Muscle Fiber Types, Characteristics and Meat Quality

2013 ◽  
Vol 634-638 ◽  
pp. 1263-1267
Author(s):  
Lin Su ◽  
Hui Li ◽  
Xue Xin ◽  
Yan Duan ◽  
Xiao Qing Hua ◽  
...  
Keyword(s):  
Meat Quality ◽  
Muscle Fiber ◽  
Fiber Type ◽  
Influence Factors ◽  
Muscle Fiber Type ◽  
Basic Unit ◽  
Muscle Fiber Types ◽  
Fiber Types ◽  
Type Conversion ◽  
Fiber Type Distribution

Muscle fiber is the basic unit of muscle tissue, this paper summarized the types of muscle fiber of animals, the influence factors of muscle fiber type distribution and the muscle fiber type conversion in the process of growth constantly. Discuss the important effect of muscle fiber type on meat quality.

Are muscle fiber types different between normal and dark-cutting beef?

2022 ◽  
Author(s):  
Bimol Roy ◽  
Shahid Mahmood ◽  
H. L. Bruce
Keyword(s):  
Muscle Fiber ◽  
Fiber Type ◽  
Cooking Loss ◽  
Muscle Fiber Type ◽  
Muscle Fiber Types ◽  
Type I ◽  
Fiber Types ◽  
Muscle Proteins ◽  
Beef Quality

Muscle fiber (MF) characteristics of Longissimus thoracis (LT) muscles from heifer (n = 11) and steer (n = 12) carcasses graded Canada AA (AA, normal, n = 4/sex) or dark-cutting (Canada B4) were examined and related to beef quality. Atypical (AB4, pH < 5.9, n = 4/sex) and typical (TB4, pH > 5.9, n = 3 and 4 for heifers and steers, respectively) dark-cutting carcasses were represented. Muscle fiber type proportions did not differ between AA, AB4 and TB4 muscles, although type I and IIB muscle fiber diameters were greater in TB4 than in AA LT. That AB4 muscle fiber proportions were not different from AA and TB4 muscles suggests that the increased MF diameter of TB4 muscle was due to water retained by muscle proteins at high ultimate pH, as evidenced by decreased cooking loss. Dark-cutting was therefore unrelated to muscle fiber proportions, and increased Type I and IIB diameters in dark cutting LT were likely driven by elevated intramuscular ultimate pH.

Histochemical Characteristics of Muscle Fiber Types in the Posterior Cricoarytenoid Muscle

1981 ◽  
Vol 90 (5) ◽  
pp. 423-429 ◽  
Author(s):  
Leslie T. Malmgren ◽  
Richard R. Gacek
Keyword(s):  
Muscle Fiber ◽  
Fiber Type ◽  
Succinic Dehydrogenase ◽  
Muscle Fiber Type ◽  
Muscle Fiber Types ◽  
Fiber Types ◽  
Partial Denervation ◽  
Posterior Cricoarytenoid Muscle ◽  
Posterior Cricoarytenoid

The muscle fiber type composition of the human posterior cricoarytenoid muscle (PCA) was examined using a large battery of histochemical techniques. Staining for myosin ATPase (pH 9.9) indicated that the muscles were composed of 52% ± 11.8 SD type 1 (slowly contracting) fibers and 48% ± 11.9 SD type 2 (rapidly contracting) fibers. In order to obtain information concerning the probable fatigue resistance of the type 2 fibers, serial sections were processed to determine the relative extent of ATPase inactivation at various pH levels in the acid range and to obtain data concerning the relative activities of oxidative and glycolytic enzymes and their substrates. The great majority of the type 2 fibers were of the 2A (fatigue resistant) fiber type. This indication of a capacity for prolonged activity was substantiated by the presence of high activities of succinic dehydrogenase, a mitochondrial enzyme which is involved in oxidative metabolism. Type 2C fibers (generally considered to be an undifferentiated fiber type) were also present but relatively rare. The overall enzyme profiles of many of the muscle fibers in the human PCA differed from those typical of fibers having the same alkaline ATPase and acid ATPase characteristics in most other mammalian muscles. Since muscle fiber biochemistry reflects the activity pattern of the motor unit, these unusual enzyme profiles may be the result of activity patterns that are associated with the inspiratory cycle and/or patterns of activity that are relatively specific to the PCA. Four of the ten muscles examined had unequivocal evidence of muscle fiber type grouping, a manifestation of partial denervation followed by reinnervation. This is interesting since most of the cases were in the fifth decade. Muscle fiber type grouping has been shown to occur selectively in certain other human muscles and to increase with age, eventually resulting in muscle atrophy. This suggests the possibility that the human PCA is for some reason selectively vulnerable to partial denervation and indicates the need for more extensive data concerning the relationship of muscle fiber type grouping in the PCA and other laryngeal muscles to age.

