ArticleBMJ open sport & exercise medicine2018
Dehydration is how you define it: comparison of 318 blood and urine athlete spot checks.
Article in BMJ open sport & exercise medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
What it found
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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.
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.
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Who cites it
27 citing papers in PubMed, 39 citations in OpenAlex.
- Increased Vulnerability to Dehydration Due to Heat Stress and Drought Across Reproductive States for Pastoralist Women in Northern Kenya.American journal of human biology : the official journal of the Human Biology Council · 2026Article
- The accuracy of a 4-item hydration self-assessment model to classify urine concentration using different cut-offs.Performance nutrition · 2026Article
- Almond protein and whey protein beverages elicit comparable appetite regulation, gastrointestinal symptoms and hydration responses in postmenopausal women: a randomised crossover trial.Frontiers in nutrition · 2026Article
- Wireless Soft Athlete Bioelectronics for Monitoring Carbon Dioxide Ventilation and Physiological Performance.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Hydration Strategies in Older Adults.Nutrients · 2025Review
- A Comparative Analysis of Hydration Status Among Urban and Rural Adults in Selangor, Malaysia.Cureus · 2025Article
- No hyponatremia despite continuous plasma sodium decline in female runners during a seven stage ultramarathon.Scientific reports · 2025Article
- A 3D color model reports urine color similarly to a printed color chart with similar accuracy to determine a low vs. high urine concentration.Performance nutrition · 2025Article
- All-in-One, Wireless, Multi-Sensor Integrated Athlete Health Monitor for Real-Time Continuous Detection of Dehydration and Physiological Stress.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- A New Method for Detecting Dehydration of the Human Body Using Non-Contact Millimeter Wave Radiometry.Sensors (Basel, Switzerland) · 2024Article
- The weight, urine colour and thirst Venn diagram is an accurate tool compared with urinary and blood markers for hydration assessment at morning and afternoon timepoints in euhydrated and free-living individuals.The British journal of nutrition · 2024Article
- A century of exercise physiology: concepts that ignited the study of human thermoregulation. Part 3: Heat and cold tolerance during exercise.European journal of applied physiology · 2024Review
- Fluid Balance, Sodium Losses and Hydration Practices of Elite Squash Players during Training.Nutrients · 2023Article
- Assessment of Changes in Physiological Markers in Different Body Fluids at Rest and after Exercise.Nutrients · 2022Review
- Article
- Hydration Status in Men Working in Different Thermal Environments: A Pilot Study.International journal of environmental research and public health · 2022Article
- Prevalence of Dehydration and The Relationship with Fluid Intake and Self-Assessment of Hydration Status in Czech First League Soccer Players.Journal of human kinetics · 2022Article
- Validity of Urine Color Scoring Using Different Light Conditions and Scoring Techniques to Assess Urine Concentration.Journal of athletic training · 2022Article
- Validation of urine colour L*a*b* for assessing hydration amongst athletes.Frontiers in nutrition · 2022Article
- Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Clinical medicine defines dehydration using blood markers that confirm hypertonicity (serum sodium concentration ([Na
objectiveTo compare blood versus urine indices of dehydration in a cohort of athletes undergoing routine screenings.
methods318 collegiate athletes (193 female) provided blood and urine samples and asked to rate how thirsty they were on a 10-point visual analogue scale. Serum was analysed for [Na
resultsUsing UOsm ≥700 mOsmol/kgH
conclusionUrine concentration thresholds classified 27%-55% of collegiate athletes as dehydrated, while no athlete was dehydrated according to blood [Na
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What OpenQuestion holds
Registered trials
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.