title: [Effect of isometric contraction of upper extremity muscles (handgrip) on the electrocardiographic findings in patients with chronic myocardial ischemia (stenocardia)].
mesh_terms: D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis / Q000503:physiopathology*; D002908:Chronic Disease; D004562:Electrocardiography; D005260:Female; D006225:Hand; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000503:physiopathology*
vernacular_title: Wpływ skurczu izometrycznego mieśni kończyny górnej (handgrip) na obraz elektrokardiograficzny chorych z prezewlekła choroba niedokrwienna serca (stenokardia)