One of the important functions of strength training has become the development of the muscle and tendon as a unit. The muscle-tendon unit attenuates and dissipates force. Developing a strong musculoskeletal system is what is needed to protect joints and reduce injuries. This attenuation and dissipation of force is not exclusive to particular joints in the anatomical system.
The attenuation and dissipation of force and bracing before impact by activating neck muscles can lower subconcussive trauma. This is a great reason for training the musculature that moves the neck and supports the head.