Stretching consists of static stretching and dynamic stretching.
伸展运动包括静力性和动力性伸展运动。
A study presented this year at the American Academy of Orthopaedic Surgeons found that such static stretching before a run neither prevents nor causes injury.
美国骨科医学会今年展现的一项研究发现，这种跑步之前的静态伸展既不会防止亦不会导致受伤。
Static stretching and dynamic stretching, which perform as guide of flexibility training, have different mechanisms on physiology, so the effects are different.
动力拉伸和静力拉伸方法的生理学机制不同，因此，在拉伸效果方面存在着差异。
"There is a reflex that prevents the muscle from being stretched too much," which is activated by static stretching, inducing the muscle to become, in effect, tighter in self-protection.
而这种反射波是由静态拉伸激活的，会导致肌肉紧缩以进行自我保护。
Also, don't bounce while stretching. Holding your stretch in a static position works best.
同样拉伸的时候不要蹦跳，以静态位置保持拉伸姿势最好。
Also, don't bounce while stretching. Holding your stretch in a static position works best.
同样拉伸的时候不要蹦跳，以静态位置保持拉伸姿势最好。
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