The thermophysiology of uncompensable heat stress: Physiological manipulations and individual characteristics

Sports Medicine

Volumn 29, Issue 5, 2000, Pages 329-359

  Cheung, Stephen S ^a   McLellan, Tom M ^b   Tenaglia, Sandra ^b  

^a DALHOUSIE UNIVERSITY   (Canada)

^b DEF AND CIV INST OF ENVIRON MED   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

ORAL CONTRACEPTIVE AGENT;

AGE; BODY COMPOSITION; CIRCADIAN RHYTHM; EVAPORATION; EXERCISE; EXERCISE TOLERANCE; FITNESS; HEAT ACCLIMATIZATION; HEAT EXCHANGE; HEAT STRESS; HEAT TOLERANCE; HUMAN; HYDRATION; INDUCED HYPOTHERMIA; MENSTRUAL CYCLE; PROTECTIVE CLOTHING; REVIEW; SWEATING; THERMOREGULATION; TRAINING;

EID: 0034024849     PISSN: 01121642     EISSN: None     Source Type: Journal    
DOI: 10.2165/00007256-200029050-00004     Document Type: Review

References (214)

1. 1. Bligh J. Regulation of body temperature in man and other mammals. In: Shitzer A, Eberhart RC, editors. Heat transfer in medicine and biology. New York (NY): Plenum Publishing, 1985: 15-51
2. 2. Gonzalez RR. Biophysics of heat transfer and clothing considerations. In: Pandolf KB, Sawka MN, Gonzalez RR, editors. Human performance physiology and environmental medicine in terrestrial extremes. Indianapolis (IA): Benchmark Press, 1988: 45-95
3. 3. Gardner JW, Kark JA, Karnei K, et al. Risk factors predicting exertional heat illness in male Marine Corps recruits. Med Sci Sports Exerc 1996; 28: 939-44
4. 4. Hancock PA. Task categorization and the limits of human per formance in extreme heat. Aviat Space Environ Med 1982; 53: 778-84
5. 5. Enander AE, Hygge S. Thermal stress and human performance. Scand J Work Environ Health 1990; 16 Suppl. 1: 44-50
6. 6. Nunneley SA. Design and evaluation of clothing for protection from heat stress: an overview. In: Mekjavic IB, Banister EW, Morrison JB, editors. Environmental ergonomics: sustaining human performance in harsh environments. Philadelphia (PA): Taylor & Francis, 1988: 87-98
7. 7. Givoni B, Goldman RF. Predicting rectal temperature response to work, environment, and clothing. J Appl Physiol 1972; 32: 812-22
8. 8. Haslam RA, Parsons KC. A comparison of models for predicting human response to hot and cold environments. Ergonomics 1987; 30: 1599-614
9. 9. Holmer I. Protective clothing and heat stress. Ergonomics 1995; 38: 166-82
10. 10. McLellan TM, Frim J. Heat strain with the Canadian Forces chemical defence clothing: problems and possible solutions. Aviat Space Environ Med 1994; 19: 379-99
11. 11. Nunneley SA. Heat stress in protective clothing: interactions among physical and physiological factors. Scand J Work Environ Health 1989; 15 Suppl. 1: 52-7
12. 12. Parsons KC. Protective clothing: heat exchange and physiological objectives. Ergonomics 1988; 31: 991-1007
13. 13. Shitzer A, Chato JC. Thermal interaction with garments. In: Shitzer A, Eberhart RC, editors. Heat transfer in medicine and biology. New York (NY): Plenum Press, 1985: 375-94
14. 14. Shitzer A, Eberhart RC. Heat generation, storage, and transport processes. In: Shitzer A, Eberhart RC, editors. Heat transfer in medicine and biology. New York (NY): Plenum Press, 1985: 137-52
15. 15. Aoyagi Y, McLellan TM, Shephard RJ. Interactions of physical training and heat acclimation: the thermophysiology of exercising in a hot climate. Sports Med 1997; 23: 173-210
16. 16. Sawka MN, Wenger CB. Physiological responses to acute exercise-heat stress. In: Pandolf KB, Sawka MN, Gonzalez RR, editors. Human performance physiology and environmental medicine in terrestrial extremes. Indianapolis (IA): Benchmark Press, 1988: 97-151
17. 17. Taylor NAS. Eccrine sweat glands: adaptations to physical training and heat acclimation. Sports Med 1986; 3: 387-97
18. 18. Craig FN, Moffitt JT. Efficiency of evaporative cooling from wet clothing. J Appl Physiol 1974; 36: 313-6
19. 19. Kenney WL, Lewis DA, Hyde DE, et al. Physiologically derived critical evaporative coefficients for protective clothing ensembles. J Appl Physiol 1987; 63: 1095-9
