In reply to Dave Flanagan:
> But it's not as if front lever are actually pretty hard, certainly compared to climbing 9b. If climbing hard doesn't translate to front levers is it correct to say that front levers don't translate to climbing hard?
That's a really interesting question. Presumably the Cafe Kraft trainers thought they were useful to get Amma doing them in the first place - unless that was just more of a test to determine his strengths/weaknesses.
I think of it this way. If you climb you develop much of the muscles used in front levers but you're never actually activating them in that way. So additionally you may need to do some specific training to fire off the exact circuit of the front lever muscles. Likewise if you train front levers you're developing the muscle groups used in climbing even if not the specificity - though climber will get that from just climbing.
It's a bit like one arm pull ups. Very good climbers often can't do one arm pull ups. You probably will never ever need to actually do one whilst climbing. But strong climbers might not have to train very much at all in order to do them, compared to lesser climbers who are no where near able to do them.
I see both these exercises as demonstrations of strength in climbing related muscle groups.