Another thing to consider is your posture on the bike. If you are climbing fairly "tall" you will experience a different effect vs. staying lower in that "attack" position (elbows flexed, hips back, torso low) and using that as your starting point for getting out of the saddle. I would suggest adopting your riding posture rather than focusing on training smaller muscles. The forces generated on a bike are far below those generated in a gym, so performance is rarely a lack of strength.
By lowering your center of mass along the length of the bike rather than thinking about this vertical position teetering on a balance point somewhere in relation to the BB, you can alleviate any issues with wheel slippage and having the knees too close to the bars, etc.
A great reference is the book, "Mastering Mountain Bike Skills" by Brian Lopes and Lee McCormack. It gives a lot of insight into body position and how it affects your riding, along with plenty of pictures.
Originally Posted by comprex
Originally Posted by BushwackerinPA
you dont want balance towards the front wheel you want it somewhere in between the wheels if not biased alittle bit back.
Right, I got that; it is what actually prompted my question.
I understand what you're saying about optimal on-bike results.
I've been trying to say that my body finds 3-5" forward of that balance point (FAR!) easier to work with, and I was pondering if this didn't mean too much gym time training hamstrings and not enough skate time and flutter kick time training the smaller muscles amongst the hip flexors, e.g. in the upper quadricep region.
I kind of half-dropped skating this summer to focus on rowing, and I think this might be a consequence.