Quadriceps Stretch: the quadriceps is the muscle in the front of the thigh, important for lifting your knees and increasing your speed.

拉伸股四头肌：股四头肌是大腿前侧的肌肉，对于你提升膝盖和提高速度很重要。

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The quadriceps at the front of the thigh straightens the knee.

大腿前侧的股四头肌使膝关节伸直。

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The quadriceps along the front of the thigh straightens the knee.

股四头肌和大腿前侧使膝盖伸直。

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In addition, make sure to continue your strength training, and focus on strengthening your quadriceps (front of the thigh), which are important for runners.

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One of Volz's quadriceps muscles, or thigh muscles, is about 30% weaker on one side than the other, Hewett says.

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His condition, patellar tendinitis, can be described as inflammation of the tendon that attaches the quadriceps (thigh muscle) to the tibia (shin bone).

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