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Table 2 Correlation coefficients between knee extensor strength and quadriceps femoris size variables in sprinters and non-sprinters

From: Relationship of the knee extensor strength but not the quadriceps femoris muscularity with sprint performance in sprinters: a reexamination and extension

 

Isometric strength

Slow-velocity isokinetic strength

Fast-velocity isokinetic strength

 

r

P value

r

P value

r

P value

Sprinters

 Proximal CSA

0.340

0.009

0.339

0.009

0.186

0.163

 Middle CSA

0.450

< 0.001

0.523

< 0.001

0.518

< 0.001

 Distal CSA

0.381

0.003

0.463

< 0.001

0.451

< 0.001

 MV

0.491

< 0.001

0.531

< 0.001

0.421

0.001

Non-sprinters

 Proximal CSA

0.290

0.070

0.193

0.234

0.196

0.225

 Middle CSA

0.577

< 0.001

0.549

< 0.001

0.515

0.001

 Distal CSA

0.585

< 0.001

0.468

0.002

0.348

0.028

 MV

0.637

< 0.001

0.520

0.001

0.453

0.003

  1. CSA cross-sectional area, MV muscle volume