Results 41 to 50 of about 1,945,583 (386)

Three-dimensional geometrical changes of the human tibialis anterior muscle and its central aponeurosis measured with three-dimensional ultrasound during isometric contractions [PDF]

PeerJ, 2016
Background. Muscles not only shorten during contraction to perform mechanical work, but they also bulge radially because of the isovolumetric constraint on muscle fibres.
Brent J. Raiteri, Andrew G. Cresswell, Glen A. Lichtwark   +2 more
doaj   +2 more sources

Assessment of pelvic floor muscle contraction with palpation, perineometry and transperineal ultrasound: a cross‐sectional study

Ultrasound in Obstetrics and Gynecology, 2016
To study the correlation between palpation, perineometry and transperineal ultrasound for assessment of pelvic floor muscle contraction and to define a contraction scale for ultrasound measurements.
I. Volløyhaug, S. Mørkved, Øyvind Salvesen, K. Salvesen   +3 more
semanticscholar   +1 more source

Structure of the Inhibited Smooth Muscle Myosin and Its Implications on the Regulation of Insect Striated Muscle Myosin

Life
Class II myosin (myosin-2) is an actin-based motor protein found in nearly all eukaryotes. One critical question is how the motor function of myosin-2 is regulated. Vertebrate myosin-2 comprises non-muscle myosin, smooth muscle myosin and striated muscle
Shaopeng Sun, Yi-Ning Lu, Xiang-dong Li
doaj   +1 more source

Dynamics of PO2 and VO2 in resting and contracting rat spinotrapezius muscle

Frontiers in Physiology, 2023
This study examined changes in interstitial PO2, which allowed calculation of VO2 during periods of rest, muscle contraction and recovery using an in situ rat spinotrapezius muscle preparation.
Aleksander S. Golub, Aleksander S. Golub, Bjorn K. Song, Bjorn K. Song, William H. Nugent, William H. Nugent, Roland N. Pittman   +6 more
doaj   +1 more source

Investigating the Correlation between Force Output, Strains, and Pressure for Active Skeletal Muscle Contractions [PDF]

arXiv, 2023
Experimental observations suggest that the force output of the skeletal muscle tissue can be correlated to the intra-muscular pressure generated by the muscle belly. However, pressure often proves difficult to measure through in-vivo tests. Simulations on the other hand, offer a tool to model muscle contractions and analyze the relationship between ...
arxiv  

Identification of a third myosin-5a-melanophilin interaction that mediates the association of myosin-5a with melanosomes

eLife
Transport and localization of melanosome at the periphery region of melanocyte are depended on myosin-5a (Myo5a), which associates with melanosome by interacting with its adaptor protein melanophilin (Mlph).
Jiabin Pan, Rui Zhou, Lin-Lin Yao, Jie Zhang, Ning Zhang, Qing-Juan Cao, Shaopeng Sun, Xiang-dong Li   +7 more
doaj   +1 more source

Upper Limbs Muscle Co-contraction Changes Correlated With the Impairment of the Corticospinal Tract in Stroke Survivors: Preliminary Evidence From Electromyography and Motor-Evoked Potential

Frontiers in Neuroscience, 2022
ObjectiveIncreased muscle co-contraction of the agonist and antagonist muscles during voluntary movement is commonly observed in the upper limbs of stroke survivors. Much remain to be understood about the underlying mechanism.
Wenfei Sheng, Shijue Li, Jiangli Zhao, Yujia Wang, Zichong Luo, Wai Leung Ambrose Lo, Minghui Ding, Chuhuai Wang, Le Li   +8 more
doaj   +1 more source

The Mechanism of Muscle Contraction [PDF]

Proceedings of the National Academy of Sciences, 1974
Muscular contraction is essentially the shortening of the S 2 subunits of heavy meromyosin, integrated to macroscopic motion by the thick and thin filaments.
openaire   +3 more sources

Determination of Dissociation Constants for the Interaction of Myosin-5a with its Cargo Protein Using Microscale Thermophoresis (MST)

Bio-Protocol
Myosin-5a (Myo5a) is an actin-dependent molecular motor that recognizes a diverse range of cargo proteins through its tail domain, playing a crucial role in the transport and localization of various organelles within the cell.
Rui Zhou, Jiabin Pan, Xiang-Dong Li
doaj   +1 more source

The effect of the aluminum chloride – quercetin complex on Ca(2+),Mg(2+)-ATPase activity and contraction dynamic properties of muscle tibialis anterior from Rana temporaria [PDF]

The Ukrainian Biochemical Journal, 2015
Combined effect of aluminum chloride and quercetin solutions on the enzymatic activity and contraction dynamics of muscle fiber bundles of the Rana temporaria m. tibialis anterior was investigated.
D. M. Nozdrenko, O. M. Аbramchuk, V. M. Soroca, N. S. Miroshnichenko   +3 more
doaj   +1 more source