Results 211 to 220 of about 219,915 (268)

Muscle Fiber Types

Orthopedics, 1985
ABSTRACT; Muscle fiber can be typed according to histologic, biochemical, neurophysiology, and ultrastructural differences. The relationship between muscle fiber typing and clinical areas of investigation is summarized. Genetic factors are largely responsible for the distribution of main muscle fiber types.
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Intrafusal muscle fibers of duck muscle spindles

Journal of Morphology, 1987
AbstractSerial transverse paraffin sections of intrafusal muscle fibers of spindles from the extensor pollicis and the extensor digitorum communis of ducks show that only one type of intrafusal muscle fiber exists, based on the mid‐equatorial nucleation pattern, diameter, and length.
M N, Adal, S B, Chew Cheng
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Muscle-fiber compartmentalization in cat splenius muscles

Journal of Neurophysiology, 1985
Splenius is a structurally complex muscle that is supplied by nerves from four cervical segments. We have examined the architectural organization of extrafusal fibers in splenius by microdissecting muscles stained "en bloc" with gold chloride. We also analyzed the distribution of motor units supplied from different cervical segments using the glycogen-
F J, Richmond, D R, MacGillis, D A, Scott   +2 more
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Capacity of Muscle Fiber Membrane

American Journal of Physiology-Legacy Content, 1957
Using two or three microelectrodes inserted into single muscle fibers of the toad sartorius, the electric impedance of the muscle fiber membrane was measured with a.c. between 25 and 1500 cps. It was found that the capacity of the muscle fiber membrane is practically independent of the frequency of the measuring a.c.
I, TASAKI, S, HAGIWARA
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Myopathy with trabecular muscle fibers

Neuromuscular Disorders, 1999
A 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, S, Carpenter, H, Lochmüller, G, Karpati   +3 more
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Endocytosis in Skeletal Muscle Fibers

Experimental Cell Research, 1999
Defining the organization of endocytic pathway in multinucleated skeletal myofibers is crucial to understand the routing of membrane proteins, such as receptors and glucose transporters, through this system. Here we analyzed the organization of the endocytic trafficking pathways in isolated rat myofibers.
Kaisto, T., Rahkila, P., Marjomaki, V., Parton, R. G., Metsikko, K.   +4 more
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Muscle fiber types and function

Current Opinion in Rheumatology, 1993
In 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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Fiber Typing in Aging Muscle

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, Nicolas, Sgarioto, Russell T, Hepple   +2 more
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Muscle Strength and Fiber Typing

Clinics in Sports Medicine, 1984
The 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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Hereditary Continuous Muscle Fiber Activity

Archives of Neurology, 1984
We describe a family with classic features of continuous muscle fiber activity (Isaacs-Mertens syndrome) appearing in an autosomal dominant pattern. Both a mother and her son had muscle stiffness and rigidity in early childhood. Because the mother's condition was not immediately apparent, we recommend a thorough examination of family members.
S A, McGuire, J J, Tomasovic, N, Ackerman   +2 more
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