title: Discharge patterns of motor units during increasingly strong contraction of the rectus femoris muscle depending on level of training and athletic specialization.
mesh_terms: D000200:Action Potentials; D004576:Electromyography; D006801:Humans; D009046:Motor Neurons / Q000502:physiology*; D009119:Muscle Contraction; D009132:Muscles / Q000294:innervation*; D010806:Physical Education and Training; D012420:Running; D013178:Sports Medicine; D014142:Track and Field