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Table 3 Correlation coefficients between muscle shear moduli of the superficial heads of the quadriceps and maximal isometric knee extension force (*: p < 0.05)

From: Age-related increase in muscle stiffness is muscle length dependent and associated with muscle force in senior females

Shear modulus

MIVC of young

MIVC of senior

30º

60º

90º

30º

60º

90º

VM

30º

 − 0.160

  

0.163

  

60º

 

0.350

  

 − 0.091

 

90º

  

 − 0.186

  

0.024

RF

30º

 − 0.052

  

 − 0.008

  

60º

 

 − 0.395

  

 − 0.485*

 

90º

  

 − 0.058

  

 − 0.117

VL

30º

0.157

  

 − 0.166

  

60º

 

 − 0.015

  

 − 0.280

 

90º

  

0.102

  

 − 0.297