<I>The Roles of Central and Peripheral Mechanisms in the Sweat Rate Change during Exercise</I>

DOI
  • YAMAZAKI F
    Doctoral Program in Health and Sport Sciences, University of Tsukuba
  • KONDO N
    Department of Education, University of Kobe
  • IKEGAMI H
    Institute of Health and Sport Sciences, University of Tsukuba

Bibliographic Information

Other Title
  • 運動時の発汗量の変化に対する中枢機構と末梢機構の関与

Abstract

This study was conducted to determine the roles of central and peripheral mechanisms of sweating during exercise. Six healthy males each performed 40-min bicycle exercise at 500, 700 and 900 kpm/min at ambient temperature of 25°C (45%RH) . Rectal temperature (Tre), mean body temperature (Tb), mean skin temperature, local sweat rate, frequency of sweat expulsions, etc. were measured. The following results were obtained: 1) Slopes of relationship between local sweat rate and body temperature changed with a breaking point at specific temperature (Tre and Tb were about 37.7°C and 36.8°C, respectively) during exercise. 2) The rate of increase in mean skin temperature peaked at the above breaking point. 3) With the increase in work rate, the local sweat rate for a given body temperature (Tre, Tb) became higher. 4) The sensitivity of central sudomotor and sweat gland decreased when mean body temperature exceeded 36.8°C. 5) With the increase in work rate, central sudomotor activity was enhanced, but no distinct change could be detected in sweat gland activity. It was concluded that a remarkable change occurs in the central and peripheral mechanisms for sweat regulation at a mean body temperature of about 36.8°C during exercise.

Journal

Details

  • CRID
    1390001204786748672
  • NII Article ID
    130003818686
  • DOI
    10.11227/seikisho1966.28.95
  • ISSN
    13477617
    03891313
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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