SkipdiverJohn
Deplorable Brexiteer
- Location
- London
To make 'decent progress' in speed terms, whatever that really means, a person needs an efficient cardio-vascular system. It's not all just about big muscles, muscles can't function well with insufficient oxygen.
By "decent progress" I mean making time that is several times faster than walking the same distance. I often notice local BSO riders travelling so slowly on their crappy bouncer MTB's that it is painful to watch. I can't make my mind up if it because they are just too unfit, too sodding lazy to make any physical effort, or the bikes they ride are so terrible you would not want to break into double figure MPH.
I agree completely you need to be able to get enough oxygen delivered to the muscles, otherwise they are not going to work efficiently for anything but very brief periods. You can be strong and relatively unfit, but you can't develop much power and be unfit.