MiRNA biomarkers for diagnosing muscular dystrophy and its progression

A method for diagnosing a muscular disorder in which degeneration of fibrasmusculares occurs in a subject, comprising determining in vitro whether: - at least one molecule belonging to the following group: miR-206 and miR-1 or - miR-133 molecule has increased in a blood or serum of the subject as compared with a healthy individual muestraobtenida levels.