CanFitPro Personal Training Specialist Practice Test

To generate maximum force and optimal contraction of upper-body muscles, it is important to stabilize the shoulder girdle before contraction. Options A and D are incorrect because increasing the length of muscle fibers or reducing the speed of contraction will limit the force and contraction ability. Option B is incorrect because decreasing the neural control will result in less efficient muscle contractions. Therefore, option C is the most effective and appropriate strategy for achieving maximum force and optimal contraction of upper-body muscles.