Choi, H Muscle forces and spinal loads at C4/5 level during isometric voluntary efforts. [electronic resource] - Medicine and science in sports and exercise Apr 2000 - 830-8 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0195-9131 Standard No.: 10.1097/00005768-200004000-00016 doi Subjects--Topical Terms: AdultCervical Vertebrae--physiologyElectromyographyHumansIsometric Contraction--physiologyMaleNeck Muscles--physiologyWeight-Bearing