Torques act in the sagittal and frontal planes and they also act in twisting Ski

Question

Torques act in the sagittal and frontal planes and they also act in twisting Skiers suffer many more Knee injuries than Explain why with special emphasis on torques. A "squat" is a weight lifting exercise that begins while standing upright with a barbell supported on the shoulders The knees are flexed and then extended, trying to keep the back fairly straight upright. In terms of torques, moment arms and muscle forces, why is it so much more difficult to do a full, deep squat compared to a "half squat" in which you only squat down part way before

Explanation / Answer

Torque and moment of force is rotational force.The magnitude of torque depends on three quantities:

*the force applied,

*length of the lever arm connecting the axis to the point of force application and

*the angle between the force vector and the lever arm.

The moment arms work on knee and hip joints with some common squat variations.

For full,deep squats, it is lower than parallel and even the full motion squats.Full squat definitely brings the knees slightly further than half squats.

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