Originally Posted by LiquidFeet
Tog, I know you ski on the sides of your feet. Translation: sometimes your foot's LTE feels pressure inside the boot, and oftentimes your foot's BTE feels pressure inside your boots, and your skis are tipped on edge while this is happening. To balance, there's some counter and angulation going on, in a sustained way. That's just different from climbing around on soft shoes that won't allow you to get and stay on the sides of your feet because they crumple if you try.
If you aren't on the sides of your feet, your skis are flat on the snow and Tog I feel sure you don't ski that way much.
Yes the feet/boots are tipped, but-
Most of the force is going through the bottom of your foot. The rigid boot helps with the side part. When the skis are tipped on edge, even 60degrees, it's just like the foot is on a tilted platform. What's the difference between that and running on boulders when you have your feet way out to the side at similar angles? In some ways with skiing it's easier on the foot/ankle because the boot supports it. In skiing, it's much more like being on a tilted platform than running sideways on boulders. There's probably a limit to how much leg angle one can get in running less than skiing because there's no ankle support.
My point is the primary balance input is coming from the bottom of the foot. As far as the feet are concerned that is Has something to do with stabilizing/tensioning basically a 3 point triangle from heel, ball, 5th met. After that, I'm out as far as understanding.
We do not "balance on the sides of our feet". You're going to have to back that up if you're making that claim because we're just not built that way.
This stuff gets seriously complicated. I'm not sure the mechanism of just walking is fully understood even now and everyone agrees.
We do not develop a different balance system just because we ski. We use what we have in different ways.
I'm still with Chad in that the core has the most effect overall on balance. I don't understand it, but I'm confident it does. That doesn't mean one ignores the feet or they aren't important. That would be like saying tires aren't important to a race car.
Mosely Again. Feet/legs are tipped. If in boots it would be only a little different.
Not a great example below, but when the jump and they're feet/legs are out to the side landing it's not much different than skiing. In skiing you'd have both feet over there at once. I figured I could find some free running/parkour videos, but it's all jumps and flips with them. Still, at times one could be running these rocks with the feet/legs way out to the side as in skiing.
Originally Posted by borntoski683
We balance on our edges the vast majority of the time. We spend very little time actually standing on the base of our feet.
The footbed design of course is felt when standing in the shop, or when straight running, but during 99% of a ski turn, we're actually balanced on the edge of the ski. You say its just a tilted platform, but that doesn't make sense. your weight is directed to the inside edge, not the bottom of your foot. Skiing is all about balancing on one inside edge of an outside ski, then through transition transferring balance to the other ski on the other edge to turn the other way. We don't do that at all while walking or running.
We spend all our time with some input coming into the base of the feet. Except when in the air.
Even though we are usually tipped, we do not "balance" on the sides of our feet.
Show me biomechanical arguments for the balance system centered on the side of the foot. Maybe it exists, I really don't know. I highly doubt it. Everything comes from walking/running.
If footbeds were just for the store, no decent skier would want or need them because they rarely are standing with their legs 90degrees to the slope while skiing. Yes, they're always tilted. Some skiers don't even want footbeds btw. Good ones I'm talking about.
The force in a turn is still mostly coming from the bottom of the foot. That's why racers have that leg way out there tipped at 60degrees. They are at that point getting little force from the side relative to the bottom of the foot. Some of those guys are doing over 2.5g's on a turn. That has to go through the bottom of foot and through the leg bones. Maybe @Jamt can weigh in on the physics of it.
The Tilted Platform. The vast majority of force is coming from the bottom of his foot. Not side. He's balanced from the bottom of his right foot. Ok, we could argue the balance part of the body, but his ground support is coming from the bottom of the right foot which is a significant balance input.
Edited by Tog - 1/24/14 at 9:56am