weird maximum heart rate numbers

[firedudecndn]

Hey all,

Thanks in advance to those who reply with concrete information. Without being rude, please don't speculate, I can do that enough on my own :yelrotflmao:

I found some weird numbers as I was doing some maximum heart rate testing:
Yesterday I did a 2 mile warm up at a nice medium pace, let my heart rate recover then a 3 minute sustained run at about 9 miles per hour on a treadmill. I then walked for about 5 minutes and then another 3 minute sustained run at 11 m/h which was about as fast as I could go for the full 3 minutes. I managed to acheive a MHR of 187. This past summer during a mountain bike race I acheived a MHR of 198 and last winter while cross country skiing I hit 203 MHR. To me, this doesnt make sense, I would think that running would be where I hit the highest MHR.
Here's the background. I run off and on, I do a 5 or 6 mile runs about once every 10 days or so with shorter runs in between and about every 3rd run is HIIT. I ski alot in winter and have since I was about 10.
I race mntn bikes and I rode about 4000 kms last season. I've been riding bikes since I learned how as a kid.
Are these bizaar numbers because my body is well trained in skiing and biking but not so well trained in running? Or is there a different explanation.
Also, should I be concerned about an MHR of over 200?
(for the record, I've done several tests and found the same results)
Here's the bio info for background:
Male, a week shy of 40 years old, 205 lbs, on a scale of 1-10; 1 being couch spud and 10 being olympic athlete in prime I would rate my fitness level at 8ish. Resting heart rate average 48 and recovery from intense workout my heart rate drops dramatically in the first 30 seconds. (180 to 130)
Thanks again to all who answer. Happy festivus...

 

[*AJ*]

Try the same test again, but run outside and UPHILL for the max test portion. I'll bet it will be higher.

Running a treadmill is not the same as running on solid ground.

 

[matt182]

My guess would be first

The skiing is the most taxing on the body (ive heard its one of the toughest sports in the world) and also your quite good at it, so the more work is asscociated with higher HR.

CO = HR * SV

Pretend the cardiac output is the same for all three exercises, so it is dependent on the other two factors.

Maybe with the running, which is whole body and allows arterial dilation which increases stroke volume and hence a lower HR is needed for the same cardiac output. The bike is not whole body and the large leg muscles would be restricting the large arteries in the thigh increasing resistance and therefore higher HR.

Generally the more supine you are, swimming for example, will have a lower heart rate for the same intensity because more blood is returned to the heart.

Anyway, your results could be effected by a number of things such as hydration, temperature, training, and most importantly intensity. Which i assume is all equal?

 

[andy5579]

My BPM when running usually peaks at 220-240 on the shorter runs (3 miles, 16 minutes) but that seriously tires me out