If I normally train at N bpm during a run and start doing some training on a bike, should I expect to get an equivalent session at the same HR? And would you normally experience the same perceived effort? I've read in a few places that there is supposed to be some differential of 10-15bpm (lower on the bike) which doesn't make any sense to me at all. I would say I feel very comfortable (too comfortable!) at the same HR on a bike as compared with on the run.
Surely as far as internal (cardiovascular) processes go, a hr is an hr? irrespective of my external efficiency at the different sports.
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If I go by perceived effort - the cycling is harder to get up to the running heartrate.
If you're fitter on the bike then it will feel easier.
I understand your argument about the muscle groups and I know that a fair bit of oxygen has been shown to be consumed by both the arms and torso when you run, but on the other hand if that isn't needed during the bike then your heart can concentrate on pumping mostly to the legs, provided you've capilliarised the leg muscles sufficiently, so shouldn't the figures even out?
sorry if I'm being dense.
It's a tricky subject, so you're not being dense at all. As you say - it would also depend on how well trained you were at both. Your HR may not be a limiting factor if say you had weak cycling legs ?
Maybe a race situation would give a better reading. So do a 10krun vs say a 25mile TT on the bike ?
I thought you were a good cyclist Cougie?
{cheap shot}
(alas - those days are gone....)
I meant a running race.
Your max heart rate is your max heart rate wether you are running, cycling, swimming or picking your nose, it is by definition your MAX heart rate and can therefor only have one value.
I do tend to have my HR sitting around 15-20 bpm lower on the bike when I'm out and about.
So a walking MHR wouldn't be as high as a running one ?
And a scooting MHR wouldn't be as high as a bike one ?
So when we talk about MHR we usually mean for a given activity. I think.
Walking 50% of MHR
Brisk Walk 60% of MHR
Easy Cycle 60% of MHR
Easy Run 70% of MHR
Hard cycle 70-80% of MHR
Hard Run upto 85% of MHR, etc etc.
Thats kind of how I think of it when I'm trying to work out what I'm doing.
Also you might find it easire to get a higher HR on the flat on the bike as higher cadence rather than gear crushing on a hill at very low cadence. I find my HR rarely climbs that much on a hill but can do so if I do sprints on the flat with short recoveries.
I work with different MHR for bike, swim and run...
Well what I mean to say I use these virtual values to work out my ranges.
Well what I mean to say is that i've worked them out and don't bother putting on my HRM.