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

Muscular work as thermal behavior in humans

M Caputa, M Cabanac

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |June 1, 1980
    PubMed
    Summary

    In cold environments, brain temperature, not trunk temperature, drives human motivation for exercise. Maintaining comfortable brain temperature is key for physical activity in the cold.

    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

    Corticotropin Releasing Hormone and Body Weight Regulation: The Behavioral Approach.

    Nutritional neuroscience·2016
    Same author

    Effects of body temperature on post-anoxic oxidative stress from the perspective of postnatal physiological adaptive processes in rats.

    Journal of physiology and pharmacology : an official journal of the Polish Physiological Society·2016
    Same author

    Alliesthesia in visual and auditory sensations from environmental signals.

    Physiology & behavior·2007
    Same author

    Animal responses to extreme conditions: a lesson to biomedical research.

    Journal of physiology and pharmacology : an official journal of the Polish Physiological Society·2007
    Same author

    Stress-induced behaviour in adult and old rats: effects of neonatal asphyxia, body temperature and chelation of iron.

    Journal of physiology and pharmacology : an official journal of the Polish Physiological Society·2007
    Same author

    Seasonal changes in cryoprotectants concentrations in Helix pomatia snails.

    Journal of physiology and pharmacology : an official journal of the Polish Physiological Society·2007

    Area of Science:

    • Human physiology
    • Environmental thermoregulation
    • Exercise science

    Background:

    • Understanding human physiological responses to cold environments is crucial for optimizing performance and comfort.
    • Previous research has explored thermoregulation during exercise, but the specific role of brain temperature in driving muscular activity in the cold requires further investigation.

    Purpose of the Study:

    • To investigate the relationship between different body temperatures (esophageal, tympanic, forehead, hand) and pedaling work in a cold environment.
    • To determine the influence of face fanning and head insulation on thermoregulation and exercise performance.
    • To identify the primary determinant of motivation for muscular activity during cold exposure.

    Main Methods:

    • Human subjects pedaled a bicycle ergometer in a 10°C environment to achieve thermal comfort.
    • Esophageal (Tes), tympanic (Tty), forehead, and hand skin temperatures were recorded.
    • Pedaling work and sweating rate were measured, with experiments including face fanning and head insulation.

    Main Results:

    • Face fanning decreased Tty but increased Tes, with Tes being 1.5°C higher than Tty after intense pedaling.
    • Head covering led to a moderate increase in both Tes and Tty, reduced pedaling intensity to 16.7 W, and increased sweating.
    • Pedaling work was inversely proportional to intracranial (Tty) temperature and independent of trunk (Tes) temperature.

    Conclusions:

    • Brain temperature (Tty) is a more significant factor than trunk temperature (Tes) in regulating pedaling work in the cold.
    • Motivation for physical activity in cold conditions appears to be primarily governed by brain temperature.
    • These findings have implications for understanding human performance and comfort in cold climates.

    Related Experiment Videos