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 Concept Videos

Mechanism of heat transfer01:19

Mechanism of heat transfer

2.1K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
2.1K
Body Temperature01:25

Body Temperature

5.0K
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
5.0K
Body Temperature01:07

Body Temperature

1.6K
Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
1.6K
Thermoregulation01:26

Thermoregulation

2.6K
The human body has a sophisticated thermoregulation system that employs negative feedback mechanisms to maintain an optimal core temperature. When the core temperature drops, peripheral and central thermoreceptors send signals to the hypothalamus, activating the heat-promoting center. This center triggers several responses aimed at increasing the core temperature. First, vasoconstriction reduces the flow of warm blood from internal organs to the skin so that the heat is not lost from the skin,...
2.6K
Mechanisms of Heat Transfer01:14

Mechanisms of Heat Transfer

1.8K
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
1.8K
Requirements for Human Life01:26

Requirements for Human Life

14.4K
The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
14.4K

You might also read

Related Articles

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

Sort by
Same author

[Deleterious effects of heated tobacco on respiratory symptoms and lung function].

Revue des maladies respiratoires·2024
Same author

ClimApp-Integrating Personal Factors with Weather Forecasts for Individualised Warning and Guidance on Thermal Stress.

International journal of environmental research and public health·2021
Same author

Revue des maladies respiratoires actualites·2021
Same author

Transdermal nicotine in non-smokers: A systematic review to design COVID-19 clinical trials.

Respiratory medicine and research·2021
Same author

Two isothermal challenges yield comparable physiological and subjective responses.

European journal of applied physiology·2020
Same author

Effects of light transitions on measures of alertness, arousal and comfort.

Physiology & behavior·2020

Related Experiment Video

Updated: Feb 27, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

3.4K

Thermophysiological adaptations to passive mild heat acclimation.

H Pallubinsky1, L Schellen1,2, B R M Kingma1

  • 1Department of Human Biology and Movement Sciences, NUTRIM, Maastricht University, the Netherlands.

Temperature (Austin, Tex.)
|July 7, 2017
PubMed
Summary

Passive mild heat acclimation (PMHA) effectively improves heat resilience. This method lowers core body temperature, reduces water loss, and decreases blood pressure, demonstrating significant thermophysiological adaptations without exercise.

Keywords:
body temperature distributioncore temperatureheat adaptationpassive mild heat acclimationthermal physiology

More Related Videos

Using an Ingestible Telemetric Temperature Pill to Assess Gastrointestinal Temperature During Exercise
08:22

Using an Ingestible Telemetric Temperature Pill to Assess Gastrointestinal Temperature During Exercise

Published on: October 7, 2015

11.1K
Heat Tolerance Assays Using the Drosophila Activity Monitor System: A Guide to an Executable Application for Data Analysis
05:05

Heat Tolerance Assays Using the Drosophila Activity Monitor System: A Guide to an Executable Application for Data Analysis

Published on: December 13, 2024

1.1K

Related Experiment Videos

Last Updated: Feb 27, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

3.4K
Using an Ingestible Telemetric Temperature Pill to Assess Gastrointestinal Temperature During Exercise
08:22

Using an Ingestible Telemetric Temperature Pill to Assess Gastrointestinal Temperature During Exercise

Published on: October 7, 2015

11.1K
Heat Tolerance Assays Using the Drosophila Activity Monitor System: A Guide to an Executable Application for Data Analysis
05:05

Heat Tolerance Assays Using the Drosophila Activity Monitor System: A Guide to an Executable Application for Data Analysis

Published on: December 13, 2024

1.1K

Area of Science:

  • Physiology
  • Environmental Health
  • Thermoregulation

Background:

  • Active heat acclimation enhances thermophysiological parameters, but the effects of passive methods are less understood.
  • Passive mild heat acclimation (PMHA) simulates realistic daily temperature challenges.
  • Investigating PMHA's efficacy is crucial for understanding non-exercise-based heat adaptation.

Purpose of the Study:

  • To determine if PMHA induces comparable thermophysiological adaptations to active heat acclimation.
  • To assess changes in core and skin temperature, cardiovascular responses, and energy expenditure following PMHA.

Main Methods:

  • Participants underwent 7 days of daily 6-hour exposure to mild heat (approximately 33°C).
  • Physiological responses were measured during a controlled temperature ramp test before and after the acclimation period.
  • Key parameters monitored included core/skin temperature, water loss, blood pressure, skin blood flow, and energy expenditure.

Main Results:

  • PMHA significantly lowered core and proximal skin temperatures during heat exposure.
  • A reduction in water loss and decreased systolic and diastolic blood pressure were observed post-acclimation.
  • Skin blood flow decreased, while energy expenditure remained unchanged; distal skin temperature increased.

Conclusions:

  • PMHA, even with a mild heat stimulus, induces significant thermophysiological adaptations.
  • These adaptations enhance the body's resilience to heat stress.
  • PMHA offers a viable non-exercise strategy for improving heat tolerance.