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Worth the wait? Time course of supine shifts in body water compartments on variables of bioelectrical impedance analysis

Jeremy B. Ducharme

Jeremy B. Ducharme

Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
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Ducharme, Jeremy B.
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Holly Hall

Holly Hall

Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
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Hall, Holly
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Zachary J. Fennel

Zachary J. Fennel

Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
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Fennel, Zachary J.
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Avadney Gerard-Osbourne

Avadney Gerard-Osbourne

Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
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Gerard-Osbourne, Avadney
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Jonathan M. Houck

Jonathan M. Houck

  • Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
  • Department of Science, Husson UniversityBangor, ME, USA
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Houck, Jonathan M.
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Chloe Clark

Chloe Clark

Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
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Clark, Chloe
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Ann L. Gibson

Ann L. Gibson

Department of Health, Exercise, and Sports Sciences, University of New MexicoAlbuquerque, NM, USA
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Gibson, Ann L.
  
08 gen 2023
Worth the wait? Time course of supine shifts in body water compartments on variables of bioelectrical impedance analysis's Cover Image
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Pubblicato online: 08 gen 2023
Pagine: 96 - 105
Ricevuto: 13 ott 2022
DOI: https://doi.org/10.2478/joeb-2022-0014
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© 2022 Jeremy B. Ducharme, Holly Hall, Zachary J. Fennel, Avadney Gerard-Osbourne, Jonathan M. Houck, Chloe Clark, and Ann L. Gibson, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Fig. 1

Effect of time since transitioning from a vertical to a supine position on resistance (A), and reactance (B) over 15 minutes as assessed via the RJL Quantum Legacy analyzer (N=38). Open circles represent individual responses. *Denotes a statistically significant increase from baseline over the course of 15-minutes resting in a supine position (p<0.05).
Effect of time since transitioning from a vertical to a supine position on resistance (A), and reactance (B) over 15 minutes as assessed via the RJL Quantum Legacy analyzer (N=38). Open circles represent individual responses. *Denotes a statistically significant increase from baseline over the course of 15-minutes resting in a supine position (p<0.05).

Fig. 2

Effect of time since transitioning from a vertical to a supine position on intracellular water (A), extracellular water (B), and total body water (C) over 15 minutes as assessed via the RJL Quantum Legacy analyzer (N=38). Open circles represent individual responses. *Denotes a statistically significant decrease from baseline over the course of 15-minutes resting in a supine position (p<0.05).
Effect of time since transitioning from a vertical to a supine position on intracellular water (A), extracellular water (B), and total body water (C) over 15 minutes as assessed via the RJL Quantum Legacy analyzer (N=38). Open circles represent individual responses. *Denotes a statistically significant decrease from baseline over the course of 15-minutes resting in a supine position (p<0.05).

Fig. 3

Effect of time since transitioning from a vertical to a supine position on phase angle (A), and body fat percentage (B) over 15 minutes as assessed via the RJL Quantum Legacy analyzer (N=38). Open circles represent individual responses. *Denotes a statistically significant increase from baseline over the course of 15-minutes resting in a supine position (p<0.05).
Effect of time since transitioning from a vertical to a supine position on phase angle (A), and body fat percentage (B) over 15 minutes as assessed via the RJL Quantum Legacy analyzer (N=38). Open circles represent individual responses. *Denotes a statistically significant increase from baseline over the course of 15-minutes resting in a supine position (p<0.05).

Fig. 4

Bland and Altman plots of individual differences for the effect of time since transitioning from a vertical to a supine position on reactance (left side) and resistance (right side) (N = 38). The solid line represents a mean difference (bias) of zero. The dashed lines denote the upper and lower limits-of-agreement (bias ± [1.96×SD of the bias]). R2 represents the amount of variance explained by the average resistance or reactance. *p<0.05 significant systematic bias.
Bland and Altman plots of individual differences for the effect of time since transitioning from a vertical to a supine position on reactance (left side) and resistance (right side) (N = 38). The solid line represents a mean difference (bias) of zero. The dashed lines denote the upper and lower limits-of-agreement (bias ± [1.96×SD of the bias]). R2 represents the amount of variance explained by the average resistance or reactance. *p<0.05 significant systematic bias.

Fig. 5

Bland and Altman plots of individual differences for the effect of time since transitioning from a vertical to a supine position on intracellular water (ICW: left side), extracellular water (ECW: middle), and total body water (TBW: right side) (N = 38). The solid line represents a mean difference (bias) of zero. The dashed lines denote the upper and lower limits-of-agreement (bias ± [1.96×SD of the bias]). R2 represents the amount of variance explained by the average ICW, ECW, or TBW. *p<0.05 significant systematic bias.
Bland and Altman plots of individual differences for the effect of time since transitioning from a vertical to a supine position on intracellular water (ICW: left side), extracellular water (ECW: middle), and total body water (TBW: right side) (N = 38). The solid line represents a mean difference (bias) of zero. The dashed lines denote the upper and lower limits-of-agreement (bias ± [1.96×SD of the bias]). R2 represents the amount of variance explained by the average ICW, ECW, or TBW. *p<0.05 significant systematic bias.

Fig. 6

Bland and Altman plots of individual differences for the effect of time since transitioning from a vertical to a supine position on body fat (left side) and phase angle (right side) (N = 38). The solid line represents a mean difference (bias) of zero. The dashed lines denote the upper and lower limits-of-agreement (bias ± [1.96×SD of the bias]). R2 represents the amount of variance explained by the average value. *p<0.05 significant systematic bias.
Bland and Altman plots of individual differences for the effect of time since transitioning from a vertical to a supine position on body fat (left side) and phase angle (right side) (N = 38). The solid line represents a mean difference (bias) of zero. The dashed lines denote the upper and lower limits-of-agreement (bias ± [1.96×SD of the bias]). R2 represents the amount of variance explained by the average value. *p<0.05 significant systematic bias.

Average bioelectrical variables as assessed by the RJL Quantum Legacy device (N=38)

Variable Time since transitioning from a vertical to a supine position
0 min 5 min 10 min 15 min
R (Ω) 553.2±90 554.1±91 556.9±92 560.4±93*
Xc (Ω) 68.2±7.8 68.4±8.1 68.9±8.1* 69.6±8.1*
ICW (L) 20.9±4.8 20.9±4.8 20.8±4.8* 20.7±4.8*
ECW (L) 16.5±2.9 16.5±2.9 16.4±2.9* 16.3±2.9*
TBW (L) 37.4±7.5 37.4±7.6 37.2±7.6* 37.0±7.6*
PhA (°) 7.13±0.9 7.14±0.9 7.16±0.9 7.18±0.9
BF (%) 22.4±6.8 22.4±6.8 22.5±6.8* 22.5±6.8*

Participant demographics (mean ± SD)_

Men (n=16) Women (n=22) Total (N=38)
Age (years) 24.2 ± 3.9 22.8 ± 4.3 23.4 ±4.1
Height (cm) 177.7 ± 4.7 167.7 ± 9.0 171.9 ± 8.9
Body Mass (kg) 78.9 ± 10.2 65.0 ± 12.1 70.9 ± 13.2
Body Mass Index (kg/m2) 25.0 ± 4.6 23.1 ± 1.5 23.8 ± 3.3
Lingua:
Inglese
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1 volte all'anno
Argomenti della rivista:
Ingegneria, Bioingegneria ed ingegneria biomedicale, Elettronica biomedicale, Scienze biologiche, Biofisica, Medicina, Ingegneria biomedica, Fisica, Spettroscopia e metrologia
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