Evidence map›Paper›PMID 40611594›Full record

Trial reportJournal of the International Society of Sports Nutrition2025

Measuring bioelectric impedance outputs following coffee consumption in healthy adults using an 8-electrode segmental BIA device.

Christopher Chamberlin, Aldo Lena, Dimple Radia, Dale Rees, John Lodge, James Rutherford, Bruno Cesar da Silva Dos Santos, Bhaven Patel, Shawn McLaren

Abstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of the International Society of Sports Nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Christopher ChamberlinSchool of Human Sciences, London Metropolitan University, London, UK.
Aldo LenaSchool of Human Sciences, London Metropolitan University, London, UK.
Dimple RadiaSchool of Human Sciences, London Metropolitan University, London, UK.
Dale ReesSchool of Human Sciences, London Metropolitan University, London, UK.
John LodgeSchool of Human Sciences, London Metropolitan University, London, UK.
James RutherfordSchool of Biosciences, University of Surrey, Guildford, UK.
Bruno Cesar da Silva Dos SantosSchool of Human Sciences, London Metropolitan University, London, UK.
Bhaven PatelSchool of Human Sciences, London Metropolitan University, London, UK.
Shawn McLarenSchool of Allied Health Professionals, University of Winchester, Winchester, UK.ORCID 0000-0003-3357-7909

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionBioelectric impedance analysis (BIA) is increasingly used to measure body composition in athletic, clinical and research settings. The reliability of BIA measurements relies on following procedures carefully. However, some practices for ensuring reliable measures may be unnecessarily restrictive. Previous research using BIA outputs as study outcome measures, has required participants to avoid coffee and caffeine-containing foods and beverages prior to measurements. The aim of this study was to determine whether BIA outputs are affected by coffee consumption at different caffeine concentrations.

methodsThis study used a blinded, randomized, cross-over trial design. Participants (

resultsThe treatment predictor (

conclusionChanges in impedance, resistance and reactance were detected over the course of the experiment, and these changes were greater than could be explained by the technical error of measurement. However, the amount of caffeine in coffee did not affect BIA outputs. Effect sizes were small, suggesting little practical significance of drinking coffee before taking BIA measurements. Therefore, coaches, athletes, researchers and clinicians may be able to obtain reliable BIA measurements even when coffee has been consumed up to 50 minutes prior to measurements, however, fluid consumption and being adequately hydrated should still be considered.

Indexed as

Body CompositionCaffeineCoffeeElectric ImpedanceAdultCross-Over StudiesFemaleHumansMaleReproducibility of ResultsYoung AdultCaffeineCoffeeBIAbioimpedance analysiscoffeenutrition assessmentreliability

Identifiers

PMID40611594
PMCPMC12231244

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.