20. 20. Kakitsuba N, Gaul K, Michna H, et al. Dynamic moisture permeation through clothing. Aviat Space Environ Med 1988; 59: 49-53
21. 21. McLellan TM, Pope JI, Cain JB, et al. Effects of metabolic rate and ambient vapour pressure on heat strain in protective clothing. Eur J Appl Physiol 1996; 74: 518-27
22. 22. Kerslake DM. The stress of hot environments. London: Cambridge University Press, 1972
23. 23. Candas V, Libert JP, Vogt JJ. Human skin wettedness and evaporative efficiency of sweating. J Appl Physiol 1979; 46: 522-8
24. 24. Alber-Wallerstrom B, Holmer I. Efficiency of sweat evaporation in unacclimatized man working in a hot humid environment. Eur J Appl Physiol 1985; 54: 480-7
25. 25. Fanger PO. Thermal comfort: analysis and applications in environmental engineering. Copenhagen: Danish Technical Press, 1970
26. 26. Nishi, Y. Measurement of thermal balance of man. In: Cena K, Clark JA, editors. Bioengineering, thermal physiology and comfort. New York (NY): Elsevier Scientific Publishing Co., 1981: 29-39
27. 27. Gonzalez RR, McLellan TM, Withey WR, et al. Heat strain models applicable for protective clothing systems: comparison of core temperature response. J Appl Physiol 1997; 83: 1017-32
28. 28. Bomalaski SH, Chen YT, Constable SH. Continuous and intermittent personal microclimate cooling strategies. Aviat Space Environ Med 1995; 66: 745-50
29. 29. Constable SH, Bishop PA, Nunnelely SA, et al. Intermittent microclimate cooling during rest increases work capacity and reduces heat stress. Ergonomics 1994; 37: 277-85
30. 30. Latzka WA, Sawka MN, Montain SJ, et al. Hyperhydration: tolerance and cardiovascular effects during uncompensable exercise-heat stress. J Appl Physiol 1998; 84: 1858-64
31. 31. Shapiro Y, Pandolf KB, Sawka MN, et al. Auxiliary cooling: comparison of air-cooled vs. water-cooled vests in hot-dry and hot-wet environments. Aviat Space Environ Med 1982; 53: 785-9
32. 32. Montain SJ, Sawka MN, Cadarette BS, et al. Physiological tolerance to uncompensahle heat stress: effects of exercise intensity, protective clothing, and climate. J Appl Physiol 1994; 77: 216-22
33. 33. Sawka MN, Young AJ, Latzka WA, et al. Human tolerance to heat strain during exercise: influence of hydration. J Appl Physiol 1992; 73: 368-75
34. 34. Webb P. The physiology of heat regulation. Am J Physiol 1995; 268: R838-50
35. 35. Rasch W, Samson P, Cote J, et al. Heat loss from the human head during exercise. J Appl Physiol 1991; 71: 590-5
36. 36. Gonzalez RR, Levell CA, Stroschein LA, et al. Copper manikin and heat strain model evaluations of chemical protective ensembles for the technical cooperation program (TTCP). Technical report T94-4. Natick (MA): US Army Research Institute of Environmental Medicine, 1993
37. 37. Smolander J, Louhevaara V, Tuomi T, et al. Cardiorespiratory and thermal effects of wearing gas protective clothing. Int Arch Occup Environ Health 1984; 54: 261-70
38. 38. Duggan A. Energy cost of stepping in protective clothing ensembles. Ergonomics 1988; 31: 3-11
39. 39. Patton JF, Bidwell TE, Murphy MM, et al. Energy cost of wearing chemical protective clothing during progressive treadmill walking. Aviat Space Environ Med 1995; 66: 238-42
40. 40. Aoyagi Y, McLellan TM, Shephard RJ. Effects of training and acclimation on heat tolerance in exercising men wearing protective clothing. Eur J Appl Physiol 1994; 68: 234-45
41. 41. Matthew s DK, Fox EL, Tanzi J. Physiological responses during exercise and recovery in a football uniform. J Appl Physiol 1969; 26: 611-5
42. 42. Teitlebaum A, Goldman RF. Increased energy cost with multiple clothing layers. J Appl Physiol 1972; 32: 743-4
43. 43. Sullivan PJ, Mekjavic IB, Kakitsuba N. Determination of clothing microenvironment volume. Ergonomics 1987; 30: 1043-52
44. 44. Sullivan PJ, Mekjavic IB. Temperature and humidity within the clothing microenvironment. Aviat Space Environ Med 1992; 63: 186-92
45. 45. Wenger CB. Heat evaporation of sweat: thermodynamic considerations. J Appl Physiol 1972; 32: 456-9
46. 46. Nadel ER. Control of sweating rate while exercising in the heat. Med Sci Sports Exerc 1979; 11: 31-5
