ACE Personal Trainer Practice Exam

What is the function of synergist muscles?

1. To oppose the action of agonist muscles

2. To assist agonist muscles in a desired action

3. To stabilize joints during movement

4. B and C only

The correct answer is: B and C only

Synergist muscles play a crucial role in assisting the agonist muscles, which are the primary movers responsible for a specific action. They help the agonist by facilitating the desired movement and providing additional force or stability. This assistance becomes particularly important during complex movements where multiple muscles need to work together efficiently. In addition to assisting the agonists, synergists also play a stabilizing role by helping to stabilize joints during movement. This stabilization is essential for maintaining proper alignment and preventing harmful movements that could lead to injury. By keeping the joints steady, synergists ensure that the movement can be performed smoothly and effectively. Therefore, the function of synergist muscles encompasses both the assistance of agonist muscles and the stabilization of joints during various movements, making the combined option of these two aspects comprehensive and accurate.