Results 221 to 230 of about 226,617 (267)
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The histochemical classification of muscle fibers
Experimental Neurology, 1970Abstract Histochemical studies have shown that red and white mammalian muscles are not homogeneous and that, regardless of the enzyme reaction employed, most white muscles possess three types of fibers and most red muscles possess one or two fiber types. Inasmuch as different nomenclatures for the three basic fiber types have been proposed (according
H, Yellin, L, Guth
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Myopathy with trabecular muscle fibers
Neuromuscular Disorders, 1999A systematic review of muscle biopsies over a 15 year period in a large neurological hospital revealed 21 cases (7% of the total of non-inflammatory myopathies) with a distinctive pattern of myopathology and a limb-girdle clinical phenotype. The muscle pathology was dominated by a large prevalence (20-90%) of trabecular or lobulated fibers in which ...
B, Weller +3 more
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Skeletal muscle fiber hyperplasia
Medicine & Science in Sports & Exercise, 1993Skeletal muscle enlargement in adult animals has been ascribed primarily to changes in fiber cross-sectional area (i.e., fiber hypertrophy); however, recent evidence from several laboratories suggests strongly that fiber hyperplasia contributes to muscle mass increases in adult animals and possibly human athletes.
Antonio, Jose, Gonyea, W. J.
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Muscle fiber excitation system
2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2016Persons unable to exercise due to old age, immobility or medical condition may develop low bone density, decline in muscle contraction, blood pooling or clot. Due to musculoskeletal fragility caution is required in bone and muscle strengthening. Similarly, caution is required to use anticoagulant drug to prevent blood clot due to side effect, and ...
Bertram N. Ezenwa, Thomas Kernozek
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Ultrastructure of muscle fibers of an extraocular muscle of the pigeon
Tissue and Cell, 1972Abstract An electron microscopic analysis of the internal rectus muscle of the eye of the pigeon permitted identification of three types of muscle fibers: the first type shows the features previously described in vertebrate twitch fibers. The second type has very scarce sarcoplasmic reticulum at the A-band, their myofibrils fuse together at this ...
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Muscle fiber types and function
Current Opinion in Rheumatology, 1993In this review, we address current concepts and recent experimental results that relate to heterogeneity in the physiologic, biochemical, and morphologic properties of mammalian skeletal muscle fibers. Recent data reinforce some of these current concepts while questioning others.
R J, Talmadge, R R, Roy, V R, Edgerton
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Exercise and Sport Sciences Reviews, 2014
It is accepted widely that fast-twitch muscle fibers are preferentially impacted in aging muscle, yet we hypothesize that this is not valid when aging muscle atrophy becomes severe. In this review, we summarize the evidence of fiber type-specific effect in aging muscle and the potential confounding roles of fibers coexpressing multiple myosin heavy ...
Fennigje M, Purves-Smith +2 more
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It is accepted widely that fast-twitch muscle fibers are preferentially impacted in aging muscle, yet we hypothesize that this is not valid when aging muscle atrophy becomes severe. In this review, we summarize the evidence of fiber type-specific effect in aging muscle and the potential confounding roles of fibers coexpressing multiple myosin heavy ...
Fennigje M, Purves-Smith +2 more
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Muscle Strength and Fiber Typing
Clinics in Sports Medicine, 1984The authors discuss fiber typing and morphologic changes resulting from training and how these affect athletic performance. Also considered is the concept of strength, its measurement and development, and how strength affects athletic performance, activity, and injury.
M, Marino, G W, Gleim
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The muscle fatigue fiber model
Mathematics and Computers in Simulation, 2010The aim of this study was to integrate the effect of muscle fatigue into the skeletal muscle fiber model, which was previously developed in our laboratory and was based on the modified Huxley equation with the calcium activation taken into account. The cellular mechanisms such as (i) the attachment of myosin heads to the actin binding sites, (ii) the ...
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Growth of crustacean muscles and muscle fibers
Journal of Comparative Physiology ? A, 1978The superficial flexor (SF) muscle of the crayfish (Procambarus clarkii) abdomen increases in volume in direct proportion to increases in total body weight during ontogeny. This increase in SF muscle mass occurs solely (Figs. 1, 2) by an increase in the width and length of SF muscle fibers (i.e., the number of SF muscle fibers remains constant). Unlike
George D. Bittner, David L. Traut
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