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Why do parts of body go backward when we go forward

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  • Why do parts of body go backward when we go forward

    Dear biomch-lers
    Could you forgive me for some mistakes I have made.I did not purposely
    embarrass anybody here.
    We are surprised that our habitual gait has some difference from habitual
    gait of normal people while walking.Our arms are hung freely on our
    shoulder without any uncomfort when we speed up. Their movement nearly have
    no relation with legs. This is not ugly. That is the result of long period
    of Tai Chi and Ba Gua's training. This is not sarcasm:
    Is human keep the habit of forelimb on ground,even if human began to walk
    with their two legs long time ago? Are there enough joints and muscles and
    brain sources that we keep balance of walking without moving parts of our
    body backward? Does this gait lavish energy? Are there enough work that we
    have to do with our arms besides banlance?
    Does a child move arms backward when they begin to
    learn walking? His every bone can move. When he grow,some of them become
    still. When he have joint ill,some of them become poor. When he died,his
    every bone can not move. If we walk with this gait, are forces of joint
    different from normal gait? This is the foundation of Tai Chi and Ba Gua.
    We must keep nearly every bone moving except head bone,because we must move
    every part of our body around a series of smooth arcs in ideal status
    while practing.Is there value of health? My major is electronics and
    computer. My knowledge in biomech is limited. I have to ask specialist and
    scientist in biomech. Could you give me some suggestion? what can I do to
    analyze it?
    Thank you in advance.
    Wang Chengzhi
    Feb. 13, 1998