Blood flow to different skeletal muscle fiber types during contraction

1983 ◽  
Vol 245 (2) ◽  
pp. H265-H275 ◽  
Author(s):  
B. G. Mackie ◽  
R. L. Terjung
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Muscle Fiber ◽  
Fiber Type ◽  
Oxidative Capacity ◽  
Skeletal Muscle Fiber ◽  
Muscle Fiber Types ◽  
Fiber Types ◽  
Blood Flows ◽  
Fast Twitch

Blood flow to fast-twitch red (FTR), fast-twitch white (FTW), and slow-twitch red (STR) muscle fiber sections of the gastrocnemius-plantaris-soleus muscle group was determined using 15 +/- 3-microns microspheres during in situ stimulation in pentobarbital-anesthetized rats. Steady-state blood flows were assessed during the 10th min of contraction using twitch (0.1, 0.5, 1, 3, and 5 Hz) and tetanic (7.5, 15, 30, 60, and 120/min) stimulation conditions. In addition, an earlier blood flow determination was begun at 3 min (twitch series) or at 30 s (tetanic series) of stimulation. Blood flow was highest in the FTR (220-240 ml X min-1 X 100 g-1), intermediate in the STR (140), and lowest in the FTW (70-80) section during tetanic contraction conditions estimated to coincide with the peak aerobic function of each fiber type. These blood flows are fairly proportional to the differences in oxidative capacity among fiber types. Further, their absolute values are similar to those predicted from the relationship between blood flow and oxidative capacity found by others for dog and cat muscles. During low-frequency contraction conditions, initial blood flow to the FTR and STR sections were excessively high and not dependent on contraction frequency. However, blood flows subsequently decreased to values in keeping with the relative energy demands. In contrast, FTW muscle did not exhibit this time-dependent relative hyperemia. Thus, besides the obvious quantitative differences between skeletal muscle fiber types, there are qualitative differences in blood flow response during contractions. Our findings establish that, based on fiber type composition, a heterogeneity in blood flow distribution can occur within a whole muscle during contraction.

scholarly journals Influence of Maternal Corn Supplementation of Beef Cattle on Muscle Fiber Type and Meat Quality of their Offspring

2019 ◽  
Vol 3 (2) ◽  
pp. 158-159
Author(s):  
D. Maharjan ◽  
A. Rodas-González ◽  
A. R. Tanner ◽  
V. C. Kennedy ◽  
J. D. Kirsch ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Meat Quality ◽  
Muscle Fiber ◽  
Fiber Type ◽  
Muscle Fiber Type

scholarly journals Early changes in muscle atrophy and muscle fiber type conversion after spinal cord transection and peripheral nerve transection in rats

2013 ◽  
Vol 10 (1) ◽  
pp. 46 ◽  
Author(s):  
Kosaku Higashino ◽  
Tetsuya Matsuura ◽  
Katsuyoshi Suganuma ◽  
Kiminori Yukata ◽  
Toshihiko Nishisho ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Peripheral Nerve ◽  
Muscle Atrophy ◽  
Muscle Fiber ◽  
Fiber Type ◽  
Spinal Cord Transection ◽  
Muscle Fiber Type ◽  
Nerve Transection ◽  
Type Conversion

