Respiratory exercises will be applied in addition to conventional treatment for frozen shoulder patients.

For frozen shoulder patients, 15 conventional treatment programs will be applied.

During the exercise sessions, participants will be seated in a chair. In the first five and last five minutes of the session, they will be instructed to focus on their breathing and the sensations produced in the body while sitting comfortably in a relaxed position with all joints in the chairs with their eyes closed. After the initial 5 minutes of relaxed breathing, participants will be instructed to perform diaphragmatic and costal breathing for 10 minutes. After 5 minutes of diaphragmatic breathing, the patient will be rested for 1 minute and then 5 minutes of costal breathing will be performed. While doing coastal breathing, patients will be asked to place their hands on their costas, take a deep breath and inflate the bottom of their hands; then they will be asked to exhale the breath they take in a longer (1:2) time.

In this study, the severity of shoulder pain will be evaluated with the Visual Analogue Scale. According to the VAS, pain intensity is graded as "no pain" 0 points and "worst unbearable pain" 10 points (10 cm scale).

The Short Form-36, frequently used to assess quality of life, will be used. SF-36 consists of eight subscales including physical function, physical role, emotional function, social function, general health, mental health, pain and wellness. Each subscale scores between 0-100, and the scale is directly proportional to quality of life. A score of 100 indicates the best health status and a score of 0 indicates the worst health status.

In the study, a digital goniometer, which has been validated and reliable, was used to objectively evaluate the normal range of motion of the shoulder. Normal range of motion of the shoulder will be evaluated by measuring the range of motion of shoulder flexion, extension, abduction, internal rotation and external rotation movements.