, I strapped on my heart rate monitor and walked to the end of the driveway (it’s kind of long) just to get a feel for how it worked and what my heart rate would be with such an easy task. My heart rate was up to 122 according to the heart rate monitor. I know when I’m on the Gazelle in the morning that my heart is pumping much harder than it was when I walked down the driveway.
I know I am horribly out of shape, but if I was at 122 just walking down the driveway, then my heart rate has been much higher when I’m on the Gazelle. Not only does that concern me, but it brings me to my questions. If I am at a heart rate of 127, then I won’t even be breaking a sweat on the Gazelle. I’ve worked my way up to 40 minutes and I guarantee that 20 of those minutes have been at a heart rate much higher than 122. Do I work at a pace that keeps my heart rate around 127 even though I am not even breaking a sweat? If so, as I get into better shape, will it become a matter of it taking more and more for me to reach 75% of my maximum heart rate? I’m very confused.
Thanks so much for your help.

