Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Markers of hydration status.

S M Shirreffs1

  • 1University Medical School, Foresterhill, Aberdeen, Scotland. s.m.shirreffs@abdn.ac.uk

The Journal of Sports Medicine and Physical Fitness
|May 24, 2000
PubMed
Summary

Accurately assessing human hydration status is crucial for exercise performance. While various methods exist, urinary indices are more sensitive than blood markers for detecting moderate dehydration, yet no single gold standard is available.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Executive summary and conclusions from the European Hydration Institute Expert Conference on human hydration, health, and performance.

Nutrition reviews·2015
Same author

Hydration and performance during Ramadan.

Journal of sports sciences·2012
Same author

Dehydration and rehydration in competative sport.

Scandinavian journal of medicine & science in sports·2010
Same author

Hydration: special issues for playing football in warm and hot environments.

Scandinavian journal of medicine & science in sports·2010
Same author

Living, training and playing in the heat: challenges to the football player and strategies for coping with environmental extremes.

Scandinavian journal of medicine & science in sports·2010
Same author

Hydration and sweating responses to hot-weather football competition.

Scandinavian journal of medicine & science in sports·2010

Area of Science:

  • Exercise Physiology
  • Human Physiology
  • Sports Science

Background:

  • Hydration status significantly impacts human physiological function and exercise performance.
  • Moderate hypohydration, even levels frequently encountered during exercise, can impair physical capacity.
  • Accurate assessment of hydration is essential for athletes and clinicians.

Purpose of the Study:

  • To review and discuss methods for determining whole-body hydration status in humans.
  • To evaluate the sensitivity and applicability of various hydration assessment techniques.
  • To identify the most effective markers for detecting hypohydration, particularly in exercise contexts.

Main Methods:

  • Literature review of established and emerging hydration assessment techniques.
  • Discussion of physiological indices including body mass changes, urinary measures (volume, color, specific gravity, osmolality), and blood-borne markers (hemoglobin, hematocrit, plasma osmolality, hormones).
  • Evaluation of bioelectrical impedance analysis and cardiovascular responses to postural changes.

Main Results:

  • Urinary indices such as color, specific gravity, and osmolality demonstrate higher sensitivity in detecting moderate hypohydration compared to blood markers like hematocrit and serum osmolality.
  • No single "gold standard" method currently exists for accurately assessing hydration status, especially for moderate dehydration levels common in exercise.
  • The selection of an appropriate hydration marker depends on required sensitivity, accuracy, technical feasibility, time constraints, and cost.

Conclusions:

  • Urinary measures offer a practical and sensitive approach for monitoring hydration status in exercise settings.
  • Further research may be needed to develop a universally accepted gold standard for hydration assessment.
  • Practical considerations significantly influence the choice of hydration assessment method in real-world scenarios.

Related Experiment Videos