title: STUDY OF VOLUNTARY MUSCULAR CONTRACTIONS IN PARKINSONISM.
mesh_terms: D001132:Arm; D004576:Electromyography; D006801:Humans; D009119:Muscle Contraction; D020734:Parkinsonian Disorders; D005082:Physical Exertion; D013746:Tetany; D014202:Tremor
keywords: ARM; ELECTROMYOGRAPHY; EXERTION; MUSCLE CONTRACTION; PARKINSONISM; TETANY; TREMOR