Suboccipital Myofascial Release Technique will be applied to this group first. After the intervention in this group is completed, the transition to the other crossover group will be made.

Once the intervention to the first group is completed, the second intervention "Suboccipital Myofascial Release Technique" will be applied to this group.

With the patient in a supine position, the therapist sits behind the patient with his or her forearms on the treatment table. The therapist places his fingers between the occiput and axis, with his fingers in semi-flexion (2nd, 3rd and 4th fingers), and continues to hold his hands on the occiput until relaxation is achieved in the suboccipital muscles. A light traction is applied at the end of the technique. Average application time is 4-5 minutes.

The Cervical Joint Position Error Test is a measurement tool used to clinically assess an individual's cervicocephalic proprioception ability. Cervicocephalic proprioception describes one's sense of position of their head and neck in space.

Cervical joint movement, cervical flexion, extension, right and left rotation, right-left lateral flexion movement will be measured with the help of a suitable goniometer.

Portable computerized kinesthetic balance device (SportKAT) examines balance in 2 main parameters: static and dynamic, and 4 main parameters: forward-backward, right-left. SporKAT consists of a platform on the ground and a screen designed to be directly in front of the patient, 1 meter away from the patient. After the pressure values of the platform are adjusted, the content of the test is explained to the patient and the patient is placed on the platform with bare feet, and then the patient's feet are adjusted to the specified places on the platform. During the test, the patient is asked to try to keep the x (cross) sign on the screen in the middle of the circle visible on the screen for 30 seconds. The test is terminated after 30 seconds. Higher balance scores indicate that the person's balance is more impaired.