Anyone with Bradycardia? RHR=37


#1

Hi all

Does anyone out there have Bradycardia (slower than normal heart rate, i.e. less than 60bpm)?
My resting heart rate has always been low and I used to run competitively as a teenager. I am reasonably fit now (3.3W/kg) but nowhere near peak fitness, so I don’t think that can explain it.
Now that I have a Garmin 735XT and i have 24/7 HRM, my resting heart rate is recorded between 37 and 40.

My heart rate jumps right up when exercising and my zones appear normal compared to others.
I’m just wondering if anyone else has it to share any experiences? My wife is convinced that it is linked to the fact that I seem far more susceptible to colds, flu and viruses!


#2

Gonna predict that a vast number of TR users fall in this category… My RHR is usually around 42-45.

What you consider ‘nowhere near peak fitness’ is still probably significantly fitter than the ‘average joe’.


#3

Yeah, I got a Garmin 235 a few months back and my RHR is usually in the high 30s, occasionally it will be low 30s. Never thought much about it other than must have a strong heart, which I guess most endurance athletes have. 10yrs ago when doing triathlons I used to measure my HR upon waking everyday with a chest strap and it was low 40s, so I believe the Garmin.


#4

@Timmy2shoes Yep I have that, even before heavily training my hr was low, now it’s generally resting about mid 30’s and my max is only 175 (and I’m just 34). Recently completed a Chester step test and didn’t even hit the expected 80% max by the end of the tape.
I only know this because my HR occasionally jumps around and flutters a bit, kind of as a jump start to keep the pressure up when my rest hr gets a bit too low so I went to get it checked.
I’ve been told it’s nothing to worry about, and my fitness has rocketed over recent years so I wouldn’t worry unless you’re feeling light headed or dizzy or getting pains!


#5

Thanks, that’s a good point. I wonder what it would be if I was properly fit though as it’s can’t get much lower?! Only one way to find out I guess :slight_smile:


#6

Yes similar for me, max HR on a bike is usually around 175, last few yards of a 5k is 190 though!

Thanks for sharing your experiences. I’m only concerned really when I hear “endurance athlete” if I compare myself to triathletes, club runners and cyclists, as I’ve never run a marathon, never even tried a triathlon and I only fit in around 5 to 10 miles running a week and 2 to 3 hours on a bike. So I don’t really consider myself much of an endurance athlete at the moment.


#7

Just go along with it :smile: it’s aleays fun to freak out medical professionals when they don’t expect it. The last one didn’t believe me and had to check for himself (hang on, does that mean I look out of shape?!)


#8

While in the general population Bradycardia can be sympomatic of some forms of heart disease, Exercise Induced Bradycardia is generally seen as beneficial and not a cause for concern.

Because cycling is often a long-duration activity (as compared with running or many team sports), cyclists tend to have very well adapted aerobic energy systems - which is also associated with a low resting heart rate. I would agree that the majority of regular TR users probably have RHR’s in the mid-40s or even into the 30s.

Personally, I find mine is normally 40-42, perhaps dropping to 38-39 in a recovery week. If I see it 45+, I know I am either accumulating fatigue, or am about to come down with an illness - either way, it’s about time to back off from my training somewhat.

Low RHRs are probably more associated with your base fitness, than “peak fitness”. Peak fitness is more about anaerobic capacity, muscular endurance, etc.