If you ask a client to turn his head to the side so you can see how much range of motion he has, this is considered what type of movement?

When a client turns his head to the side on his own, this movement is classified as active movement. Active movement refers to when the individual is using their own muscles to perform the action. In this case, the client is voluntarily engaging the muscles in the neck and shoulder region to initiate and control the motion of turning the head.

This is distinct from passive movements, where an examiner or another person would move the client's body part without their muscle engagement, or from active resisted movements, where resistance is applied to the movement, impacting the effort of the client’s muscles. Since the client is executing the action without external assistance or resistance, it confirms that this is an active range of motion assessment.