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The effect of acute fluid consumption on measures of impedance and percent body fat using leg-to-leg bioelectrical impedance analysis.
Eur J Clin Nutr 2006; 60(1):142-6EJ

Abstract

OBJECTIVE

To examine the effect of acute fluid consumption on measures of impedance and percent body fat (%BF) using a common leg-to-leg bioelectrical impedance analyzer system.

DESIGN

Cross-sectional design with treatment order determined using a counterbalanced assignment.

SETTING

University laboratory.

SUBJECTS

In total, 21 recreationally active men (mean age 19.7 +/- 1.0 years; body mass index 24.2 +/- 2.3 kg/m2) volunteered to participate in this study.

INTERVENTION

Subjects had their body composition assessed on three separate occasions. After an initial baseline body composition measurement, subjects consumed 591 ml of water (H2O), a carbohydrate/electrolyte drink (CHOE), or received nothing, used as the control (CON). Subjects were reassessed 20, 40, and 60 min after baseline (POST). Urine specific gravity (USG) was recorded at baseline and 60 min POST to assess hydration state.

RESULTS

There were no significant changes in impedance or total body water (TBW) for any of the measurement time periods after drinking H2O or a CHOE beverage. Body weight (BW) (P < 0.0001) and %BF (P < 0.02) increased significantly 20 min POST and remained elevated at the 40 and 60 min POST time periods. After drinking, USG significantly decreased (P<0.0001) 60 min POST from baseline. For the CON trial, there were no significant changes in BW, %BF, TBW, or USG over time.

CONCLUSIONS

Fluid consumption had no effect on lower-body impedance despite causing significant changes in hydration state. A slight overestimation in %BF (approximately 0.5%) was observed due to increased BW in the H20 and CHOE trials. This finding may have little practical significance when assessing body composition by LBIA.

Authors+Show Affiliations

Department of Health Science, Lock Haven University, Lock Haven, PA 17745, USA. cdixon@lhup.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

16234840

Citation

Dixon, C B., et al. "The Effect of Acute Fluid Consumption On Measures of Impedance and Percent Body Fat Using Leg-to-leg Bioelectrical Impedance Analysis." European Journal of Clinical Nutrition, vol. 60, no. 1, 2006, pp. 142-6.
Dixon CB, LoVallo SJ, Andreacci JL, et al. The effect of acute fluid consumption on measures of impedance and percent body fat using leg-to-leg bioelectrical impedance analysis. Eur J Clin Nutr. 2006;60(1):142-6.
Dixon, C. B., LoVallo, S. J., Andreacci, J. L., & Goss, F. L. (2006). The effect of acute fluid consumption on measures of impedance and percent body fat using leg-to-leg bioelectrical impedance analysis. European Journal of Clinical Nutrition, 60(1), pp. 142-6.
Dixon CB, et al. The Effect of Acute Fluid Consumption On Measures of Impedance and Percent Body Fat Using Leg-to-leg Bioelectrical Impedance Analysis. Eur J Clin Nutr. 2006;60(1):142-6. PubMed PMID: 16234840.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of acute fluid consumption on measures of impedance and percent body fat using leg-to-leg bioelectrical impedance analysis. AU - Dixon,C B, AU - LoVallo,S J, AU - Andreacci,J L, AU - Goss,F L, PY - 2005/10/20/pubmed PY - 2006/4/21/medline PY - 2005/10/20/entrez SP - 142 EP - 6 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 60 IS - 1 N2 - OBJECTIVE: To examine the effect of acute fluid consumption on measures of impedance and percent body fat (%BF) using a common leg-to-leg bioelectrical impedance analyzer system. DESIGN: Cross-sectional design with treatment order determined using a counterbalanced assignment. SETTING: University laboratory. SUBJECTS: In total, 21 recreationally active men (mean age 19.7 +/- 1.0 years; body mass index 24.2 +/- 2.3 kg/m2) volunteered to participate in this study. INTERVENTION: Subjects had their body composition assessed on three separate occasions. After an initial baseline body composition measurement, subjects consumed 591 ml of water (H2O), a carbohydrate/electrolyte drink (CHOE), or received nothing, used as the control (CON). Subjects were reassessed 20, 40, and 60 min after baseline (POST). Urine specific gravity (USG) was recorded at baseline and 60 min POST to assess hydration state. RESULTS: There were no significant changes in impedance or total body water (TBW) for any of the measurement time periods after drinking H2O or a CHOE beverage. Body weight (BW) (P < 0.0001) and %BF (P < 0.02) increased significantly 20 min POST and remained elevated at the 40 and 60 min POST time periods. After drinking, USG significantly decreased (P<0.0001) 60 min POST from baseline. For the CON trial, there were no significant changes in BW, %BF, TBW, or USG over time. CONCLUSIONS: Fluid consumption had no effect on lower-body impedance despite causing significant changes in hydration state. A slight overestimation in %BF (approximately 0.5%) was observed due to increased BW in the H20 and CHOE trials. This finding may have little practical significance when assessing body composition by LBIA. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/16234840/The_effect_of_acute_fluid_consumption_on_measures_of_impedance_and_percent_body_fat_using_leg_to_leg_bioelectrical_impedance_analysis_ L2 - http://dx.doi.org/10.1038/sj.ejcn.1602282 DB - PRIME DP - Unbound Medicine ER -