Standing with feet shoulder-width apart and cradle baby with both arms. Keeping a straight back and repeat deep knee bends.

双脚分开与肩同宽，双臂抱着婴儿。保持背部挺直，重复深膝弯曲。

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Tot squats (hamstrings) : Standing with feet shoulder-width apart cradle baby with both arms. Keeping a straight back repeat deep knee bends.

幼儿蹲坐(腿腱)：两手放在婴儿车上，然后双脚与肩同宽，保持背部挺立，然后重复弯曲膝盖。

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Deep knee bends, for example, may increase the range of motion (ROM) of the knee joint to the point where the knee becomes more susceptible to chronic or acute instability.

例如深度屈膝，会增加膝关节的活动范围，更容易导致膝盖的急性或慢性不稳定。

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"One afternoon I was doing telemark ski turns, which require deep knee bends, " says Gall, 48, an avid downhiller who lives in Vermont.

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