I've seen 210 bpm running up hills (I used the test method recommended by this book: http://www.amazon.com/Heart-Monitor-.../dp/0915297256)
But I've only seen high 190s bpm on my bike. This means that I can only hit approx. 93-95% of my true max HR on a bike.
Has anyone else who has tested max HR different ways experienced similar results? Any explanation? Maybe my legs are too weak...
EDIT: Here is an article that starts to get into some of these issues: http://www.slowtwitch.com/mainheadin...clingrate.html