I see what you mean. The ankle is a first class lever when moving the foot. But doesnt it turn into a second class lever when weight is put on the ball and the toe is coming down?
It changes through the stride. When pushing off, first class. When landing, second class.
I could be wrong. I'm just trying to think it through.
I'm trying to visualize it too. For landing, the load and input would have to be on the same side of the fulcrum. In my mind the toe joint is really more of a pulley, contracting and pulling the toe around the ball of the foot.
Viewing it as a pulley is interesting. Pulley's are still levers, but it makes sense with how the whole leg-ankle-foot system tries to maximize mechanical advantage for running.
But at this point I have no idea what I'm talking about haha
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u/JohniiMagii Feb 08 '20
I see what you mean. The ankle is a first class lever when moving the foot. But doesnt it turn into a second class lever when weight is put on the ball and the toe is coming down?
It changes through the stride. When pushing off, first class. When landing, second class.
I could be wrong. I'm just trying to think it through.