47. 47. McLellan TM. Work performance at 40°C with Canadian Forces biological and chemical protective clothing. Aviat Space Environ Med 1993; 64: 1094-100
48. 48. Candas V, Hoeft A. Clothing, assessment and effects on thermophysiological responses of man working in humid heat. Ergonomics 1995; 38: 115-27
49. 49. Duncan HW, Gardner GW, Barnard RJ. Physiological responses of men working in fire fighting equipment in the heat. Ergonomics 1979; 22: 521-7
50. 50. Faff J, Tutak T. Physiological responses to working with fire fighting equipment in the heat in relation to subjective fatigue. Ergonomics 1989; 32: 629-38
51. 51. While MK, Vercruyssen M, Hodous TK. Work tolerance and subjective responses to wearing protective clothing and respirators during physical work. Ergonomics 1989; 32: 1111-23
52. 52. White MK, Hodous TK, Vercruyssen M. Effects of thermal environment and chemical protective clothing on work tolerance, physiological responses, and subjective ratings. Ergonomics 1991; 34: 445-57
53. 53. McLellan TM, Jacobs I, Bain JB. Influence of temperature and metabolic rate on work performance with Canadian Forces NBC clothing. Aviat Space Environ Med 1993; 64: 587-94
54. 54. Amos D, Hansen R. The physiological strain induced by a new low burden chemical protective ensemble. Aviat Space Environ Med 1997; 68: 126-31
55. 55. McLellan TM, Meunier P, Livingstone S. Influence of a new vapor protective clothing layer on physical work tolerance times at 40°C. Aviat Space Environ Med 1992; 63: 107-13
56. 56. McLellan TM. Heat strain while wearing the current Canadian or a new hot-weather French NBC protective clothing ensemble. Aviat Space Environ Med 1996; 67: 1057-62
57. 57. Kraning II KK, Gonzalez RR. Physiological consequences of intermittent exercise during compensable and uncompensable heat stress. J Appl Physiol 1991; 71: 2138-45
58. 58. Craig FN, Garren HW, Frankel H, et al. Heat load and voluntary tolerance time. J Appl Physiol 1954; 6: 633-44
59. 59. Shvartz E, Benor D. Heat strain in hot and humid environments. Aerosp Med 1972; 43: 852-5
60. 60. Amos D, Gray B, Hansen R. A physiological evaluation of the chemical, biological combat suit under warm, humid and hot, dry climatic conditions. Defence Science and Technology Organisation technical report no. 0570. Melbourne: Aeronautical and Maritime Research Laboratory, 1997
61. 61. Antuñano MJ, Nunneley SA. Heat stress in protective clothing: validation of a computer model and the heat-humidity index (HH1). Aviat Space Environ Med 1992; 63: 1087-92
62. 62. Henane R, Bittel J, Viret R, et al. Thermal strain resulting from protective clothing of an armored vehicle crew in warm conditions. Aviat Space Environ Med 1979; 50: 599-603
63. 63. Cain JB, McLellan TM. A model of evaporation from the skin while wearing protective clothing. Int J Biometerol 1998; 41: 183-93
64. 64. Frisancho AR. Human adaptation: a functional interpretation. Ann Arbor (MI): University of Michigan Press, 1981
65. 65. Curley MD, Hawkins RN. Cognitive performance during a heat acclimatization regimen. Aviat Space Environ Med 1983; 54: 709-13
66. 66. Wenger CB. Human heat acclimatization. In: Pandolf KB, Sawka MN, Gonzalez RR, editors. Human performance physiology and environmental medicine in terrestrial extremes. Indianapolis (IA): Benchmark Press, 1988: 153-97
67. 67. Armstrong LE, Pandolf KB. Physical training, cardiorespiratory physical fitness and exercise-heat tolerance. In: Pandolf KB, Sawka MN, Gonzalez RR, editors. Human performance physiology and environmental medicine in terrestrial extremes. Indianapolis (IA). Benchmark Press, 1988: 199-226
68. 68. Wyndham CH. The physiology of exercise under heat stress. Ann Rev Physiol 1973; 35: 193-220
69. 69. Nadel ER, Pandolf KB, Roberts MF, et al. Mechanisms of thermal acclimation to exercise and heat. J Appl Physiol 1974; 37: 515-20
70. 70. Rowell LB. Human cardiovascular adjustments to exercise and thermal stress. Physiol Rev 1974; 54: 75-159
71. 71. Shvartz E, Magazanik A, Glick Z. Thermal responses during training in a temperate climate. J Appl Physiol 1974; 36: 572-6
