1·Engage your quadriceps (front muscle on thigh) and extend your torso until you can melt over your legs.
使用你的四头肌(前面的大腿肌肉)并延长你的躯干直到你能够将你的腿弄软。
2·This exercise helps you to maintain quadriceps strength.
这练习帮助你保持四头肌力量。
3·The research focused on eccentric exercise, which creates a motion similar to the way in which quadriceps in human thighs are exercised during a downhill run.
该研究主要关注离心运动，该运动在下山的过程中人类的大腿股四头肌所经历的锻炼相似。
4·Quadriceps flexibility is crucial for the drop-knee move so frequently required on difficult overhanging routes.
四头肌的柔软对在悬岩要常做膝盖向下的动作很重要。
5·Knee injury scale and strength of quadriceps femoris were used to evaluate the effects.
用治疗前后膝关节损伤评分和股四头肌肌力情况进行评定。