scholarly journals Elevated osmolytes in rainbow smelt: the effects of urea, glycerol and trimethylamine oxide on muscle contractile properties

2016 ◽  
Vol 219 (7) ◽  
pp. 1014-1021 ◽  
Author(s):  
David J. Coughlin ◽  
Gabrielle M. Long ◽  
Nicole L. Gezzi ◽  
Parth M. Modi ◽  
Kossivi N. Woluko
Keyword(s):  
Contractile Properties ◽  
Rainbow Smelt ◽  
Muscle Contractile Properties ◽  
Trimethylamine Oxide ◽  
Muscle Contractile

Effects of selenium supplementation on the muscle contractile properties, fatigue and antioxidant enzymes activities of gastrocnemius muscles in trained and untrained rats

2011 ◽  
Vol 1 (4) ◽  
pp. 226-232
Author(s):  
Mohanad R. Alwan ◽  
Oleksandr Krasilshchikov ◽  
Tengku Muzaffar Bin ◽  
Tengku Mohamad Shihabudin
Keyword(s):  
Lipid Peroxidation ◽  
Selenium Supplementation ◽  
Contractile Properties ◽  
Muscle Contractile Properties ◽  
Body Weights ◽  
Jumping Exercise ◽  
Antioxidant Enzymes Activities ◽  
Gastrocnemius Muscles ◽  
Muscle Contractile ◽  
Tetanic Tension

Selenium (Se) is an important component of cellular seleno Ã¢â‚¬Âcompounds andan integral component of glutathione Peroxidase (GPx), which catalyzes thereduction of harmful radicals produced during muscular exercise. The currentstudy was carried out to evaluate the muscle contractile properties andfatigue resistance of gastrocnemius muscle under selenium supplementationschemes in sedentary and exercise protocols as well as measure the antioxidantenzymes activity and lipid peroxidation. Rats were divided into fourgroups; sedentary Selenium supplementation (S), exercise Selenium (SE)groups, sedentary control (SC) and exercise control (EC) groups. The ratswere fed with 80 μg/kg body weights selenium for six weeks. The exerciseprotocol consisted the 40 jumps up to the height of 40 cm for 6 Ã¢â‚¬Âweek. Themuscle fatigue protocol consisted the trains of pulses of 40 Hz at every secondfor at least 2 min. Significant (P<0.05) increase was observed in treatedgroups than control in the muscle contractile properties like twitch tension(Pt), contraction time (CT) and twitch/tetanic tension Ratio (Pt/Po Ratio),tetanic tension (Po) and EMG amplitude. Decreased EMG failure and increasedfatigue index were observed in ES group. Moreover, a significant(P<0.05) increase and decrease in the GPx activity and lipid peroxidation respectivelywas also reported than SC and EC group. While there were nochanges reported in the activity of CAT and SOD enzymes. This study revealedthat the Se with jumping exercise induces muscle contractile propertiesand decreases the muscular fatigue.

scholarly journals Muscle Contractile Properties Measured at Submaximal Electrical Amplitudes and Not at Supramaximal Amplitudes Are Associated with Repeated Sprint Performance and Fatigue Markers

2021 ◽  
Vol 18 (21) ◽  
pp. 11689
Author(s):  
Alejandro Muñoz-López ◽  
Moisés de Hoyo ◽  
Borja Sañudo
Keyword(s):  
Rectus Femoris ◽  
Peak Torque ◽  
Sprint Performance ◽  
Contractile Properties ◽  
Practical Significance ◽  
Contraction Time ◽  
Repeated Sprints ◽  
Muscle Contractile Properties ◽  
Repeated Sprint ◽  
Muscle Contractile

Background: The present study analyzes the associations between the muscle contractile properties (MCP) measured at different neuromuscular electrical stimulation amplitudes (NMESa) and the performance or transient fatigue after a bout of repeated sprints. Methods: Seventeen physically active male subjects performed six repeated sprints of 30 m with 30 s of passive recovery. Capillary blood creatine kinase (CK) concentration, knee extension or flexion isometric peak torque, tensiomyography, and repeated sprint performance were assessed. Results: Muscle displacement and contraction time were different in relation to the NMESa used in the rectus femoris and biceps femoris muscles. At rest, significant (p < 0.05) associations were found between muscle displacement and the loss of time in the repeated sprints (sprint performance) at 20 or 40 mA in the rectus femoris. At post +24 h or +48 h, the highest significant associations were found between the muscle displacement or the contraction time and CK or peak torques also at submaximal amplitudes (20 mA). The NMESa which elicits the peak muscle displacement showed lack of practical significance. Conclusion: Although MCP are typically assessed in tensiomyography using the NMESa that elicit peak muscle displacement, a submaximal NMESa may have a higher potential practical application to assess neuromuscular fatigue in response to repeated sprints.

Tensiomyographic changes of muscle contractile properties in individuals with lower-limb amputation

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Hironori Fujishita ◽  
Noriaki Maeda ◽  
Yukio Urabe ◽  
Makoto Komiya ◽  
Shogo Sakai ◽  
...  
Keyword(s):  
Lower Limb ◽  
Contractile Properties ◽  
Lower Limb Amputation ◽  
Limb Amputation ◽  
Muscle Contractile Properties ◽  
Muscle Contractile

scholarly journals Mechanomyographic Measures of Muscle Contractile Properties are Influenced by Electrode Size and Stimulation Pulse Duration

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Francisco Piqueras-Sanchiz ◽  
Saúl Martín-Rodríguez ◽  
Fernando Pareja-Blanco ◽  
Luis Baraja-Vegas ◽  
Jorge Blázquez-Fernández ◽  
...  
Keyword(s):  
Pulse Duration ◽  
Contractile Properties ◽  
Electrode Size ◽  
Muscle Contractile Properties ◽  
Stimulation Pulse ◽  
Muscle Contractile

scholarly journals Impact of an acute bout of vibration on muscle contractile properties, creatine kinase and lactate dehydrogenase response

2013 ◽  
Vol 13 (6) ◽  
pp. 666-673 ◽  
Author(s):  
Moisés de Hoyo ◽  
Luis Carrasco ◽  
Marzo E. Da Silva-Grigoletto ◽  
Borja Sañudo ◽  
Javier Caballero-Villarraso ◽  
...  
Keyword(s):  
Creatine Kinase ◽  
Lactate Dehydrogenase ◽  
Contractile Properties ◽  
Acute Bout ◽  
Muscle Contractile Properties ◽  
Muscle Contractile
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