72. 72. Windle CM, Davies NJ. The effect of fitness on performance in a hot environment wearing normal clothing and when wearing protective clothing. 7th International Conference on Environmental Ergonomics; 1996 Oct 27-Nov 1; Jerusalem. Tel Aviv. Freund Publishing House Ltd, 1996: 209-12
73. 73. Adolph EF. Physiology of man in the desert. New York (NY): Interscience, 1947
74. 74. Sawka MN. Body fluid responses and hypohydration during exercise-heat stress. In: Pandolf KB, Sawka MN, Gonzalez ER, editors. Human performance physiology and environmental medicine in terrestrial extremes. Indianapolis (IA): Benchmark Press, 1988: 227-66
75. 75. Sawka MN. Physiological consequences of hypohydration: exercise performance and thermoregulation. Med Sci Sports Exerc 1992; 24:657-70
76. 76. Armstrong LE, Hubbard RW, Jones BH, et al. Preparing Alberto Salazar for the heat of the 1984 Olympic marathon. Phys Sportsmed 1986; 14:73-81
77. 77. Armstrong LE, Hubbard RW, Szlyk PC, et al. Voluntary dehydration and electrolyte losses during prolonged exercise in the heat. Aviat Space Environ Med 1985; 56: 765-70
78. 78. Broad EM, Burke LM, Cox GR, et al. Body weight changes and voluntary fluid intakes during training and competition sessions in team sports. Int J Sport Nutr 1996; 6: 307-20
79. 79. Decastro JM. Age-related changes in natural spontaneous fluid ingestion and thirst in humans. J Gerontol 1992; 47: P321-30
80. 80. Engell DB, Maller O, Sawka MN, et al. Thirst and fluid intake following graded hypohydration levels in humans. Physiol Behav 1987; 40: 229-36
81. 81. Gore CJ, Bourdon PC, Woolford SM, et al. Involuntary dehydration during cricket. Int J Sports Med 1993; 14: 387-95
82. 82. Greenleaf JE. Problem: thirst, drinking behavior, and involuntary dehydration. Med Sci Sports Exerc 1992; 24: 645-56
83. 83. Hubbard RW, Sandick BL, Matthew WT, et al. Voluntary dehydration and alliesthesia for water. J Appl Physiol 1984; 57: 858-75
84. 84. Fortney SM, Vroman NB, Beckett WS, et al. Effect of exercise hemoconcentration and hyperosmolality on exercise responses. J Appl Physiol 1988; 65: 519-24
85. 85. Johnson JM, Park MK. Reflex control of skin blood flow by skin temperature: role of core temperature. J Appl Physiol 1979; 47: 1188-93
86. 86. Johnson JM. Central and peripheral adjustments to long-term exercise in humans. Can J Sport Sci 1987; 12 Suppl. 1: 84-85
87. 87. Nadel ER, Fortney SM, Wenger CB. Effect of hydration state on circulatory and thermal regulations. J Appl Physiol 1980; 49: 715-21
88. 88. Tankersley CG, Zappe DH, Meister TG, et al. Hypohydration affects forearm vascular conductance independent of heart rate during exercise. J Appl Physiol 1992; 73: 1232-7
89. 89. Fortney SM, Wenger CB, Bove JR, et al. Effect of hyperosmolality on control of blood flow and sweating. J Appl Physiol 1984; 57: 1688-95
90. 90. Fortney SM, Nadel ER, Wenger CB, et al. Effect of blood volume on sweating rate and body fluids in exercising humans. J Appl Physiol 1981; 51: 1594-600
91. 91. Noakes TD. Fluid replacement during exercise. Exerc Sport Sci Rev 1993; 21: 297-330
92. 92. Candas V, Libert J-P, Brandenberger G, et al. Thermal and circulatory responses during prolonged exercise at different levels of hydration. J Physiol (Paris) 1988; 83: 11-8
93. 93. Candas V, Libert JP, Brandenberger G, et al. Hydration during exercise: effects on thermal and cardiovascular adjustments. Eur J Appl Physiol 1986; 55: 113-22
94. 94. Ekblom B, Greenleaf CJ, Greenleaf JE, et al. Temperature regulation during exercise dehydration in man. Acta Physiol Scand 1970; 79: 475-83
95. 95. Sawka MN, Young AJ, Francesconi RP, et al. Thermoregulatory and blood responses during exercise at graded hypohydration levels. J Appl Physiol 1985; 59: 1394-401
96. 96. Montain SJ, Latzka WA, Sawka MN. Control of thermoregulatory sweating is altered by hydration level and exercise intensity. J Appl Physiol 1995; 79: 1434-9
97. 97. Strydom NB, Holdsworth LD. The effects at different levels of water deficit on physiological responses during heat stress. Int Z Angew Physiol 1968; 26: 95-102
