Table 1 Proton density fat fraction (PDFF), relative cross-sectional area (relCSA), and relative maximum voluntary isometric contraction (relMVIC) in extension and flexion

 PDFF quadriceps (%)

Left

2.7 ± 1.3

3.6 ± 1.3

0.162

Right

1.7 ± 1.3

2.7 ± 1.3

0.105

 PDFF ischiocrural (%)

Left

3.2 ± 1.6

4.6 ± 2.0

0.091

Right

2.6 ± 1.9

4.9 ± 2.4

0.025

 relCSA quadriceps (%)

Left

26.5 ± 4.0

21.3 ± 4.1

0.010

Right

25.8 ± 4.2

21.8 ± 3.7

0.035

 relCSA ischiocrural (%)

Left

8.3 ± 2.4

6.0 ± 2.4

0.045

Right

7.5 ± 3.0

6.6 ± 1.6

0.418

 relMVIC in extension (N*m³/kg)

Left

8.0 ± 1.2

5.9 ± 1.0

< 0.001

Right

8.8 ± 1.3

6.4 ± 0.9

< 0.001

 relMVIC in flexion (N*m³/kg)

Left

4.0 ± 0.6

3.0 ± 0.5

< 0.001

Right

4.3 ± 0.6

2.7 ± 0.7

< 0.001