The patients who were the rigid brace and performed the SSE therapy in the specified constituted the Brace & Exercise. Experimental group patients wore full-time rigid brace and Schroth exercises for 60 minutes 5 days a week by the physician.

The patients who wore full-time rigid braces but did not perform exercise constituted the Brace group. Comparator group patients wore full-time brace only, did not perform Schroth exercises.

Schroth exercises, which are a specific exercise method for scoliosis, were given to the experimental group for 8 weeks, different from the control group.

Forced vital capacity (FVC), is the maximum amount of air that can be exhaled when blowing out as fast as possible. The pulmonary function test was evaluated with two different measurements, both at the beginning of the treatment (T0) and at the 8th week of the treatment (T1). The data obtained was determined as the primary outcome of the study, and the patients in both groups were administered by the research physiotherapist. For respiratory function tests were used a handheld type spirometer (SP10W, Contec). For the spirometric measurement, the patient was seated on the chair and a clip was placed on the patient nose to keep the nostril closed. Afterward, the device was placed in the patient's mouth, they were asked to take a deep breath and exhale into the device with maximum force. This process was repeated three times and the highest value among the measurements was recorded as respiratory function data.

Forced expiratory volume in 1 second (FEV1) is the volume of air exhaled in the first second during forced exhalation after maximum inspiration. The pulmonary function test was evaluated with two different measurements, both at the beginning of the treatment (T0) and at the 8th (T1) week of the treatment. The obtained data were determined as the primary outcome of the study and the patients in both groups were administered the same procedure by the researcher physiotherapist.

Peak expiratory flow (PEF), the maximal flow that can be exhaled when blowing out at a steady rate. The pulmonary function test was evaluated with two different measurements, both at the beginning of the treatment (T0) and at the 8th (T1) week of the treatment. The obtained data were determined as the primary outcome of the study and the patients in both groups were administered the same procedure by the researcher physiotherapist.