Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/15852
Title: The effectiveness of two novel techniques in establishing the mechanical and contractile responses of biceps femoris
Contributor(s): Ditroilo, Massimiliano (author); Hunter, Angus M (author); Haslam, Samuel (author); de Vito, Giuseppe  (author)
Publication Date: 2011
DOI: 10.1088/0967-3334/32/8/020
Handle Link: https://hdl.handle.net/1959.11/15852
Abstract: Portable tensiomyography (TMG) and myotonometry (MMT) devices have been developed to measure mechanical and contractile properties of skeletal muscle. The aim of this study was to explore the sensitivity of the aforementioned techniques in detecting a change in passive mechanical properties of the biceps femoris (BF) muscle as a result of change in knee joint angle (i.e. muscle length). BF responses were assessed in 16 young participants (23.4 ± 4.9 years), at three knee joint angles (0°, 45° and 90°), for maximal isometric torque (MIT) along with myo-electrical activity. Contractile and mechanical properties were measured in a relaxed state. Inter-day reliability of the TMG and MMT was also assessed. MIT changed significantly (p < 0.01) across the three angles, so did stiffness and other parameters measured with MMT (p < 0.01). Conversely, TMG could detect changes only at two knee angles (0° and 45°, p < 0.01), when there is enough tension in the muscle. Reliability was overall insufficient for TMG whilst absolute reliability was excellent (coefficient of variation < 5%) for MMT. The ability of MMT more than TMG to detect an inherent change in stiffness can be conceivably exploited in a number of clinical/therapeutic applications that have to do with unnatural changes in passive muscle stiffness.
Publication Type: Journal Article
Source of Publication: Physiological Measurement, 32(8), p. 1315-1326
Publisher: Institute of Physics Publishing Ltd
Place of Publication: United Kingdom
ISSN: 1361-6579
0967-3334
Fields of Research (FoR) 2008: 110604 Sports Medicine
110602 Exercise Physiology
Socio-Economic Objective (SEO) 2008: 970106 Expanding Knowledge in the Biological Sciences
970111 Expanding Knowledge in the Medical and Health Sciences
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

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