The influence of coffee consumption on bioelectrical impedance parameters: a randomized, double-blind, cross-over trial

Background Bioelectrical impedance analysis (BIA) is a widely used method for estimating body composition. Avoiding foods/beverages containing caffeine is a frequently enforced pre-test protocol to ensure reliability of BIA measurements. However, few studies have evaluated whether this is necessary,...

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Bibliographic Details
Published in:European journal of clinical nutrition 2022-02, Vol.76 (2), p.212-219
Main Authors: Mota, João F., Gonzalez, Maria Cristina, Lukaski, Henry, Oto, Gabriela L., Trottier, Claire F., Tibaes, Jenneffer R. B., Prado, Carla M.
Format: Article
Language:English
Subjects:
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Adult
Adults
Beverages
Bioelectricity
Body composition
Body fat
Caffeine
Clinical Nutrition
Coffee
Cross-Over Studies
Double-Blind Method
Double-blind studies
Electric Impedance
Epidemiology
Error analysis
Food composition
Humans
Impedance
Internal Medicine
Medicine
Medicine & Public Health
Metabolic Diseases
Parameters
Public Health
Reactance
Reliability analysis
Reproducibility of Results
Water intake
Water intakes
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Summary:Background Bioelectrical impedance analysis (BIA) is a widely used method for estimating body composition. Avoiding foods/beverages containing caffeine is a frequently enforced pre-test protocol to ensure reliability of BIA measurements. However, few studies have evaluated whether this is necessary, with conflicting results. We aimed to determine whether the coffee consumption differing in caffeine content influences BIA parameters in healthy adults. Methods Twenty-five healthy adults were enrolled in a randomized, double-blind cross-over trial. Three amounts of caffeine were given with 200 mL of coffee: 0 mg (11 g of decaffeinated), 200 mg (5.5 g of caffeinated plus 5.5 g of decaffeinated), and 400 mg of caffeine (11 g of caffeinated). BIA measurements were conducted at 6 different times, and coefficient variations (CV) explored. Results No differences were observed for group × time interaction on impedance, resistance, or reactance ( p  > 0.05). Values of BIA parameters increased after 30-min of coffee consumption, independently of the caffeine dosage (all p   0.05). Conclusion Coffee consumption influenced BIA-derived results after 70-min but was not related to caffeine content, likely due to water intake.
ISSN:0954-3007
1476-5640
DOI:10.1038/s41430-021-00932-3