Our research project aims at establishing a program of physical training that will fulfill the two following conditions: (i) being compatible with the daily professional, social and family activity of the patients so it can be integrated in their life habits and (ii) being intensive enough to induce functional benefits. This experimental work will be based on multi-factorial evaluations, i.e. biological, physiological, functional, and quality of life questionnaires. This work will be based on a collaboration between the Universities of Saint Etienne (L. Féasson), Grenoble (B Wuyam) and Örebro (F Kadi) within the Rhône-Alpes Reference Centre for Rare Neuromuscular Diseases (JC Antoine).