I've been running with a Garmin 110 for over a year now. Just after Christmas, I bought a compatible Heart Rate Monitor...the results of which have surprised me. I'd appreciate comments, please.
Here's the background. I'm 49, so - according to everything I've read - my maximum heart rate (MHR) should be 171 bpm (220 minus 49). I should be running (aerobically) at around 111-128 bpm (65%-75% of MHR). Yet when I ran 11- 13 miles several times recently, my average heart rate was 142-144. I ran these without feeling breathless - fairly easy runs really. On sprints / hills, my heart rate can peak at anywhere between 162 and 173 (the latter exceeding the theoretical MHR!) I recover from these fairly quickly. In short, it's all manageable.
I've run a Half Marathon in 1hr40mins as recently as last October, and never exceed 2 hours for the distance, even on an easy run. I don't smoke, eat healthily, am 6' tall and 12st 8lb, so am in no way overweight.....so why are these readings so high and yet I'm not suffering in any way I can discern?
I've read that theoretical Heart Rate recommendations become less accurate the older one gets, but an aerobic range of around 142-144 would be 'correct' for a 30 year old! I'd be interested in your comments - particularly from some others approaching 50! Cheers - Pete
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