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Excessive heart rate during exercise...

I am 42 years old and recently started exercising again about 4 months ago.  On average I jog about 3 times per week with distance varying from 1 to 3 miles per day.  On average I run about 11 minute miles for distances over a mile and about 10.5 minutes for a mile (I have run as low as a 9.5 minute mile with the same results).  When I run, I use a very good Polar heart rate monitor.  After running, I download the run information and it shows that my heart rate usually jumps into the 170 bpm range within the first 3 minutes and slowly and steadily inclines to the 180 bpm range by the end of the run.  I know deconditioning has something to do with it as I have not done much exercising over the last 3 or 4 years.  However, I never had this problem when I was younger, neither as a teen or young man.  I served in the USMC and was always in the top 10 percentile or better with anything we did physically.  After the service I wrestled in college (at the age of 28) and have been a weight lifter since college with great results prior to the last few years.  Since starting to run again, I'm experiencing the very rapid heart rate during exercise but with no sypmtoms at rest.  My resting heart rate is approximately 72 bpm.

Since my run times are so slow with such a rapid heart rate, what could be the possible causes?  Does this sound likes something I can correct through exercise or should I see a cardiologist?  If I should see a cardiologist, should I see one that specializes in heart rate?
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612551 tn?1450022175
COMMUNITY LEADER
Yes, 60 to 100 rest HR may be "normal" for adults, but I'd expect an athletic person to run closer to 60, I did up to the age of about 65.  I quit running at age 67 when I when in to full time AFib and remain so now, two years later.  I'm drugged enough now with Beta Blocker meds that my HR has no meaning other than it isn't too high.

I'm not sure about your concern about damaging your heart is you work out at near your maximum HR, of approximately 180.  I have always exercised very near my maximum HR, and when 65 that was 155, which was the point at which I would start to consider slowing down.  As I always wore a heart monitor I would then try to hold at about 150 for 30 minutes or so.  Then too , I have AFib, so how much you want to take from my model could be none.  I do not believe my AFib and my exercise regiment are related.  I had a leaky Mitral valve that caused my left atrium to enlarge to a point that it caused AFib.  The valve has been repaird, back when I stopped running at age 67.  Still not running as I can't shake the AFib.
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Avatar universal
To be honest, I don't know.  I really only started using the HR monitor on a very limited basis early last year and didn't start using it regularly until a few months ago.  And before that I never had a concern over the actual heart rate....from the issues I had with running I automatically assumed in the beginning that it was a lung related issue (asthma - reg or exercise induced, etc.) and pursued treatment on that basis.  After seeing my heart rate and finding that all other tests came back negative, I have to assume it is the heart.  From all the reading I'm doing on the topic, the normal adult heart rate (very generally) should be between 60 and 100 bpm with 75 being considered the average for a normal healthy adult.

As far as the heart rate during exercise, from everything I've read I'm about 20 to 30 bpm higher than I should be for endurance exercise.  My heart is beating between over 170 bpm for 20 to 30 minutes.  From what I understand this can damage my heart if done on a regular basis.  Over a period of 4 months, shouldn't there be some decline in my heart rate when running at the same pace?
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612551 tn?1450022175
COMMUNITY LEADER
The running HR doesn't strike me as too high for someone who is working up to running again.  The 72 at rest seems a bit high, however.  Has you rest HR always bee high?  Given you physical activity history I'd expect a HR in the low 60s to be expected.  I say this knowing that some people have a higher HR, suppose it has something to do with the size (volume) of their heart relative to the size of their muscles/body.
Helpful - 0
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