This discussion focuses on calculating the leverage on the lower leg during a squat and the force exerted by the thigh muscle. Key factors include the effective lever arm of the quadriceps, which is approximately 5 cm, and the computation of external torque using ground reaction force and inverse dynamics. The conversation emphasizes the use of trigonometry and crank calculations for force distribution, while expressing skepticism about the realism of the movement model presented.
PREREQUISITESBiomechanics students, physical therapists, strength coaches, and fitness enthusiasts interested in optimizing squat performance and understanding lower limb dynamics.
You have to look up the effective lever arm of the quadriceps at different knee flexion angles. It varies based on patella anatomy, but is roughly around 5 cm. The external torque can be computed from the ground reaction force, by inverse dynamics (if you care about the shank and foot mass), or just from the knee position.tomlib said:How can I calculate the leverage on the lower leg during a squat and the force that the thigh muscle must exert in order for the body to perform the squat. Can you help me?
A simple squat?tomlib said:This movement seems unrealistic to me.