Responses of distance runners and sprinters to exercise in a hot environment
Deutscher übersetzter Titel: | Reaktionen von Langstreckenlaeufern und Sprintern auf Belastungen in heissen Umgebungen |
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Autor: | Iron, Glenn L. |
Erschienen in: | Aviation, space and environmental medicine |
Veröffentlicht: | 58 (1987), 10, S. 948-953, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0095-6562, 1943-4448 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU198807008010 |
Quelle: | BISp |
Abstract
The responses of highly trained distance runners and track sprinters and age-matched untrained men were compared during bicycle ergometry in a 40 degree temperature-controlled environmental chamber. There were no differences among groups in rectal temperature following the 90 min exercise bout. Distance runners had a lower heart rate than either sprinters or untrained subjects. There was no difference in heart rate between sprinters and untrained subjects. Distance runners and sprinters had a much greater sweat rate than untrained subjects and dissipated a greater proportion of their total heat load by evaporation of sweat. Sprinters, however, had a lower sweat rate than distance runners in the hot environment and could only maintain as low a skin temperature as distance runners for 75 min of the 90 min session. Both aerobic training and anaerobic training confer some degree of protection from heat injury during exercise in a hot environment. However, sprinters have a higher heart rate and cannot sustain a low skin temperature as long as distance runners. Sprinters lost their advantage over untrained subjects in skin temperature after 75 min of exercise in a hot environment and did not have a lower heart rate than untrained subjects. Distance runners had a significantly lower heart rate and maintained a lower skin temperature than untrained subjects for the entire 90 min exercise bout. Verf.-Referat