scholarly journals Effects of Deficits in the Neuromuscular and Mechanical Properties of the Quadriceps and Hamstrings on Single-Leg Hop Performance and Dynamic Knee Stability in Patients After Anterior Cruciate Ligament Reconstruction

2022 ◽  
Vol 10 (1) ◽  
pp. 232596712110638
Author(s):  
Xin He ◽  
Jihong Qiu ◽  
Mingde Cao ◽  
Yui Chung Ho ◽  
Hio Teng Leong ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Shear Modulus ◽  
Muscle Activation ◽  
Cruciate Ligament ◽  
Muscle Stiffness ◽  
Emg Activity ◽  
Knee Stability ◽  
Peak Knee ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

Background: Understanding the role of neuromuscular and mechanical muscle properties in knee functional performance and dynamic knee stability after anterior cruciate ligament reconstruction (ACLR) may help in the development of more focused rehabilitation programs. Purpose: To compare the involved and uninvolved limbs of patients after ACLR in terms of muscle strength, passive muscle stiffness, muscle activation of the quadriceps and hamstrings, hop performance, and dynamic knee stability and to investigate the association of neuromuscular and mechanical muscle properties with hop performance and dynamic knee stability. Study Design: Cross-sectional study; Level of evidence, 3. Method: The authors studied the quadriceps and hamstring muscles in 30 male patients (mean ± SD age, 25.4 ± 4.1 years) who had undergone unilateral ACLR. Muscle strength was measured using isokinetic testing at 60 and 180 deg/s. Passive muscle stiffness was quantified using ultrasound shear wave elastography. Muscle activation was evaluated via electromyographic (EMG) activity. Hop performance was evaluated via a single-leg hop test, and dynamic knee stability was evaluated via 3-dimensional knee movements during the landing phase of the hop test. Results: Compared with the uninvolved limb, the involved limb exhibited decreased peak torque and shear modulus in both the quadriceps and hamstrings as well as delayed activity onset in the quadriceps ( P < .05 for all). The involved limb also exhibited a shorter hop distance and decreased peak knee flexion angle during landing ( P < .05 for both). Decreased peak quadriceps torque at 180 deg/s, the shear modulus of the semitendinosus, and the reactive EMG activity amplitude of the semimembranosus were all associated with shorter hop distance ( R 2 = 0.565; P < .001). Decreased quadriceps peak torque at 60 deg/s and shear modulus of the vastus medialis were both associated with smaller peak knee flexion angle ( R 2 = 0.319; P < .001). Conclusion: In addition to muscle strength deficits, deficits in passive muscle stiffness and muscle activation of the quadriceps and hamstrings were important contributors to poor single-leg hop performance and dynamic knee stability during landing. Further investigations should include a rehabilitation program that normalizes muscle stiffness and activation patterns during landing, thus improving knee functional performance and dynamic knee stability.

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.

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.

scholarly journals Effects of passive muscle stiffness measured by Shear Wave Elastography, muscle thickness, and body mass index on athletic performance in adolescent female basketball players

2018 ◽  
Vol 20 (2) ◽  
pp. 170 ◽  
Author(s):  
Orkun Akkoc ◽  
Emine Caliskan ◽  
Zuhal Bayramoglu
Keyword(s):  
Athletic Performance ◽  
Vertical Jump ◽  
Muscle Thickness ◽  
Shear Wave Elastography ◽  
Significant Negative Correlation ◽  
Muscle Stiffness ◽  
Aerobic Performance ◽  
Adolescent Female ◽  
Passive Muscle ◽  
Passive Muscle Stiffness

Aims: Athletic performance in basketball comprises the contributions of anaerobic and aerobic performance. The aim was to investigate the effects of passive muscle stiffness, using shear wave elastography (SWE), as well as muscle thickness, and body mass index (BMI), on both aerobic and anaerobic performances in adolescent female basketball players.Material and methods: Anaerobic and aerobic (VO2max) performance was assessed using the vertical jump and shuttle run tests, respectively, in 24 volunteer adolescent female basketball players. Passive muscle stiffness of the rectus femoris (RF), gastrocnemius medialis (GM), gastrocnemius lateralis (GL) and soleus muscles were measured by SWE, and the thickness of each muscle was assessed by gray scale ultrasound. The BMI of each participant was also calculated. The relationship between vertical jump and VO2max values, and those of muscle stiffness, thickness, and BMI were investigated via Pearson’s correlation and multivariate linear regression analysis.Results: No significant correlation was observed between muscle stiffness and VO2max or vertical jump (p>0.05). There was significant negative correlation between GL thickness and VO2max (p=0.026), and soleus thickness and VO2max (p=0.046). There was also a significant negative correlation between BMI and VO2max (p=0.001). Conclusions: This preliminary work can be a reference for future research. Although our article indicates that passive muscle stiffness measured by SWE is not directly related to athletic performance, future comprehensive studies should be performed in order to illuminate the complex nature of muscles. The  maintenance of lower muscle thickness and optimal BMI may be associated with better aerobic performance.

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