Age-associated changes in muscle activity during isometric contraction

• Published in: Muscle & nerve Vol. 47; no. 4; pp. 545 - 549
• Main Authors: Arjunan, Sridhar P., Kumar, Dinesh K.
• Format: Journal Article
• Language: English
• Published: United States Blackwell Publishing Ltd 01.04.2013; Wiley Subscription Services, Inc
• Subjects: Adult; Age; Age Factors; Aged; Aging; Aging - physiology; Arm - physiology; complexity; Electromyography; Female; Humans; Isometric Contraction - physiology; Male; Middle Aged; muscle activity; Muscle Strength - physiology; Muscle, Skeletal - physiology; Muscular system; strength; Studies; voluntary contraction

Introduction: We investigated the effect of age on the complexity of muscle activity and the variance in the force of isometric contraction. Methods: Surface electromyography (sEMG) from biceps brachii muscle and force of contraction were recorded from 96 subjects (20–70 years of age) during isometr...