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

[Changes in body fluids and minerals after cold adaptation]

P Srámek1, B Ulicný, L Janský

  • 1Fakulta tĕlesné výchovy a sportu, UK Praha, CSc.

Casopis Lekaru Ceskych
|September 13, 1993
PubMed
Summary

Cold adaptation reduces plasma volume loss and increases urine output. This 5-week cold acclimation programme (CAP) in volunteers shows significant fluid and ion shifts, impacting physiological responses to cold exposure.

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

The effects of sex, age and commensal way of life on levels of fecal glucocorticoid metabolites in spiny mice (Acomys cahirinus).

Physiology & behavior·2008
Same author

Thermal, cardiac and adrenergic responses to repeated local cooling.

Physiological research·2005
Same author

Steroids and thermogenesis.

Physiological research·2005
Same author

Dynamics of cytokine production in human peripheral blood mononuclear cells stimulated by LPS or infected by Borrelia.

Physiological research·2004
Same author

Relationship of pregnancy-associated plasma protein-a to renal function and dialysis modalities.

Kidney & blood pressure research·2004
Same author

Dynamics of cytokine production in human peripheral blood mononuclear cells stimulated by LPS or infected by Borrelia.

Physiological research·2003

Area of Science:

  • Physiology
  • Environmental Medicine
  • Human Adaptation

Context:

  • Understanding human physiological responses to cold environments is crucial for occupational safety and athletic performance.
  • Cold acclimation involves physiological adjustments to repeated cold exposure, but the precise fluid and ion shifts require detailed characterization.
  • Previous studies have indicated fluid shifts during acute cold immersion, but the long-term effects of adaptation are less understood.

Purpose:

  • To investigate and quantify the changes in fluid volume, blood volume, and electrolyte excretion during and after a 5-week cold acclimation programme (CAP).
  • To compare the physiological responses to acute cold immersion before and after the cold adaptation period.
  • To elucidate the role of aldosterone in mediating these fluid and ion shifts during cold adaptation.

Related Experiment Videos

Summary:

  • Six nonadapted volunteers underwent a 5-week cold acclimation programme (CAP) involving regular cold water immersion.
  • Plasma volume (PV) reduction was less pronounced after CAP (-12%) compared to the initial immersion (-18%).
  • Urine flow and urinary excretion of sodium (Na+) and potassium (K+) significantly increased after CAP, indicating enhanced diuresis and cation excretion despite reduced PV changes.

Impact:

  • Cold adaptation leads to a blunted plasma volume decrease and augmented renal excretion of water and electrolytes.
  • These findings suggest improved physiological regulation of fluid balance and ion homeostasis during cold exposure following adaptation.
  • The study provides valuable insights into the mechanisms of human acclimatization to cold, relevant for optimizing performance and safety in cold climates.