title: Excitation frequency and muscle fatigue: mechanical responses during voluntary and stimulated contractions.
mesh_terms: D000328:Adult; D000818:Animals; D004558:Electric Stimulation; D006614:Hindlimb / Q000294:innervation; D006801:Humans; D051379:Mice; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology; D009119:Muscle Contraction / Q000187:drug effects; D009132:Muscles / Q000294:innervation / Q000502:physiology*; D009469:Neuromuscular Junction / Q000502:physiology; D012032:Refractory Period, Electrophysiological / Q000187:drug effects; D012964:Sodium / Q000494:pharmacology; D014459:Ulnar Nerve / Q000502:physiology
chemical_list: D012964:Sodium