Effects of Heat Exposure on Body Water Assessed using Single-Frequency Bioelectrical Impedance Analysis and Bioimpedance Spectroscopy
Nickerson BS, Esco MR, Bishop PA, Kliszczewicz BM, Williford HN, Park KS, Welborn BA, Snarr RL, Tolusso DV
International journal of exercise science · 11 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2017-01-01 · Int J Exerc Sci · vol. 10 · issue 7 · pp. 1085–1093
- Publisher
- Berkeley Electronic Press
- Cited
- 13 citations · more than 64% of similar papers · 0.4× the field average
- References
- 20 works
- Access
- Open access (free to publish) · CC-BY-ND
- Research areas
- Body Composition Measurement Techniques · Thermoregulation and physiological responses · Sports Performance and Training
- Keywords
- Bioelectrical impedance analysis, Body water, Limits of agreement, Extracellular fluid, Animal science, Chemistry, Body weight, Mean difference, Medicine, Extracellular, Internal medicine, Nuclear medicine, Body mass index, Biochemistry, Biology
9 authors
From US
- Brett S. NickersonTexas A&M International University; University of Alabama
- Michael R. EscoUniversity of Alabama
- Phillip A. BishopLiberty University
- Brian M. KliszczewiczKennesaw State University
- Henry N. WillifordAuburn University at Montgomery
- Kyung-Shin ParkTexas A&M International University
Abstract
The purpose of this study was to determine if heat exposure alters the measures of total body water (TBW), extracellular water (ECW), and intracellular water (ICW) in both single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS). Additionally, we sought to determine if any differences exist between the BIA and BIS techniques before and after brief exposure to heat. Body water was evaluated for twenty men (age=24±4 years) in a thermoneutral environment (22°C) before (PRE) and immediately after (POST) 15 min of passive heating (35°C) in an environmental chamber. The mean difference and 95% limits of agreement at PRE demonstrated that BIS yielded significantly higher body water values than BIA (all p0.05; 0.2±1.5kg). Additionally, the ES of the mean differences at POST were trivial to small and the r-values were high (r≥0.96). When analyzing the changes in body water before and after heat exposure, POST values for BIS were significantly higher than PRE (all p<0.001; TBW=0.6±0.8kg; ECW=0.4±0.3kg; ICW=0.3±0.6kg). Similarly, POST values for BIA were significantly higher than PRE (all p<0.001; TBW=1.0±0.6kg; ECW=0.7±0.4kg; ICW=0.4±0.4kg). BIA and BIS provide similar body water estimates. However, the increase in POST body water values indicate more research is needed before either method can be used for estimating body water after heat exposure.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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