Tension regulation during lengthening and shortening actions of the human soleus muscle

Introduction. The use of classical methods for diagnosing muscle fatigue of physical workers, including dynamometry and electromyography, is often limited due to the complexity of the process, the inability to use them in production, and the subjectivity of the methodology. At the same time, such a method as myotonometry does not have these disadvantages, but the main area of its use at the moment is clinical practice. The aim of study was to determine the possibility of using myotonometry to assess muscle fatigue. Materials and methods. In the course of the study, the biomechanical characteristics of muscles that differ in their depth were evaluated using the "MyotonPro" device (Myoton AS, Estonia). We determined the tone and stiffness of the biceps of the shoulder, the soleus muscle, and the muscle that straightens the back at different periods of time under the influence of maximum load on them. Results. It was found that the studied parameters of these muscles immediately after performing a series of exercises "to failure" statistically significantly increased, and after 30 minutes - again decreased, but did not reach the initial level. Conclusions. The myotonometric study showed objectivity, reliability, repeatability and proved to be one of the most promising modern methods for assessing muscle fatigue, including for solving problems in the field of occupational health.

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The effect of high intensity interval training on SIRT1 and PGC1-α gene expression in soleus muscle of type 2 diabetes in male rat

Medical Journal of Tabriz University of Medical Sciences and Health Services ◽

10.34172/mj.2020.067 ◽

2020 ◽

Vol 42 (4) ◽

pp. 447-455

Author(s):

mahsa mohsenzadeh ◽

fariba aghaei ◽

farah nameni

Keyword(s):

Gene Expression ◽

Type 2 Diabetes ◽

Soleus Muscle ◽

High Intensity ◽

Interval Training ◽

Male Rat ◽

High Intensity Interval Training ◽

High Intensity Interval

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Inhibition of Histone Deacetylases 4 and 5 Reduces Titin Proteolysis and Prevents Reduction of TTN Gene Expression in Atrophied Rat Soleus Muscle after Seven-Day Hindlimb Unloading

Doklady Biochemistry and Biophysics ◽

10.1134/s1607672920060058 ◽

2020 ◽

Vol 495 (1) ◽

pp. 338-341

Author(s):

Yu. V. Gritsyna ◽

A. D. Ulanova ◽

S. S. Popova ◽

A. G. Bobylev ◽

V. K. Zhalimov ◽

...

Keyword(s):

Gene Expression ◽

Soleus Muscle ◽

Histone Deacetylases ◽

Hindlimb Unloading ◽

Rat Soleus Muscle

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The type I insulin-like growth factor receptor mediates the rapid effects of multiplication-stimulating activity on membrane transport systems in rat soleus muscle.

Journal of Biological Chemistry ◽

10.1016/s0021-9258(17)43264-9 ◽

1984 ◽

Vol 259 (5) ◽

pp. 3090-3095 ◽

Cited By ~ 12

Author(s):

K T Yu ◽

M P Czech

Keyword(s):

Growth Factor ◽

Membrane Transport ◽

Soleus Muscle ◽

Growth Factor Receptor ◽

Transport Systems ◽

Type I ◽

Insulin Like Growth Factor ◽

Rat Soleus Muscle ◽

Membrane Transport Systems

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Astaxanthin Prevents Atrophy in Slow Muscle Fibers by Inhibiting Mitochondrial Reactive Oxygen Species via a Mitochondria-Mediated Apoptosis Pathway

Nutrients ◽

10.3390/nu13020379 ◽

2021 ◽

Vol 13 (2) ◽

pp. 379

Author(s):

Luchuanyang Sun ◽

Nobuyuki Miyaji ◽

Min Yang ◽

Edward M. Mills ◽

Shigeto Taniyama ◽

...

Keyword(s):

Reactive Oxygen Species ◽

Lipid Bilayer ◽

Muscle Atrophy ◽

Soleus Muscle ◽

Reactive Oxygen ◽

H2o2 Production ◽

Oxygen Species ◽

Mitochondrial Reactive Oxygen Species ◽

Tail Suspension ◽

Apoptosis Pathway

Astaxanthin (AX) is a carotenoid that exerts potent antioxidant activity and acts in the lipid bilayer. This study aimed to investigate the effects of AX on muscle-atrophy-mediated disturbance of mitochondria, which have a lipid bilayer. Tail suspension was used to establish a muscle-atrophied mouse model. AX diet fed to tail-suspension mice prevented loss of muscle weight, inhibited the decrease of myofiber size, and restrained the increase of hydrogen peroxide (H2O2) production in the soleus muscle. Additionally, AX improved downregulation of mitochondrial respiratory chain complexes I and III in the soleus muscle after tail suspension. Meanwhile, AX promoted mitochondrial biogenesis by upregulating the expressions of adenosine 5′-monophosphate–activated protein kinase (AMPK) α-1, peroxisome proliferator–activated receptor (PPAR)-γ, and creatine kinase in mitochondrial (Ckmt) 2 in the soleus muscle of tail-suspension mice. To confirm the AX phenotype in the soleus muscle, we examined its effects on mitochondria using Sol8 myotubes derived from the soleus muscle. We found that AX was preferentially detected in the mitochondrial fraction; it significantly suppressed mitochondrial reactive oxygen species (ROS) production in Sol8 myotubes. Moreover, AX inhibited the activation of caspase 3 via inhibiting the release of cytochrome c into the cytosol in antimycin A–treated Sol8 myotubes. These results suggested that AX protected the functional stability of mitochondria, alleviated mitochondrial oxidative stress and mitochondria-mediated apoptosis, and thus, prevented muscle atrophy.

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Ultrasound Imaging Evaluation of Textural Features in Athletes with Soleus Pathology—A Novel Case-Control Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18041983 ◽

2021 ◽

Vol 18 (4) ◽

pp. 1983 ◽

Cited By ~ 1

Author(s):

Blanca De-la-Cruz-Torres ◽

Emmanuel Navarro-Flores ◽

Daniel López-López ◽

Carlos Romero-Morales

Keyword(s):

Ultrasound Imaging ◽

Soleus Muscle ◽

Muscle Injury ◽

Intraclass Correlation ◽

Muscle Thickness ◽

Tendon Injury ◽

Muscle Injuries ◽

Imaging Evaluation ◽

Rater Reliability ◽

Group A

Background: the aim of this study was to compare the echotexture of patients with soleus muscle injury and age matched controls. Methods: a sample of 62 athletes was recruited at the private clinic and was divided in two group: a healthy group (n = 31) and a soleus pathology group whose athletes had soleus muscle injury, located in the central tendon (n = 31). The muscle thickness (MTh), echointensity (EI) and echovariation (EV) were analyzed. An intra-rater reliability test (Intraclass Correlation Coefficient-ICC) was performed in order to analyze the reliability of the values of the measurements. Results: Sociodemographic variables did not show statistically significant differences (p > 0.05). Ultrasound imaging measurements who reported statistically significant differences were EI (p = 0.001) and standard deviation (SD) (p = 0.001). MTh and EV variables did not show statistically significant differences (p = 0.381 and p = 0.364, respectively). Moreover, reliability values for the MTh (ICC = 0.911), EI (ICC = 0.982), SD (ICC = 0.955) and EV (ICC = 0.963). Based on these results the intra-rater reliability was considered excellent. Conclusion: Athletes with a central tendon injury of soleus muscle showed a lower EI when they were compared to healthy athletes. The echogenicity showed by the quantitative ultrasound imaging measurement may be a more objective parameter for the diagnosis and follow-up the soleus muscle injuries.

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