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Age-Related Thermal Strain in Men While Wearing Radiation Protective Clothing During Short-Term Exercise in the Heat

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The aim of the study was to compare heat strain among different age groups of men in protective clothing during short-term physical work. Eight young (20-29 years), 6 middle-aged (41-55 years), and 6 older (58-65 years) men exercised for 30 min on a cycle ergometer (40% VO2 max) in 2 hot environments with a similar WBGT (ca. 26 ºC): once with minimal clothing without infrared radiation (E1), and once with aluminized protective clothing under infrared radiation (E2). All subjects had sedentary jobs, but only the older subjects were physically active in their leisure-time. Body temperatures, heart rate, sweat rate, and subjective feelings were determined during the tests. Higher thermal strain was observed in E2 than in E1. No age-related differences in thermal strain were observed in either experiment indicating that active older men can tolerate short work periods with protective clothing in the heat as well as younger sedentary men.
Rocznik
Strony
361--367
Opis fizyczny
Bibliogr. 26 poz., rys., tab.
Twórcy
  • Central Institute for Labour Protection - National Research Institute, Warsaw, Poland
autor
  • ORTON Orthopaedic Hospital and ORTON Research Institute, Helsinki, Finland
  • Central Institute for Labour Protection - National Research Institute, Warsaw, Poland
Bibliografia
  • 1. Holmér I. Protective clothing and heat stress. Ergonomics 1995;38:166-82.
  • 2. Shvartz E, Reibold RC. Aerobic fitness norms for males and females aged 6 to 75 years: a review. Aviat Space Environ Med 1990;61:3-11.
  • 3. Drinkwater BL, Horvath SM. Heat tolerance and aging. Med Sci Sports 1979;11:49-55.
  • 4. Wagner CB, Robinson S, Tzankoff SP, Marino RP. Heat tolerance and acclimatization to work in the heat in relation to age. J Appl Physiol 1972;33:616-22.
  • 5. Pandolf KB. Aging and human heat tolerance. Exp Aging Res 1997;23(1):69-105.
  • 6. Smolander J, Korhonen O, Ilmarinen R. Responses of young and older men during prolonged exercise in dry and humid heat. Eur J Appl Physiol 1990;61:413-8.
  • 7. Marszałek A, Smolander J, Sołtyński K, Sobolewski A. Physiological strain of wearing aluminized protective clothing at rest in young, middle-aged and older men. Int J Ind Ergon 1999;25:195-202.
  • 8. DuBois D, DuBois EF. Clinical calorimetry, tenth paper: a formula to estimate the approximate surface area if height and weight be known. Arch Intern Med 1916;1:863-71.
  • 9. Durnin JVGA, Womersley J. Body fat assessed from total body density and its estimation from skinfold thickness: measurements on 481 men and women aged from 16 to 72 years. Br J Nutr 1974;32:77-97.
  • 10. International Organization for Standardization (ISO). Hot environments - estimation of the heat stress on working man, based on the WBGT-index (wet bulb globe temperature) (Standard No. ISO 7243:1989). Geneva, Switzerland: ISO; 1989.
  • 11. International Organization for Standardization (ISO). Ergonomics of the thermal environment - estimation of the thermal insulation and evaporative resistance of a clothing ensemble (Standard No. ISO 9920:1995). Geneva, Switzerland: ISO; 1995.
  • 12. Åstrand P-O, Ryhming IA. A nomogram for calculation of aerobic capacity from pulse rate during submaximal work. J Appl Physiol 1954;7:218-21.
  • 13. International Organization for Standardization (ISO). Evaluation of thermal strain by physiological measurements (Standard No. ISO 9886:1992). Geneva, Switzerland: ISO; 1992.
  • 14. Burton AC. Human calorimetry. II. The average temperature of the tissue of the body. J Nutr 1935;9:261-80.
  • 15. Nielsen R, Endrusick TL. Sensation of temperature and humidity during alternative work/rest influence of underwear knit structure. Ergonomics 1990;33:221-34.
  • 16. Aoyagi Y, McLean TM, Shephard RJ. Interactions of physical training and heat acclimation. The thermophysiology of exercising in a hot climate. Sports Med 1997;23:173-210.
  • 17. Araki T. Effect of physical training on thermoregulatory responses to alternate stress of heat and cold. Japanese Journal of Physical Fitness and Sports Medicine 1980;29:75-81.
  • 18. Smorawiński J, Grucza R, Kozłowski S. Thermoregulatory adaptation to exercise in the course of endurance training. In Nazar K, Terjung RL, Kaciuba-Uściłko H, Budohoski L (editors). International perspectives in exercise physiology. Champaign, IL, USA: Human Kinetics Books; 1990. p. 188-91.
  • 19. Tankersley CG, Smolander J, Kenney WL, Fortney SM. Sweating and skin blood flow during exercise: effects of age and maximal oxygen uptake. J Appl Physiol 1991;71:236-42.
  • 20. Kenney WL, Havenith G. Aging, skin blood flow and heat tolerance. In: Proceedings of the International Conference on Human-Environment System, Tokyo, Japan. 1991. p. 87-89.
  • 21. Pandolf KB, Cadarette BS, Sawka MN, Young AJ, Francesconi RP, Gonzales RR. Thermoregulatory responses of middle-aged and young men during dry-heat acclimation J Appl Physiol 1988;65(1):65-71.
  • 22. Kenney WL. Control of heat-induced cutaneous vasodilatation in relation to age. Eur J Appl Physiol 1988;57:120-5.
  • 23. Armstrong CG, Kenney WL. Effects of age and acclimation on response to passive heat exposure. J Appl Physiol 1993;75:2162-7.
  • 24. Phillips PA, Rolls BJ, Ledingham JGG, Forsling ML, Morton JJ, Crowe MJ, Wollner L. Reduced thirst in healthy elderly men. N Engl J Med 1984;311:753-9.
  • 25. Crowe MJ, Forsling ML, Rolls BJ, Phillips PA, Ledingham JGG, Smith RF. Altered water secretion in healthy elderly men. Age Ageing 1987;16:285-93.
  • 26. Mack GW, Weseman CA, Langhans GW, Scherzer H, Gillen CM, Nadel ER. Body fluid balance in dehydrated healthy older men: thirst and renal osmoregulation. J Appl Physiol 1994;76:1615-23.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-cd7e0bd5-459a-42f7-821d-a746c6317427
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