The sessions will begin with breathing exercises in standing, sitting, supine and prone positions, and these exercises will be applied for about 10 minutes. After the breathing exercises, the sudden relaxation technique, which will take 2-3 minutes, firstly contracting the whole body from the feet to the head and then completely relaxing it.

Spinal stabilization exercises will be applied to the individuals in this group for 8 weeks / 2 days a week, approximately 50-60 minutes a day under the supervision of a physiotherapist.

Spinal stabilization exercises will be progressed in 3 phases by gradually increasing the difficulty.

Yoga

Pain intensity of participants will be evaluated with visual analog scale (VAS). Paricipants asked to mark the intensity of pain on a 10 cm long line, explaining that the leftmost of the line does not have pain, that the pain increases while moving to the right, and that the pain is unbearable on the far right. VAS scored between 0-10 cm.

Patient's pain related functional status will be measured by Oswestry Disability Index. The scale is considered the 'gold standard' of low back functional outcome tools. This scale contain questions related to functional activities of pain intensity, personal care, lifting, walking, sitting, standing, sleeping, sex life, social life and travelling. Interpretation of scale are 0% to 20% for minimal disability, 21% to 40% for moderate disability, 41 % to 60 % for severe disability 61% to 80 % for crippled and 81 % to 100 % Bed-bound. The Oswestry Disability Index is scored between 0-50 points. An increase in score indicates a poor result.

Patient's back-related functional performance will be evaluated with Back Performance Scale. Each question is scored between 0 and 3. The total score recorded. The Back Performance Scale test is scored between 0-15 points. An increase in score indicates a poor result.

Patient's back-related functional performance will be evaluated with Back Performance Scale. Each question is scored between 0 and 3. The total score recorded. The Back Performance Scale test is scored between 0-15 points. An increase in score indicates a poor result.

To evaluate the transversus abdominis muscle activation, the stabilizer biofeedback device is placed under the abdomen, just below the spina iliaca anterior superior, while the patient is in the prone position. The cuff of the device is inflated to 70 mmHg, the patient is asked to breathe and pull the abdomen up and in while exhaling, but the patient is warned not to make pelvis and spine movement. In the meantime, how much the pressure has changed is observed from the stabilizer device. In the test, the average of 3 repetitions will be recorded. With successful measurement, the pressure is expected to drop between 6 and 10 mm-Hg.