Maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) will be measured using portable, electronic, oral pressure measuring device (Micro Medical MicroMPM, UK).

Trunk impairment scale assesses static and dynamic sitting balance and trunk coordination. The maximum scores on the static sitting balance, dynamic sitting balance, and coordination subscales are 7, 10, and 6 points, respectively. The total score of Trunk impairment scale ranges between 0 and 23 points, with a higher score representing better trunk control.

Subjects were asked to lie on their left or right sides and extend their legs straight. Then the subjects lift their hips off the ground and form a straight line with their bodies. The measurements are recorded with a chronometer as seconds. The tests end when the subjects break the test positions.

During the test, the subjects are placed in an exercise bed that extends outwardly from the leading edge of the upper body and ensures that the upper iliac spine is flush with the bench edge. Subjects are asked to raise their arms while maintaining body positions.Measurements are recorded in seconds with a stopwatch. The tests will end when the subjects break the test positions.

Individuals are positioned in such a way that the body is at 60º, knees and hip at a flexion position of 90º. The evaluating physiotherapist supports the feet and fixes the feet on the floor. The measurements are recorded with a chronometer as seconds. The test is terminated when the 60 ° trunk flexion is impaired.

During the test, the subjects place their elbows on the floor as their starting position and open their feet around the width of their thighs. They keep their body straight without bending over their elbows and toes.The measurements are recorded with a chronometer as seconds. The tests end when the subjects break the test positions.

The test is initiated when the subjects are told "start" and they are asked to flex their upper body up from the floor lifting the lower corner of the scapula from the floor.It is recorded how many times the subjects can perform each test for 30 seconds.

In the push-ups test, the subjects are required to push their lower body until their elbows reach a 90° angle. They are then asked to extend their arms straight to return to the starting position.It is recorded how many times the subjects can perform each test for 30 seconds.

Lumbopelvic stability is assessed using a stabilizer Pressure Biofeedback UnitTM (Chattanooga, Australia). With the participant lying supine on a plinth, the cushion is inflated underneath the participant's lumbar spine to 40 mmHg. Prior to testing, all participants are instructed in the "abdominal hollowing" manoeuvre that activates Transversus Abdominis muscle, and told to perform and continue the contraction this during subsequent lumbopelvic stability testing while attempting to minimize contraction of rectus abdominis. Scores are recorded as the highest level completed (0-5) with a pressure change no greater than 10 mmHg.