scholarly journals Stiff muscle fibers in calf muscles of patients with cerebral palsy lead to high passive muscle stiffness

2014 ◽  
Vol 32 (12) ◽  
pp. 1667-1674 ◽  
Author(s):  
Margie A. Mathewson ◽  
Henry G. Chambers ◽  
Paul J. Girard ◽  
Mayer Tenenhaus ◽  
Alexandra K. Schwartz ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Muscle Fibers ◽  
Muscle Stiffness ◽  
Passive Muscle ◽  
Passive Muscle Stiffness ◽  
Calf Muscles

scholarly journals Quantifying passive muscle stiffness in children with and without cerebral palsy using ultrasound shear wave elastography

2016 ◽  
Vol 58 (12) ◽  
pp. 1288-1294 ◽  
Author(s):  
Joline E Brandenburg ◽  
Sarah F Eby ◽  
Pengfei Song ◽  
Shirley Kingsley-Berg ◽  
William Bamlet ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

scholarly journals Changes in Titin Isoform Expression in Pacing-Induced Cardiac Failure Give Rise to Increased Passive Muscle Stiffness

Circulation ◽  
2002 ◽  
Vol 106 (11) ◽  
pp. 1384-1389 ◽  
Author(s):  
Yiming Wu ◽  
Stephen P. Bell ◽  
Karoly Trombitas ◽  
Christian C. Witt ◽  
Siegfried Labeit ◽  
...  
Keyword(s):  
Cardiac Failure ◽  
Muscle Stiffness ◽  
Isoform Expression ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

scholarly journals Velocity dependent passive muscle stiffness

2003 ◽  
Vol 74 (2) ◽  
pp. 283-283 ◽  
Author(s):  
J W Dunne ◽  
B J Singer ◽  
G T Allison
Keyword(s):  
Muscle Stiffness ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

Shear Wave Elastography for Noninvasive Quantification of Passive Muscle Stiffness in Typically Developing Children

PM&R ◽  
2013 ◽  
Vol 5 ◽  
pp. S199-S199 ◽  
Author(s):  
Joline E. Brandenburg ◽  
Sarah Eby ◽  
Bradford W. Landry ◽  
Ann M. Hoffman ◽  
Shigao Chen ◽  
...  
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Typically Developing ◽  
Typically Developing Children ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

scholarly journals COL5A1 rs12722 polymorphism is not associated with passive muscle stiffness and sports-related muscle injury in Japanese athletes

2019 ◽  
Author(s):  
Eri Miyamoto-Mikami ◽  
Naokazu Miyamoto ◽  
Hiroshi Kumagai ◽  
Kosuke Hirata ◽  
Naoki Kikuchi ◽  
...  
Keyword(s):  
Risk Factor ◽  
Muscle Injury ◽  
Muscle Stiffness ◽  
Joint Flexibility ◽  
Genotype Frequencies ◽  
Significant Difference ◽  
Type V ◽  
Straight Leg Raise ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

Abstract Background: Poor joint flexibility has been repeatedly proposed as a risk factor for muscle injury. The C-to-T polymorphism (rs12722) in the 3′-untranslated region of the collagen type V α1 chain gene ( COL5A1 ) is reportedly associated with joint flexibility. Flexibility of a normal joint is largely determined by passive muscle stiffness, which is influenced by intramuscular collagenous connective tissues including type V collagen. The present study aimed to test the hypothesis that the COL5A1 rs12722 polymorphism influences joint flexibility via passive muscle stiffness, and is accordingly associated with the incidence of muscle injury. Methods: In Study 1, we examined whether the rs12722 polymorphism is associated with joint flexibility and passive muscle stiffness in 363 healthy young adults. Joint flexibility was evaluated by passive straight-leg-raise and sit-and-reach tests, and passive muscle stiffness was measured using ultrasound shear wave elastography. In Study 2, the association of the rs12722 polymorphism with sports-related muscle injury was assessed in 1559 Japanese athletes. Muscle injury history and severity were assessed by a questionnaire. In both Study 1 and Study 2, the rs12722 C-to-T polymorphism in the COL5A1 was determined using the TaqMan SNP Genotyping Assay. Results: Study 1 revealed that the rs12722 polymorphism had no significant effect on range of motion in passive straight-leg-raise and sit-and-reach tests. Furthermore, there was no significant difference in passive muscle stiffness of the hamstring among the rs12722 genotypes. In Study 2, rs12722 genotype frequencies did not differ between the muscle injury and no muscle injury groups. Moreover, no association was observed between rs12722 polymorphism and severity of muscle injury. Conclusions: The present study does not support the view that COL5A1 rs12722 polymorphism has a role as a risk factor for sports-related muscle injury, or that it is a determinant for passive muscle stiffness in a Japanese population.

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