This paper deals with the mechanics of the human leg and forces in the muscles, ligaments, and joint contact in the leg during a squat jump exercise. An inverse dynamics approach is used in this work. A 2-D dynamic model of one limb in the sagittal plane is used to investigate this ballistic task. Results are then compared to data available in the literature. They show good agreement. The response of the ligament forces and the tibio-femoral contact point location during the exercise are reported.

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