Saturday’s cardio run was substandard. That made two poor runs in a row, but rather than be stubborn, push myself too hard, and try to match previous runs, I used the heart rate monitor on the treadmill and stayed in my intended training zone.
That seemed to help, because I ran some good intervals on Sunday: three 1000 meter runs at a better pace and with less rest in-between than when I did this workout two weeks ago. YEAH, that’s more like it!
I really like being able to track my pulse on the HealthQuest treadmills. I think that it gives me a much more accurate analysis of how I’m progressing and how hard I’m pushing yourself. But I did have one concern.
On my “easy” days when I’m not running intervals to build my anaerobic conditioning, my goal is to train at the upper limit of my aerobic capacity (80% of maximum heart rate). According to the standard heart rate tables, this would be 136 beats per minute (BPM) for a person my age.
But I feel comfortable pushing into the low 140’s and have been using that as my cut-off point. Given the two poor runs I had this week, it got me thinking that maybe I was pushing a little too hard on my easy days. To know for sure, I would need to get a more accurate reading of my actual maximum heart rate (MHR).
The standard way to approximate MHR is to subtract your age from 220. But there are a number of ways to get this information personalized. One of the easiest and most widely accepted is the Karvonen Method, which factors your resting heart rate (RHR) into the formula.
So for the last couple of mornings before I got out of bed in the morning I took my pulse. What I found is that I have a low RHR (47), and this means that my MHR is higher than average. Using the Karvonen method my 80% of maximum actually calculates out to 145 BPM.
So it turns out that I had intuitively been almost spot on in my training program. I am still aerobic in the low 140’s and that’s why I can stay there without much problem. And as soon as I push into the upper 140’s life gets pretty miserable pretty quickly. Going anaerobic is just not my thing!
Training for a 1K run in not something I particularly enjoy, nor am I naturally predisposed to being good at it. So I am trying to train as efficiently and effectively as I possibly can. That means using any and all resources available, and heart-rate training has definitely helped.
For more information on heart rate training and calculating your maximum heart rate, try this site: heart rate training