Final answer:
If the head juts forward during a pulling assessment, it indicates underactivity of the muscles at the back of the neck, specifically the deep neck flexors. Strengthening these muscles can improve posture.
Step-by-step explanation:
During a pulling assessment, if the head juts forward, it indicates that the muscles at the back of the neck are underactive or weak. These muscles, known as the deep neck flexors, are responsible for keeping the head erect.
When they are underactive, other muscles in the front of the neck, such as the sternocleidomastoid and the scalenes, become overactive and pull the head forward. This can lead to poor posture and potential neck pain or discomfort.
To address this issue, exercises that target the deep neck flexors can be implemented to strengthen them and improve posture.