Human Skeletal Muscle Fiber Types: Delineation, Development, and Distribution

1997 ◽  
Vol 22 (4) ◽  
pp. 307-327 ◽  
Author(s):  
Robert S. Staron
Keyword(s):  
Skeletal Muscle ◽  
Muscle Fiber ◽  
Human Skeletal Muscle ◽  
Fiber Type ◽  
Skeletal Muscle Fiber ◽  
Muscle Fiber Types ◽  
Fiber Types ◽  
Key Words Aging ◽  
Fiber Number ◽  
Human Limb

This brief review attempts to summarize a number of studies on the delineation, development, and distribution of human skeletal muscle fiber types. A total of seven fiber types can be identified in human limb and trunk musculature based on the pH stability/ability of myofibrillar adenosine triphosphatase (mATPase). For most human muscles, mATPase-based fiber types correlate with the myosin heavy chain (MHC) content. Thus, each histochemically identified fiber has a specific MHC profile. Although this categorization is useful, it must be realized that muscle fibers are highly adaptable and that innumerable fiber type transients exist. Also, some muscles contain specific MHC isoforms and/or combinations that do not permit routine mATPase-based fiber typing. Although the major populations of fast and slow are, for the most part, established shortly after birth, subtle alterations take place throughout life. These changes appear to relate to alterations in activity and/or hormonal levels, and perhaps later in life, total fiber number. Because large variations in fiber type distribution can be found within a muscle and between individuals, interpretation of data gathered from human muscle is often difficult. Key words: aging, myosin heavy chains, myogenesis, myofibrillar adenosine triphosphate

scholarly journals Vestigial-like 2 contributes to normal muscle fiber type distribution in mice

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Masahiko Honda ◽  
Kyoko Hidaka ◽  
So-ichiro Fukada ◽  
Ryo Sugawa ◽  
Manabu Shirai ◽  
...  
Keyword(s):  
Muscle Fiber ◽  
Fiber Type ◽  
Muscle Fiber Type ◽  
Normal Muscle ◽  
Type Distribution ◽  
Fiber Type Distribution

Carnitine metabolism in human muscle fiber types during submaximal dynamic exercise

1996 ◽  
Vol 80 (3) ◽  
pp. 1061-1064 ◽  
Author(s):  
D. Constantin-Teodosiu ◽  
S. Howell ◽  
P. L. Greenhaff
Keyword(s):  
Muscle Fiber ◽  
Fiber Type ◽  
Vastus Lateralis ◽  
Group Formation ◽  
Free Carnitine ◽  
Muscle Fiber Types ◽  
Type I ◽  
Fiber Types ◽  
Carnitine Metabolism ◽  
Type I Fibers

The effect of prolonged exhaustive exercise on free carnitine and acetylcarnitine concentrations in mixed-fiber skeletal muscle and in type I and II muscle fibers was investigated in humans. Needle biopsy samples were obtained from the vastus lateralis of six subjects immediately after exhaustive one-legged cycling at approximately 75% of maximal O2 uptake from both the exercised and nonexercised (control) legs. In the resting (control) leg, there was no difference in the free carnitine concentration between type I and II fibers (20.36 +/- 1.25 and 20.51 +/- 1.16 mmol/kg dry muscle, respectively) despite the greater potential for fat oxidation in type I fibers. However, the acetylcarnitine concentration was slightly greater in type I fibers (P < 0.01). During exercise, acetylcarnitine accumulation occurred in both muscle fiber types, but accumulation was greatest in type I fibers (P < 0.005). Correspondingly, the concentration of free carnitine was significantly lower in type I fibers at the end of exercise (P < 0.001). The sum of free carnitine and acetylcarnitine concentrations in type I and II fibers at rest was similar and was unchanged by exercise. In conclusion, the findings of the present study support the suggestion that carnitine buffers excess acetyl group formation during exercise and that this occurs in both type I and II fibers. However, the greater accumulation of acetylcarnitine in type I fibers during prolonged exercise probably reflects the greater mitochondrial content of this fiber type.

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