
Proceedings Paper
In-vivo muscle length-force-joint angle relationship for quasi-static muscle action of the biceps muscleFormat | Member Price | Non-Member Price |
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Paper Abstract
Experimental findings of non invasive in-vivo monitoring are essential to study the diversity and evolution of
musculoskeletal kinematics. In this paper, results obtained from the uni-axial monitoring of the quasi-static
dynamics of the biceps muscle-belly are reported. Monitoring of the belly diameter is based on a custom
developed ultrasonic caliper combined with the synchronously recorded applied external force and joint angle
variations detected with a custom build ultrasonic force sensor and a resistive angle decoder respectively. The
monitored muscle action includes the processes of active muscle contraction and relaxation in a closed path
starting with an initial isotonic contraction followed by eccentric (spring like) stretching. The technology
applied here allows for observations of those processes and registration of their paths in the length-forceangle
parameter space. That way of presentation reveals that at some conditions the closed-loop human cycles
follow in close approximation characteristic lines of well identifiable elementary processes. The presentation
of these processes in the length-force parameters space allows for discussion of the mechanical energy
expenditure during different muscle actions. Comparative studies of identical closed-loop muscle actions and
the joint angle-force-length relationships of the muscle-tendon complex are presented. This synchronous
monitoring also allows quantifying the joint torques and positions with high accuracy for living person.
Paper Details
Date Published: 17 April 2013
PDF: 9 pages
Proc. SPIE 8695, Health Monitoring of Structural and Biological Systems 2013, 86952E (17 April 2013); doi: 10.1117/12.2009990
Published in SPIE Proceedings Vol. 8695:
Health Monitoring of Structural and Biological Systems 2013
Tribikram Kundu, Editor(s)
PDF: 9 pages
Proc. SPIE 8695, Health Monitoring of Structural and Biological Systems 2013, 86952E (17 April 2013); doi: 10.1117/12.2009990
Show Author Affiliations
Published in SPIE Proceedings Vol. 8695:
Health Monitoring of Structural and Biological Systems 2013
Tribikram Kundu, Editor(s)
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