The DMD-GAS was developed using the two-round Delphi method. After a detailed literature review, the items of scale were compiled. The DMD-GAS was designed to consist of 10 items and each item scored as 0,1,2. The DMD-GAS was presented to the expert group (10 physical therapists), who had experience in the management of patients with DMD. According to the scale items, it is classified as 2: no compensation, 1: minimal compensation, and 0: excessive compensation for the relevant body part.

a special gait assessment scale for Duchenne Muscular Dystrophy patients

The scale which developed specifically for DMD with this study. The DMD-GAS was designed to consist of 10 items and each item scored as 0 (excessive compensation in the relevant body part), 1 (minimal compensation) or 2 (no compensation). Low score indicate compensated gait.

MFM, which was valid and reliable in Neuromuscular Diseases, was used for gross motor function assessment. The items in MFM, which evaluate functions in 3 different sections (D1, standing position and transfers; D2, axial and proximal motor function; D3, distal motor function) in 32 items in total, are scored between 0-3. 0; cannot initiate any movement and maintain the starting position, 1; partially completes the exercise, 2; performs the exercise slowly and visibly clumsily, with compensations, 3; performs the exercise in the specified standard pattern. High scores indicate higher motor function and the result is expressed as a percentage of the maximum possible score to enable comparison with other scores

6MWT is an assessment that was developed by Balke in the 1960s and has validity and reliability for DMD patients. The maximum distance that the patient can walk in 6 minutes is recorded as meters.