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Bioelectrical impedance changes of the trunk are opposite the limbs following acute hydration change Cover

Bioelectrical impedance changes of the trunk are opposite the limbs following acute hydration change

By: Dale R. Wagner  
Open Access
|Jun 2022

Figures & Tables

Fig.1

Changes from baseline in body mass (solid bars) and SMFBIA-estimated total body water (hashed bars) following A) dehydration and B) hyperhydration.
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_

VariableBaselinePost-DehydrationChange from baseline (%)Pairwise p-valueCohen's d effect size
Body mass (kg)78.0 ± 20.4765 ± 20.2-2.0±0.6<0.0012,71
TBW (kg)48.9 ± 12.849.2 ± 12.50.9 ± 2.50.3740.28
FFM (kg)66.9 ± 17.767.1 ± 17.10.6 ± 2.50.6170.16
Body fat (%)14.1 ± 7.311.6 ± 8.1-24.6 ±23.60.0041.11
Z RA 20 kHz (Ω)306.2 ± 60.4281.4 ± 48.4-7.7 ± 4.60.0011.37
Z LA 20 kHz (Ω)309.5 ±62.6282.9 ± 50.1-8.2 ± 4.3<0.0011.54
Z RL 20 kHz (Ω)251.1 ± 33.6232.1 ± 31.0-7.5 ± 4.2<0.0011.82
Z LL 20 kHz (Ω)250.6 ±33.8230.4 ±29.1-7.9 ± 4.4< 0.0011.70
ZTR 20 kHz (Ω)21.1 ± 3.022.5 ± 3.16.9 ± 8.80.0290.77
Z RA 100 kHz (Ω)270.3 ± 57.3246.8 ±46.1-8.2 ± 4.90.0011.37
Z LA 10D kHz (Ω)273.8 ± 59.7249.4 ± 47.5-8.4 ± 4.90.0011.42
Z RL 100 kHz(Ω)219.0 ±31.7202.7 ±28.8-7.3 ± 4.3<0.0011.75
Z LL 100 kHz (Ω)218.1 ± 31.7200.9 ± 27.5-7.7 ± 4.3<0.0011,71
Z TR 100 kHz (Ω)17.1 ± 2.918.2 ± 3.16.6 ± 8.10.0230.81

Mean ± SD of the sample (N = 11) for the hyperhydration trial_

VariableBaselinePost-HyperhydrationChange from baseline (%)Pairwise p-valueCohen's d effect size
Body mass (kg)78.0 ± 20.678.9 ± 20.81.2 ± 0.2< 0.0014.18
TBW (kg)48,8 ± 12.749.0 ± 13.00.3 ± 090.2400.38
FFM (kg)66.7 ± 17.467.0 ± 17.90.3 ± 0.90.2420.38
Body fat (%)13.8 ± 8.414.7 ± 8.110.8 ± 15.60.0240.80
Z RA 20 kHz (Ω)309.6 ± 58.3314.9 ± 64.71.4 ± 2.70.0790.59
Z LA 20 kHz (Ω)314,0 ± 60.1318.3 ± 65.21.2 ± 2.70.1490.47
Z RL 20 kHz (Ω)252.8 ± 35.1257.4 ± 43.31.5 ± 3.80.1680.45
Z LL 20 kHz (Ω)251.4 ± 35.5255.8 ± 44.01.4 ± 4.00.1950.42
Z TR 20kHz(Ω)21.2 ± 3.320.9 ± 3.1-1.3 ± 2.70.0990.55
Z RA 100 kHz (Ω)272.2 ± 55.6276.5 ± 60.81.3 ± 2.80.1000.55
Z LA 100 kHz (Ω)276.8 ± 57.3280.3 ± 61.51.0 ± 2.70.1790.44
Z RL 100 kHz (Ω)220.5 ± 32.8224.5 ± 39.21.5 ± 3.60.1410.48
Z LL 100 kHz (Ω)218.5 ± 32.9222.5 ± 39.51.5 ± 3.50.1310.50
Z TR 100 kHz (Ω)16.9 ± 3.116.7 ± 3.1-1.5 ± 3.20.1540.47
Language: English
Page range: 25 - 30
Submitted on: Apr 26, 2022
Published on: Jun 25, 2022
Published by: University of Oslo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2022 Dale R. Wagner, published by University of Oslo
This work is licensed under the Creative Commons Attribution 4.0 License.