Age and Sex Effects on the Active Stiffness of Vastus Intermedius under Isometric Contraction

• Published in: BioMed research international Vol. 2017; no. 2017; pp. 1 - 16
• Main Authors: Shi, Wenxiu, Zhou, Yongjin, Li, Tian-Jie, Guo, Jing-Yi, Wang, Cong-Zhi, Zheng, Yong-Ping
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2017; Hindawi; John Wiley & Sons, Inc
• Subjects: Adult; Age; Age Factors; Aged; Aging; Biomedical engineering; Electromyography; Female; Gender differences; Humans; Isometric Contraction - physiology; Knee; Knee Joint - physiology; Male; Mechanical properties; Middle Aged; Morphology; Muscle contraction; Muscle, Skeletal - physiology; Musculoskeletal system; Physiological aspects; Quadriceps Muscle - physiology; R&D; Range of Motion, Articular - physiology; Research & development; Sex Characteristics; Studies; Young Adult; China; Hong Kong, China

Previously, a novel technique was proposed to quantify the relationship between the muscle stiffness and its nonfatigue contraction intensity. The method extended the measured range of isometric contraction to 100% maximum voluntary contraction (MVC) using an ultrasonic shear wave measurement setup....