title: Mitochondrial myopathy presenting as exercise intolerance.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008659:Metabolic Diseases / Q000175:diagnosis*; D008931:Mitochondria, Muscle / Q000378:metabolism*; D009135:Muscular Diseases / Q000175:diagnosis*; D005082:Physical Exertion; D013577:Syndrome