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What is the medical explanation for low heart rate during exercise?
1 doctor weighed in

Dr. Bennett Werner
Internal Medicine - Cardiology
In brief: Several
There are several possibilities.
If you're a seasoned athlete, it's due to improved stroke volume (blood ejected with each contraction) requiring a reduced heart rate to achieve a given cardiac output (the product of sv and hr). Other possibilities are: medications, vagal reactions, chronotropic incompetence, av nodal block, or sick sinus syndrome. Incidentally, typhoid fever can cause it too.

In brief: Several
There are several possibilities.
If you're a seasoned athlete, it's due to improved stroke volume (blood ejected with each contraction) requiring a reduced heart rate to achieve a given cardiac output (the product of sv and hr). Other possibilities are: medications, vagal reactions, chronotropic incompetence, av nodal block, or sick sinus syndrome. Incidentally, typhoid fever can cause it too.
Dr. Bennett Werner
Dr. Bennett Werner
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