title: Voluntarily induced differential alteration in force threshold of single motor units of the human vastus lateralis.
mesh_terms: D000328:Adult; D004576:Electromyography / Q000379:methods*; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D009046:Motor Neurons / Q000502:physiology*; D009119:Muscle Contraction; D009132:Muscles / Q000294:innervation*; D011999:Recruitment, Neurophysiological