The maximum isometric force and moment arm at the pose shown of three major musc

Question

The maximum isometric force and moment arm at the pose shown of three major muscles crossing the ankle (gastrocnemius, soleus, and tibialis anterior) are given below. Use this information to decide which muscle(s) will be recruited to generate a required ankle plantarflexion moment while minimizing a particular objective function Muscle mx (NPtarflexion Moment Arm (cm GAS SOL TA 2000 3500 900 4 -4 Joint Moment Obiective Function 50 N m 150 Nm 50 N m 50 N m ? (Forces ?(Forces) (Forces/Fmax) 2(Forces/Fmax)2 Circle musclels) that will be recruited GAS GAS GAS GAS SOL SOL SOL SOL TA TA TA TA

Explanation / Answer

By using the given information, Gastronemius and soleus muscles will be recruited to generate a required ankle plantarflexion moment. Plantarflexion moment arm is positive in case of gastronemius and soleus muscles in the given data in the body question. These two are main muscles to bring plantarflexion moment at the ankle joint. Other muscles are tibialis posterior and plantaris causing help in plantarflexion moment at the ankle joint.

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