Low Resting Heart Rate – Does it matter?

by Jesper Bondo Medhus on May 30, 2009

Resting heart rate is not always equal to performance

Monitoring your resting heart rate is a good discipline to integrate in your daily procedures since it can give you some important information about your fitness. When you have registered your resting heart rate in the morning for a period of time (months) you will start to see a pattern.

There are days with low resting heart rates and there are days with high values.

Notice long term changes in resting heart rate

The most important observation for you will be that there is some but not a total correlation between resting heart rate and cycling performance.

Small differences in the same week has nothing to do with improved performance but is a lot more a question about level of recovery, sleep pattern, physical and psychological stress level etc. Differences observed over a longer period (months) might very likely be seen because of a central adaptation. Due to a better relaxation (regulated by autonomic nerve system) there is a better filling of the heart in the diastole and thus a larger stroke volume in the systole.

Don’t compare heart rate values…
As I have mentioned a couple of times before: It doesn’t make sense to compare absolute heart rate values with others because we all have a different anatomy. As an example, I have registered a low resting heart rate of 36bpm in a period with a very small amount of cardiovascular training.

I wonder how many of you hard training individuals who have the same value? That doesn’t matter! You are probably stronger than I was at that time anyway…

As you can see from the many comments (currently more than 136 comments) to my article ‘What is Your Lowest Heart Rate ever?‘ there are many people around in the world with low resting heart rates. Many of the comments illustrate that resting heart rate in it self is a good but not really good predictor of performance.

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Jesper Bondo Medhus
About the Author: Jesper Bondo Medhus is the medical doctor and cycling coach helping cyclists to ride faster with less training. He has compiled a very successful e-book with his best training techniques for time limited athletes and has just released the final version of his 12-Week Winter Training Program.

{ 4 comments… read them below or add one }

Geoff August 23, 2010 at 11:49 pm

You have to be very careful in correlating heart rate with fitness or longtivity, many of you are assuming that becuase you have a very low resting heart rate then you are either super fit or will live much longer than Mr or Mrs Average. That may be true but I have trained and ran with the world’s best athletes and it is true that many of the elite athletes have low resting heart rates but there are also a large majoroty that do not. Also, being underweight is generally considered to be a positive asset but you can be underweight and be extremely unfit.

james thornton March 17, 2011 at 4:47 am

my heart rate runs from 45 to 55 i am 87 have had a heart attack wow high should i let my heart rate go when i am just sitting around

Lee Curtis (UK) September 17, 2011 at 12:01 pm

FYI: My resting pulse rate is now 28.
I am 66 and swim 1K in the fast lane (sub 21 min) 5 times a week.
2 years ago my RPR was mid 30, and I could get 116 at the end of my final sprint.
Now it is 28 (taken on an ECG at the cardiac clinic), and I can only get 90 after the sprint.
Also have a 4 sec gap between beats in the middle of the night.
Have no dizziness etc or any ill effects at all, but Cardiac Clinic considers this is too low and am now to be fitted with a pacemaker in a couple of weeks.
(Does this qualify me for membership of the Zombie Club?? :) ).

Les October 20, 2011 at 1:23 am

My resting heart rate ranges from 45 to 53 and I take a cycle spinning class three times a week. Pretty high intensed. Should I be worried about it dipping to 45bpm? I will be 67 in December. I don’t have any dizziness or faintness.

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