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1990 | 41 | 7 |
Tytuł artykułu

Importance of dynamics of sweating in men during exercise

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Grucza R. and Hänninen O.: Importance of dynamics of sweating in men during exercise. Acta Physiol. Pol. Influence of dynamics of sweating on rectal temperature increase was tested in 3 groups of men performing cycle exercise with intensity of 65, 90 and 120 W, respectively, in 22°C chamber temperature and 30% of relative air humidity. During exercise at 65 and 90 W the subjects wore suits while exercising with intensity of 120 W they wore only shorts. The dynamics of sweating was described by delay in onset of sweating and time constant of the reaction. Wearing caused significant increase in skin humidity and decreased evaporative rate of sweating. Sweat rate during steady state was related to the metabolic rate in naked (r = 0.89, p < 0.002) as well as in wearing subjects (r = 0.93, p < 0.01). Delay in onset of sweating was, in average, 5 min with a time constant of 7 min. Both factors showed a tendency to be shorter with increasing work intensity. Mean increase in rectal temperature was proportional to the intensity of exercise although the individual ATre correlated well with the dynamics of sweating in naked (r = 0.83, p < 0.01) and wearing subjects (r = 0.84, p < 0.01). Since ΔTre was smaller in subjects with shorter inertia time of sweating in response to beginning of exercise at the same intensity it is concluded that the dynamics of sweating can play an important role in limiting body temperature increase in working men.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
41
Numer
7
Opis fizyczny
p.65-75,fig.,ref.
Twórcy
autor
  • Department of Applied Physiology, Medical Research Centre, Polish Academy of Sciences, Jazgarzewska 17, 00-730 Warsaw, Poland
autor
  • Department of Physiology, University of Kuopio, 70-211 Kuopio, Finland
Bibliografia
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  • 2. Bullard R. W.: Studies on human sweat gland duct filling and skin hydration. J. Physiol. (Paris), 63, 218-221 (1971).
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  • 7. Grucza R.: Relationship between electrical skin resistance and rectal temperature in man during physical exercise. Acta Physiol. Pol., 35, 293-298 (1984).
  • 8. Grucza R., Lecroart J. L., Hauser J. J. and Houdas Y.: Dynamics of sweating in men and women during passive heating. Eur J. Appl. Physiol., 54, 309-314 (1985).
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  • 11. Houdas Y.: Development of a new concept on temperature regulation in man. Acta Physiol. Pol. Suppl., 14, 1-9 (1977).
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  • 13. Nadel E. R., Pandolf К. B., Roberts M. F. and Stolwijk J. A. J.: Mechanisms of thermal acclimation to exercise and heat. J. Appl. Physiol., 37, 515-520 (1974).
  • 14. Nielsen B.: Thermoregulation in rest and exercise. Acta Physiol. Scand. Suppl.: 323, 1-74 (1969).
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  • 16. Saltin B., Gagge A. P. and Stolwijk J. A. J.: Body temperatures and sweating during thermal transients caused by exercise. J. Appl. Physiol., 28, 318-327 (1970).
  • 17. Saltin B., Gagge A. P., Bergh V. and Stolwijk J. A. J.: Body temperature and sweating during exhaustive exercise. J. Appl. Physiol., 32, 635-643 (1972).
  • 18. Sawka M. N., Francesconi R. P., Pimental N. A. and Pandolf K. P.: Hydration and vascular fluid shifts during exercise in the heat. J. Appl. Physiol.: Respirat. Environ. Exercise Physiol., 56, 91-96 (1984).
  • 19. Shapiro Y., Pandolf K. B., Avellini B. A., Pimental N. A., Goldman R. F.: Physiological responses of men and women to humid and dry heat. J. Appl. Physiol.: Respirat. Environ. Exercise Physiol., 49, 1-8 (1980).
  • 20. Stolwijk J. A. J., Saltin B. and Gagge A. P.: Physiological factors associated with sweating during exercise. J. Aerospace Med., 39, 1101-1105 (1967).
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
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