98. 98. Sawka MN, Toner MM, Francesconi RP, et al. Hypohydration and exercise: effects of heat acclimation, gender, and environment. J Appl Physiol 1983; 55: 1147-53
99. 99. Cheung SS, McLellan TM. Influence of hydration status and fluid replacement on tolerance during uncompensable heat stress. Eur J Appl Physiol 1998; 77: 139-48
100. 100. Cheung SS, McLellan TM. Influence of heat acclimation, aerobic fitness, and hydration effects on tolerance during uncompensable heat stress. J Appl Physiol 1998; 84: 1731-9
101. 101. Cheung SS, McLellan TM. Influence of hydration status and short-term aerobic training on tolerance during uncompensable heat stress. Eur J Appl Physiol 1998; 78: 50-8
102. 102. Montain SJ, Coyle EF. Influence of graded dehydration on hyperthermia and cardiovascular drift during exercise. J Appl Physiol 1992; 73: 1340-50
103. 103. Murray R. The effects of consuming carbohydrate-electrolyte beverages on gastric emptying and fluid absorption during and following exercise. Sports Med 1987; 4: 322-51
104. 104. Mitchell JB, Voss KW. The influence of volume on gastric emptying and fluid balance during prolonged exercise. Med Sci Sports Exerc 1991; 23: 314-9
105. 105. Neufer PD, Young AJ, Sawka MN. Gastric emptying during walking and running: effects of varied exercise intensity. Eur J Appl Physiol 1989; 58: 440-5
106. 106. Fordtran JS, Saltin B. Gastric emptying and intestinal absorption during prolonged severe exercise. J Appl Physiol 1967; 23: 331-5
107. 107. Neufer PD, Young AJ, Sawka MN. Gastric emptying during exercise: effects of heat stress and hypohydration. Eur J Appl Physiol 1989; 58: 433-9
108. 108. Rico-Sanz J, Frontera WR, Rivera MA, et al. Effects of hyperhydration on total body water, temperature regulation and performance of elite young soccer players in a warm climate. Int J Sports Med 1996; 17: 85-91
109. 109. Kristal-Boneh E, Glusman JG, Shitrit R, et al. Physical performance and heat tolerance after chronic water loading and heat acclimation. Aviat Space Environ Med 1995; 66: 733-8
110. 110. Kristal-Boneh E, Glusman JG, Chaemovitz C, et al. Can chronic, forced water loading replace heat-acclimatization? In: Mercer JB, editor. Thermal physiology 1989. Amsterdam: Elsevier Science Publishers B.V., 1989: 575-80
111. 111. Freund BJ, Montain SJ, Young AJ, et al. Glycerol hyperhydration: hormonal, renal, and vascular fluid responses. J Appl Physiol 1995; 79: 2069-77
112. 112. Latzka WA, Sawka MN, Montain SJ, et al. Hyperhydration: thermoregulatory effects during compensable exercise-heat stress. J Appl Physiol 1997; 83: 860-6
113. 113. Montner P, Stark DM, Riedesel ML, et al. Pre-exercise glycerol hydration improves cycling endurance time. Int J Sports Med 1996; 17: 27-33
114. 114. Riedesel ML, Allen DY, Peake GT, et al. Hyperhydration with glycerol solutions. J Appl Physiol 1987; 63: 2262-8
115. 115. Murray R, Eddy DE, Paul GL, et al. Physiological responses to glycerol ingestion during exercise. J Appl Physiol 1991; 71: 144-9
116. 116. Kark JA, Burr PQ, Wenger CB, et al. Exertional heat illness in Marine Corps recruit training. Aviat Space Environ Med 1996; 67: 354-60
117. 117. Armstrong LE, Maresh CM. The induction and decay of heat acclimatisation in trained athletes. Sports Med 1991; 12: 302-12
118. 118. Senay LC, Mitchell D, Wyndham CH. Acclimatization in a hot, humid environment: body fluid adjustments. J Appl Physiol 1976; 40: 786-96
119. 119. Pandolf KB, Burse RL, Goldman RF. Role of physical fitness in heat acclimatization, decay and reinduction. Ergonomics 1977; 20: 399-408
120. 120. Garden JW, Wilson ID, Rasch PJ. Acclimatization of healthy young adult males to a hot-wet environment. J Appl Physiol 1966; 21: 665-9
121. 121. Barnett A, Maughan RJ. Response of unacclimatized males to repeated weekly bouts of exercise in the heat. Br J Sports Med 1993; 27: 39-44
122. 122. Roberts ME, Wenger CB, Stolwijk JAJ, et al. Skin blood flow and sweating changes following exercise training and heat acclimation. J Appl Physiol 1977; 43: 133-7
