Comparison of isometric and load moving length-tension models of two bicompartmental muscles

The length-tension relations of two bicompartmental muscles, including parallel and pennated fibers, were experimentally determined for isometric and load moving contractions. Comparison of the isometric and constant mass load length-tension curves obtained from the same preparations demonstrated si...

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Bibliographic Details
Published inIEEE transactions on biomedical engineering Vol. 41; no. 8; pp. 771 - 781
Main Authors Vance, T.L., Solomonow, M., Baratta, R., Zembo, M., D'Ambrosia, R.D.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.08.1994
Institute of Electrical and Electronics Engineers
Subjects
Animals
Biological and medical sciences
Biomechanical Phenomena
Biomedical engineering
Biomedical transducers
Cats
Creep
Differential equations
Electrical stimulation
Fundamental and applied biological sciences. Psychology
Isometric Contraction - physiology
Load modeling
Mathematical model
Models, Biological
Muscle Contraction - physiology
Muscle, Skeletal - physiology
Muscles
Physical Exertion - physiology
Space life sciences
Spinal cord injury
Tendons
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
Fissipedia
Carnivora
Force
Isometric muscular contraction
Length tension relation
Experimental study
Striated muscle
Muscle contraction
Osteoarticular system
Vertebrata
Compartmental model
Mammalia
Isotonic muscular contraction
Animal
Cat
Mathematical model
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Summary:The length-tension relations of two bicompartmental muscles, including parallel and pennated fibers, were experimentally determined for isometric and load moving contractions. Comparison of the isometric and constant mass load length-tension curves obtained from the same preparations demonstrated significant reductions in force, a shift of the optimal length and increased elongation range for shortening contractions under constant mass load. Pennated muscle demonstrated a larger reduction in force and greater shift in the optimal length relative to the changes in a muscle with parallel fibers. A bicompartmental model was fitted to the experimental data to provide quantitative insight to the changes described above, and for use in mathematical models of other bicompartmental muscles, and for design of optimal electrical stimulation system for restoration of function in spinal cord injury patients.< >
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ISSN:0018-9294
1558-2531
DOI:10.1109/10.310092