Bioelectrical impedance changes of the trunk are opposite the limbs following acute hydration change
Publié en ligne: 25 juin 2022
Pages: 25 - 30
Reçu: 26 avr. 2022
© 2022 Dale R. Wagner, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Fig.1
Changes from baseline in body mass (solid bars) and SMFBIA-estimated total body water (hashed bars) following A) dehydration and B) hyperhydration.Mean ± SD of the sample (N = 11) for the dehydration trial.
Variable |
Baseline |
Post-Dehydration |
Change from baseline (%) |
Pairwise p-value |
Cohen's d effect size |
Body mass (kg) |
78.0 ± 20.4 |
765 ± 20.2 |
-2.0±0.6 |
<0.001 |
2,71 |
TBW (kg) |
48.9 ± 12.8 |
49.2 ± 12.5 |
0.9 ± 2.5 |
0.374 |
0.28 |
FFM (kg) |
66.9 ± 17.7 |
67.1 ± 17.1 |
0.6 ± 2.5 |
0.617 |
0.16 |
Body fat (%) |
14.1 ± 7.3 |
11.6 ± 8.1 |
-24.6 ±23.6 |
0.004 |
1.11 |
Z RA 20 kHz (Ω) |
306.2 ± 60.4 |
281.4 ± 48.4 |
-7.7 ± 4.6 |
0.001 |
1.37 |
Z LA 20 kHz (Ω) |
309.5 ±62.6 |
282.9 ± 50.1 |
-8.2 ± 4.3 |
<0.001 |
1.54 |
Z RL 20 kHz (Ω) |
251.1 ± 33.6 |
232.1 ± 31.0 |
-7.5 ± 4.2 |
<0.001 |
1.82 |
Z LL 20 kHz (Ω) |
250.6 ±33.8 |
230.4 ±29.1 |
-7.9 ± 4.4 |
< 0.001 |
1.70 |
ZTR 20 kHz (Ω) |
21.1 ± 3.0 |
22.5 ± 3.1 |
6.9 ± 8.8 |
0.029 |
0.77 |
Z RA 100 kHz (Ω) |
270.3 ± 57.3 |
246.8 ±46.1 |
-8.2 ± 4.9 |
0.001 |
1.37 |
Z LA 10D kHz (Ω) |
273.8 ± 59.7 |
249.4 ± 47.5 |
-8.4 ± 4.9 |
0.001 |
1.42 |
Z RL 100 kHz(Ω) |
219.0 ±31.7 |
202.7 ±28.8 |
-7.3 ± 4.3 |
<0.001 |
1.75 |
Z LL 100 kHz (Ω) |
218.1 ± 31.7 |
200.9 ± 27.5 |
-7.7 ± 4.3 |
<0.001 |
1,71 |
Z TR 100 kHz (Ω) |
17.1 ± 2.9 |
18.2 ± 3.1 |
6.6 ± 8.1 |
0.023 |
0.81 |
Mean ± SD of the sample (N = 11) for the hyperhydration trial.
Variable |
Baseline |
Post-Hyperhydration |
Change from baseline (%) |
Pairwise p-value |
Cohen's d effect size |
Body mass (kg) |
78.0 ± 20.6 |
78.9 ± 20.8 |
1.2 ± 0.2 |
< 0.001 |
4.18 |
TBW (kg) |
48,8 ± 12.7 |
49.0 ± 13.0 |
0.3 ± 09 |
0.240 |
0.38 |
FFM (kg) |
66.7 ± 17.4 |
67.0 ± 17.9 |
0.3 ± 0.9 |
0.242 |
0.38 |
Body fat (%) |
13.8 ± 8.4 |
14.7 ± 8.1 |
10.8 ± 15.6 |
0.024 |
0.80 |
Z RA 20 kHz (Ω) |
309.6 ± 58.3 |
314.9 ± 64.7 |
1.4 ± 2.7 |
0.079 |
0.59 |
Z LA 20 kHz (Ω) |
314,0 ± 60.1 |
318.3 ± 65.2 |
1.2 ± 2.7 |
0.149 |
0.47 |
Z RL 20 kHz (Ω) |
252.8 ± 35.1 |
257.4 ± 43.3 |
1.5 ± 3.8 |
0.168 |
0.45 |
Z LL 20 kHz (Ω) |
251.4 ± 35.5 |
255.8 ± 44.0 |
1.4 ± 4.0 |
0.195 |
0.42 |
Z TR 20kHz(Ω) |
21.2 ± 3.3 |
20.9 ± 3.1 |
-1.3 ± 2.7 |
0.099 |
0.55 |
Z RA 100 kHz (Ω) |
272.2 ± 55.6 |
276.5 ± 60.8 |
1.3 ± 2.8 |
0.100 |
0.55 |
Z LA 100 kHz (Ω) |
276.8 ± 57.3 |
280.3 ± 61.5 |
1.0 ± 2.7 |
0.179 |
0.44 |
Z RL 100 kHz (Ω) |
220.5 ± 32.8 |
224.5 ± 39.2 |
1.5 ± 3.6 |
0.141 |
0.48 |
Z LL 100 kHz (Ω) |
218.5 ± 32.9 |
222.5 ± 39.5 |
1.5 ± 3.5 |
0.131 |
0.50 |
Z TR 100 kHz (Ω) |
16.9 ± 3.1 |
16.7 ± 3.1 |
-1.5 ± 3.2 |
0.154 |
0.47 |