123. 123. Chen WY, Elizondo RS. Peripheral modification of thermoregulatory function during heat acclimation. J Appl Physiol 1974; 37: 367-73
124. 124. Sato F, Owen M, Matthes R, et al. Functional and morphological changes in the eccrine sweat gland with heat acclimation. J Appl Physiol 1990; 232-6
125. 125. Dill DB, Hall FG, Edwards HT. Changes in composition of sweat during acclimatization to heat. Am J Physiol 1938; 123: 412-9
126. 126. Nose H, Mack GW, Shi X, et al. Shift in body fluid compartments after dehydration in humans. J Appl Physiol 1988; 65: 318-24
127. 127. Allan JR, Wilson CG. Influence of acclimatization on sweat sodium concentration. J Appl Physiol 1971; 30: 708-12
128. 128. Aoyagi Y, McLellan TM, Shephard RJ. Effects of 6 versus 12 days of heat acclimation on heat tolerance in lightly exercising men wearing protective clothing. Eur J Appl Physiol 1995; 71: 187-96
129. 129. McLellan TM, Aoyagi Y. Heat stain in protective clothing following hot-wet or hot-dry heat acclimation. Can J Appl Physiol 1996; 21: 90-108
130. 130. Millard CE, Spilsbury PM, Withey WR. The effects of heat acclimation on the heat strain of working in protective clothing. 6th International Conference on Environmental Ergonomics; 1994 Sep 25-30; Montebello, 80-1
131. 131. Dawson BT. Exercise training in sweat clothing in cool conditions to improve heat tolerance. Sports Med 1994; 17: 233-44
132. 132. Shvartz E, Benor D. Heat acclimatization to severe dry heat by brief exposures to humid heat. Aerosp Med 1971; 42: 879-81
133. 133. Shvartz E, Benor D, Saar E. Acclimatization to severe dry heat by brief exposures to humid heat. Ergonomics 1972; 15: 563-71
134. 134. Shvartz E, Saar E, Meyerstein N, et al. Heat acclimatization while wearing vapor-barrier clothing. Aerosp Med 1973; 44: 609-12
135. 135. Adolph EF. Life in deserts. In: Adolph EF and Associates, editors. Physiology of man in the desert. New York (NY): Interscience Publishers Inc., 1947: 326-41
136. 136. Robinson S. Laboratory and field trials: tropics. In: Newburgh LH, editor. Physiology of heat regulation and the science of clothing. Philadelphia (PA): WB Saunders Co., 1949: 338-51
137. 137. Fox RH, Goldsmith R, Hampton IFG, et al. Heat acclimatization by controlled hyperthermia in hot-dry and hot-wet climates. J Appl Physiol 1967; 22: 39-46
138. 138. Shvartz E, Saar E, Meyerstein N, et al. A comparison of three methods of acclimatization to dry heat. J Appl Physiol 1973; 34: 214-9
139. 139. Griefahn B. Acclimation to three different hot climates with equivalent globe temperatures. Ergonomics 1997; 40: 223-34
140. 140. Candas V, Libert JP, Vogt JJ. Effect of hidromeiosis on sweat drippage during acclimation to humid heat. Eur J Appl Physiol 1980; 44: 123-33
141. 141. Candas V, Liebert JP, Vogt JJ. Influence of air velocity and heat acclimation on human skin wettedness and sweating efficiency. J Appl Physiol 1979; 47: 1194-200
142. 142. Gonzalez RR, Pandolf KB, Gagge AP. Heat acclimation and decline in sweating during humidity transients. J Appl Physiol 1974; 36: 419-25
143. 143. Goldman RF, Green EB, Iampietro PF. Tolerance of hot, wet environments by resting men. J Appl Physiol 1965; 20: 271-7
144. 144. Robinson S, Turrell ES, Belding HS, et al. Rapid acclimatization to work in hot climates. Am J Physiol 1943; 140: 168-76
145. 145. Bean WB, Eichna LW. Performance in relation to environmental temperature: reactions of normal young men to simulated desert environment. Fed Proc 1943; 2: 144-58
146. 146. Piwonka RW, Robinson S, Gay VL, et al. Acclimatization of men to heat by training. J Appl Physiol 1965; 20: 379-84
147. 147. Havenith G, van Middendorp H. The relative influence of physical fitness, acclimation state, anthropometric measures and gender on individual reactions to heat stress. Eur J Appl Physiol 1990; 61: 419-27
148. 148. Shvartz E, Shapiro Y, Magazanik A, et al. Heat acclimation, physical fitness, and responses to exercise in temperature and hot environment. J Appl Physiol 1977; 43: 678-83
