I went for a gentle spin on the TT bike today with the aim of trying Z2 training . No chance of me doing that ! I'd fall off the bloody bike going that slow and my heart rate goes above that just thinking about riding !
Z3-4 seemed an easy pace and I tried my best not to push it as I have a 25 in the morning .
I have my resting and max heart rate so I'm pretty sure I've got the zones right . Anyone else train at Z2 ?
The thread is filled with bickering so I'll go back to the beginning and ignore the rest.
Z2 training is easy - once you've spent time getting used to it. On a bike it is easier to stay in Z2 than when running, riding is *generally* 10bpm slower for the same output as running.
Ther are many ways to calculate heart rates, the method I use to determine my Max heart rate is through a treadmill flat out for twenty minutes. Or flat out the last twenty minutes of a run. This is "dizzy and/or sick" flat out.
I then note my max observed heart rate throughout my training - even climbing 25% gradients I've not observed my max on a bike, but only about five beats off.
I then calculate zones as a percentage of my max.
Here's a calculator that shows the many methods output:
http://www.digifit.com/heartratezones/training-zones.asp
Training in zone 2 is not supposed to feel hard work, the point is that relatively gentle exercise over time builds your strength and endurance better than beating yourself up every time. This way, when it comes to a race you are more likely to do better.
As usual, most people's intuitive approach to work out as hard as they can is wrong.
Unless you've done an appropriate test, I doubt your Garmin knows your real max heart rate.