given the same effort, my avg hr when running goes much higher then when cycling.
this is understandable in a way. when cycling the heart needs to pump less frequently to assure the needed oxygen level, ... because of the position of the body i guess.
but why such a huge difference?
in my case, a medium intensity training means:
- 140bpm, when cycling
- 160bpm, when running
- if cycling, when i try to push hard, unless there's a long steep hill, my heart never reaches the anaerobic threshold
- if running, oh ... so easy to reach that point!
is it maybe because the muscles i use when cycling are not as developped as those i use when running? is it a problem of muscular efficiency?
if the answer is yes, are there exercises (trainings) i could do to counterbalance the situation and be more efficient when cycling?