149. 149. Cadarette BS, Sawka MN, Toner MM, et al. Aerobic fitness and the hypohydration response to exercise-heat stress. Aviat Space Environ Med 1984; 55: 507-12
150. 150. Havenith G, Luttikholt VGM, Vrijkotte TGM. The relative influence of body characteristics on humid heat stress response. Eur J Appl Physiol 1995; 70: 270-9
151. 151. Henane R, Flandrois R, Charbonnier JP. Increase in sweating sensitivity by endurance conditioning in man. J Appl Physiol 1977; 43: 822-8
152. 152. Avellini BA, Shapiro Y, Fortney SM, et al. Effects on heat tolerance of physical training in water and on land. J Appl Physiol 1982; 53: 1291-8
153. 153. Pandolf KB, Cadarette BS, Sawka MN, et al. Thermoregulatory responses of middle-aged men and young men during dryheat acclimation. J Appl Physiol 1988; 65: 65-71
154. 154. Smolander J, Ilmarinen R, Korhonen O, et al. Circulatory and thermal responses of men with different training status to prolonged physical work in dry and humid heat. Scand J Work Environ Health 1987; 13: 37-46
155. 155. Astrand PO, Rhyming I. A nomogram for calculation of aerobic capacity (physical fitness) from pulse rate during submaximal work. J Appl Physiol 1954; 7: 218-20
156. 156. Saltin B, Hermansen L. Esophageal, rectal, and muscle temperature during exercise. J Appl Physiol 1966; 21: 1757-62
157. 157. Pandolf KB. Effects of physical training and cardiorespiratory physical fitness on exercise-heat tolerance: recent observations. Med Sci Sports Exerc 1979; 11: 60-5
158. 158. Gisolfi CV, Robinson S. Relations between physical training, acclimatization, and heat tolerance. J Appl Physiol 1969; 26: 530-4
159. 159. Gisolfi CV. Work-heat tolerance derived from interval training. J Appl Physiol 1973; 35: 349-54
160. 160. Strydom NB, Wyndham CH, Williams CG, et al. Acclimatization lo humid heat and the role of physical conditioning. J Appl Physiol 1966; 21: 636-42
161. 161. Strydom NB, Williams CG. Effect of physical conditioning on state of heat acclimatization of Bantu laborers. J Appl Physiol 1969; 27: 262-5
162. 162. Green HJ, Coates G, Sutton JR, et al. Early adaptations in gas exchange, cardiac function and haematology to prolonged exercise training in man. Eur J Appl Physiol 1991; 63: 17-23
163. 163. Houmard JA, Costill DL, Davis JA, et al. The influence of exercise intensity on heat acclimation in trained subjects. Med Sci Sports Exert 1990; 22: 615-20
164. 164. Fox RH, Goldsmith R, Kidd DJ, et al. Blood flow and other thermoregulatory adaptations with acclimation to heat. J Physiol (Lond) 1963; 166: 548-62
165. 165. Kondo N, Nishiyasu T, Nishiyasu M, et al. Differences in regional sweating responses during exercise between athletes trained on land and in water. Eur J Appl Physiol 1996; 74: 67-71
166. 166. Allan JR. The effects of physical training in a temperate and hot climate on the physiological responses to heat stress. Ergonomics 1965; 8: 445-53
167. 167. Cheung SS, McLellan TM. Comparison of short-term aerobic training and high maximal aerobic power on tolerance to uncompensable heat stress. Aviat Space Environ Med 1999; 70: 637-43
168. 168. Graettinger WR. The cardiovascular response to chronic physical exertion and exercise training: an echocardiographic review. Am Heart J 1984; 104: 1014-8
169. 169. Kjellberg SR, Rudhe U, Sjostrand T. Increase of the amount of hemoglobin and blood volume in connection with physical training. Acta Physiol Scand 1949; 19: 146-51
170. 170. Dill DB, Braithwaite K, Adams WC, et al. Blood volume of middle-distance runners: effect of 2,300 m altitude and comparison with non-athletes. Med Sci Sports Exerc 1974; 6: 1-7
171. 171. Maw GJ, MacKenzie IL, Comer DAM, et al. Whole-body hyperhydration in endurance-trained males determined using radionuclide dilution. Med Sci Sports Exerc 1996; 28: 1038-44
172. 172. Convertino VA. Blood volume: its adaptation to endurance training. Med Sci Sports Exerc 1991; 23: 1338-48
173. 173. Sawka MN, Young AJ, Pandolf KB, et al. Erythrocyte, plasma, and blood volume of healthy young men. Med Sci Sports Exerc 1992; 24: 447-53
174. 174. Convertino VA, Greenleaf JE, Bernauer EM. Role of thermal and exercise factors in the mechanism of hypervolemia. J Appl Physiol 1980; 48: 657-64
