Neuromuscular DiseasesPresynaptic TerminalsRespiratory InsufficiencyReceptors, PresynapticMuscular DystrophiesMyotonic DystrophyHypoventilationMuscular Dystrophy, DuchenneRespiratory MusclesTracheostomyNADH Tetrazolium ReductaseMuscular Atrophy, SpinalNeuromuscular Junction DiseasesMuscular Dystrophy, FacioscapulohumeralTracheotomyRespiratory TherapyRespiration, ArtificialArthrogryposisInsufflationSynapsesSynaptic TransmissionIntermittent Positive-Pressure VentilationMyasthenia GravisMasksMuscle, SkeletalSpinal Muscular Atrophies of ChildhoodMuscular DiseasesHereditary Sensory and Motor NeuropathyPositive-Pressure RespirationMyographyVentilators, MechanicalOphthalmoplegiaMuscle WeaknessAmyotrophic Lateral SclerosisRespiration DisordersSMN Complex ProteinsExcitatory Postsynaptic PotentialsSurvival of Motor Neuron 1 ProteinGuillain-Barre SyndromeMotor NeuronsMusclesElectric ImpedanceMyositisSynaptic VesiclesCoughVentilator WeaningMuscle Fibers, SkeletalNeurotransmitter AgentsDystrophinCharcot-Marie-Tooth DiseaseNeural InhibitionSleep Apnea SyndromesMuscular AtrophyScoliosisMice, Inbred mdxMucusRespiratory Function TestsElectric StimulationVital Capacity