Final answer:
Upper crossed syndrome is characterized by a muscle imbalance in the neck, chest, shoulders, and upper back. It can cause rounded shoulders, forward head posture, and a hunched back. Symptoms may include neck pain, headaches, shoulder pain, and restricted range of motion.
Step-by-step explanation:
Upper crossed syndrome is characterized by a muscle imbalance in the neck, chest, shoulders, and upper back. This condition is commonly seen in individuals who sit for long periods, such as office workers or students who spend a lot of time studying or using electronic devices.
In upper crossed syndrome, the muscles that become tight and overactive are the upper trapezius, levator scapulae, pectoralis major, and sternocleidomastoid.
On the other hand, the muscles that become weak and underactive are the lower trapezius, rhomboids, serratus anterior, and deep neck flexors.
This imbalance can lead to rounded shoulders, forward head posture, and a hunched back. It can cause various symptoms, including neck pain, headaches, shoulder pain, and restricted range of motion in the neck and shoulders.