Major Muscles and Actions Involved
In the lunge, extension occurs in the hip and knee joints. In this action the thigh moves away from the shin and pelvis as the leg is straightened. In addition, the erector spinae muscles contract isometrically to stabilize the spine.
With some minor exceptions, it can be said that the lunge is valuable in all the sports mentioned in the section on the squat exercise. However, the lunge also provides other benefits, such as development of hip joint flexibility, which is very important in sprint running. In the push-off, the greater the flexibility of the hip joint flexors, the longer is the stride that can be attained.
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