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Dynamometer for rat plantar flexor muscles in vivo.

Authors
Cutlip-RG; Stauber-WT; Willison-RH; McIntosh-TA; Means-KH
Source
Med Biol Eng Comput 1997 Sep; 35(5):540-543
NIOSHTIC No.
20024483
Abstract
A dynamometer is designed and fabricated to measure the force output during static and dynamic muscle actions of the plantar flexor muscles of anaesthetised rats in vivo. The design is based on a computer-controlled DC servomotor capable of angular velocities in excess of 17.5 rad s-1. The system controls the range of motion, angular velocity and electrical stimulation of the muscles, while monitoring the force output at the plantar surface of the foot. The force output is measured by a piezo-electric load cell that is rated at 5 kg capacity. Angular velocity and position are measured by a DC tachometer and potentiometer, respectively. All measurement devices are linear (r2 = 0.9998). The design minimises inertial loading during high-speed angular motions, with a variation in force output of less than 0.2%. The dynamometer proves to be an accurate and reliable system for quantifying static and dynamic forces of rat plantar flexor muscles in vivo.
Keywords
In-vivo-studies; Muscle-stress; Muscle-tension; Musculoskeletal-system-disorders; Skeletal-stress; Skeletal-system-disorders; Skeletal-disorders; Laboratory-animals; Animal-studies; Animals; Simulation-methods
Contact
Department of Neurology, West Virginia University, PO Box 9229, Morgantown, WV 26506, USA
CODEN
MBECDY
Publication Date
19970901
Document Type
Journal Article
Email Address
wstauber@wvu.edu
Funding Amount
141085
Funding Type
Grant
Fiscal Year
1997
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-002918
Issue of Publication
5
ISSN
0140-0118
Priority Area
Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
Source Name
Medical and Biological Engineering and Computing
State
WV
Performing Organization
West Virginia University, Morgantown, West Virginia
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