Table 2 Tissue sodium content and tissue water content

Na⁺ [mM]

Triceps surae

 Mean (SD)

10.83 (1.15)

12.77 (0.90)

11.43 (1.51)

9.93 (0.79)

11.58 (1.13)

10.33 (1.12)

 ∆ (%)

+18

− 10

+17

− 11

 P value

<0.0001

0.0090

0.0081

0.0002

Medial gastrocnemius

 Mean (SD)

10.50 (0.78)

13.65(0.69)

11.67 (1.30)

10.23 (1.24)

12.67 (1.28)

10.75 (1.11)

 ∆ (%)

+30

− 15

+24

− 15

 P value

0.0005

0.0182

0.0007

0.0002

Lateral gastrocnemius

 Mean (SD)

11.60 (1.58)

13.85 (2.01)

11.83 (1.54)

9.33 (0.82)

11.67 (2.01)

9.65 (1.44)

 ∆ (%)

+19

− 15

+25

− 17

 P value

0.0060

0.0023

0.0373

0.0099

Soleus

 Mean (SD)

10.85 (1.58)

11.58 (1.34)

10.95 (1.59)

9.63 (0.58)

10.33 (1.56)

9.60 (0.89)

 ∆ (%)

+7

− 5

+7

− 7

 P value

0.0197

0.1334

0.3220

0.0974

Extensors

 Mean (SD)

12.20 (1.66)

11.87 (1.37)

11.77 (1.81)

9.38 (0.71)

10.10 (1.28)

9.97 (1.45)

 ∆ (%)

− 3

− 1

+8

− 1

 P value

0.5354

0.9014

0.2492

0.7796

H₂O [kg/L]

Triceps surae

 Mean (SD)

1.16 (0.09)

1.16 (0.06)

–

1.16(0.07)

1.16 (0.07)

–

 ∆ (%)

0

0

 P value

0.8590

0.7131

Medial gastrocnemius

 Mean (SD)

1.19 (0.08)

1.19 (0.05)

–

1.21(0.07)

1.19 (0.07)

–

 ∆ (%)

0

− 1

 P value

0.8240

0.2078

Lateral gastrocnemius

 Mean (SD)

1.10 (0.10)

1.08 (0.07)

–

1.09 (0.08)

1.09 (0.06)

–

 ∆ (%)

− 2

0

 P value

0.2676

0.7558

Soleus

 Mean (SD)

1.19 (0.09)

1.20 (0.06)

–

1.20 (0.08)

1.20 (0.08)

–

 ∆ (%)

+1

0

 P value

0.4045

0.8302

Extensors

 Mean (SD)

1.22 (0.10)

1.24 (0.10)

–

1.21 (0.07)

1.23 (0.08)

–

 ∆ (%)

+2

+1

 P value

0.1345

0.5989