这些所谓的“通量绳’积蓄能量的方式与皮筋带被拉伸来积蓄能量的原理是一样的。

These so-called "flux ropes" build up energy in much the same way that an elastic band builds up energy as it's stretched.

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腘绳肌(大腿后部肌群)拉伸练习。

5hamstring stretch (back of thighs).

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通常，腘绳肌貌似意外的受伤，其根源都是长期的过度拉伸和休息不足导致的腘绳肌肌腱慢性劳损。

Often hamstring injuries that seem to occur suddenly are set up by a gradual weakening of the tendon over time, caused by overstretching and insufficient rest.

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通常，腘绳肌貌似意外的受伤，其根源都是长期的过度拉伸和休息不足导致的腘绳肌肌腱慢性劳损。

Often hamstring injuries that seem to occur suddenly are set up by a gradual weakening of the tendon over time, caused by overstretching and insufficient rest.

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