Lie facedown on a leg curl machine, and hook your ankles under the padded bar.

平躺在长凳上，双脚置于地面。 正手抓住杠铃，你的双手比肩稍宽。

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Intimately involved in the fight or flight response, the psoas can curl you into a protective fetal ball or flex you to prepare the powerful back and leg muscles to spring into action.

与我们的自我保护意识紧密相连的腰肌可以让我们面临危险时收缩卷曲进入自我保护的胎儿状态，或是伸展延长来支援坚实的背部和腿部肌肉来处于战斗的状态。

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Base on elucidating the meaning of "curl leg-drive technique" and the hip-drive , the article analysis the linkage between the two chiefly from the physical view .

在诠释“屈蹬技术”与髋动力学说内涵的基础上，着重从生理解剖角度分析了“屈蹬技术”与髋动力学说的内在联系。

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