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Heartrate(5 posts)

Heartratetts
Nov 14, 2001 3:25 PM
I notice that my max heart rate is about 180-190 for cycling. I could only maintain that for a few minutes. But when I am running, I could maintain that over 10 mins. Has anyone notice the same thing if you are doing different activities? How come I cannot maintain the same heart rate, with the same time frame, for cycling as I would have for running?
SpecificityKerry Irons
Nov 14, 2001 5:48 PM
Are you a highly experienced cyclist AND runner? If so, you would expect the same max HR for both when going flat out. If you are a less experienced cyclist, you may be limited by technique. The statement that you "could only maintain that for a few minutes" vs. "could maintain that over 10 mins" is a little confusing. Is a few minutes 1-2 or 5-7? Is over 10 minutes more like 30? Or are you saying you could maintain your "max" for 5 minutes longer when running. Further, a true max is obtained at the end of a step sequence and is delivered at your absolute limit for a very brief period. And further yet, your max is not expressed as "180-190" but rather a specific number (which may vary by a few beats, but not by 10).
more on specificityjacques
Nov 14, 2001 6:40 PM
Heart rates are specific to the type of activity you perform. The numbers for your cycling might be very different than the numbers for your running. For one, heart rates go up in direct proportion to the muscle mass you are moving - and running involves more muscle mass than cycling.

In addition, a horizontal position lowers your heart rate over a vertical position. You can actually see that when cycling: ride on the drops at a steady heart rate for about a minute. Then stop pedaling, take your hands off the bar and sit straight up. Your heart rate will go up almost instantly, even though you stopped working. Had you stopped pedaling and stayed on the drops, your heart rate would have gone down almost instantly.

And to emphasize one of Kerry's points: maximum heart rate is a specific number, not a range. It would be good if you could find that number. Almost all high-performance coaching is based on percentages of that number. It does change as you gain or lose fitness.
more on specificityMel Erickson
Nov 14, 2001 8:43 PM
Max heart rate changes as you age but not as you gain or lose fitness. If you are more fit it may take you longer to attain your max and you may be able to hold it slightly longer but your max is your max. Pretty much set by age and genes.
caveat...guido
Nov 15, 2001 1:48 PM
I always thought when you sit up after a hard effort and your heartrate goes up, it's because it's trying to get blood back into your head and upper body, that you lost by sitting up. Think about it. Ever felt dizzy after suddenly standing up? Same thing.