Absolutely, so long as the rate increased a reasonable amount when you exercised. I used to have fun with the Army doctors. On physical, they would take my pulse, which would be around 58 to 60 or thereabouts. Then they would have me hop on one foot to see if pulse increased excessively. Mischievously I would inspire with epiglottis fixed, making my pulse actually slow noticeably. None of them ever caught on. If they had had a bit more time, when I had to breathe, pulse would have gone up
more than it would have had I not held my breath.