175. 175. Green HJ, Thomson JA, Ball ME, et al. Alterations in blood volume following short-term .supramaximal exercise. J Appl Physiol 1984; 56: 145-9
176. 176. Harrison MH. Effects of thermal stress and exercise on blood volume in humans. Physiol Rev 1985; 65: 149-208
177. 177. Havenith G. Individual parameters in thermoregulatory control: a review. IZF 1985-26. Soesterberg: Institute for Perception, 1985
178. 178. Kenney WL. A review of comparative responses of men and women to heat stress. Environ Res 1985; 37: 1-11
179. 179. Shvartz E, Saar E, Benor D. Physique and heat tolerance in hot-dry and hot-humid environments. J Appl Physiol 1973; 34: 799-803
180. 180. Buskirk ER, Lundegren H, Magnusson L. Heat acclimatization in obese and lean individuals. Ann N Y Acad Sci 1965; 131: 637-53
181. 181. Buskirk ER, Bar-Or O, Kollias J. Physiological effects of heat and cold. In: Wilson NL, editor. Obesity. Philadelphia (PA): Davis, 1969: 119-39
182. 182. Dill DB, Soholt LF, McLean DC, et al. Capacity of young males and females for running in desert heat. Med Sci Sports 1977; 9: 137-42
183. 183. Shapiro Y, Pandolf KB, Avellini BA, et al. Physiological responses of men and women to humid and dry heat. J Appl Physiol 1980; 49: 1-8
184. 184. Nunneley S. Physiological responses of women to thermal stress: a review. Med Sci Sports 1978; 10: 250-5
185. 185. McLellan TM. Sex-related differences in thermoregulatory responses while wearing protective clothing. Eur J Appl Physiol 1998; 78: 28-37
186. 186. Bittel J, Henane R. Comparison of thermal exchanges in men and women under neutral and hot conditions. J Physiol (Lond) 1975; 250: 475-89
187. 187. Fox RH, Lofstedt BE, Woodward PM, et al. Comparison of thermoregulatory functions in men and women. J Appl Physiol 1969; 26: 444-53
188. 188. Morimoto T, Slabochova Z, Naman RK, et al. Sex differences in physiological reactions to thermal stress. J Appl Physiol 1967; 22; 526-32
189. 189. Wyndham CH, Morrison JF, Williams CG. Heat reactions of male and female caucasians. J Appl Physiol 1965; 20: 357-64
190. 190. Avellini BA, Kamon E, Krajewski JT. Physiological responses of physically fit men and women to acclimation to humid heat. J Appl Physiol 1980; 49: 254-61
191. 191. Frascarolo P, Schutz Y, Jequier E. Decreased thermal conductance during the luteal phase of the menstrual cycle in women. J Appl Physiol 1990; 69: 2029-33
192. 192. Hessemer V, Bruck K. Influence of menstrual cycle on shivering, skin blood flow, and sweating responses measured at night. J Appl Physiol 1985; 59: 1902-10
193. 193. Hessemer V, Bruck K. Influence of menstrual cycle on thermoregulatory, metabolic, and heart rate responses to exercise at night. J Appl Physiol 1985; 59: 1911-7
194. 194. Horvath SM, Drinkwater BL. Thermoregulation and the menstrual cycle. Aviat Space Environ Med 1982; 53: 790-4
195. 195. Kolka MA, Stephenson LA. Control of sweating during the human menstrual cycle. Eur J Appl Physiol 1989; 58: 890-5
196. 196. Kolka MA, Stephenson LA, Gonzalez RR. Thermoregulation in women during uncompensable heat stress. J Therm Biol 1994; 19: 315-20
197. 197. Kolka MA, Stephenson LA. Interaction of menstrual cycle phase, clothing resistance and exercise on thermoregulation in women. J Therm Biol 1997; 22: 137-41
198. 198. Tenaglia SA, McLellan TM, Klentrou PP. Influence of menstrual cycle and oral contraceptive use during compensable and uncompensable heat stress. Eur J Appl Physiol 1999; 80: 76-83
199. 199. Gorski J. Exercise during pregnancy: maternal and fetal responses. A brief review. Med Sci Sports Exerc 1985; 17: 407-16
200. 200. Wolfe LA, Ohtake PJ, Mottola MF, et al. Physiological interactions between pregnancy and aerobic exercise. In: Pandolf KB, editor. Exercise and sport science reviews. Baltimore (MD): Williams and Wilkins, 1989; 17: 295-352
201. 201. Charkoudian N, Johnson JM. Modification of active cutaneous vasodilation by oral contraceptive hormones. J Appl Physiol 1997; 83: 2012-8
202. 202. Grucza R, Pekkarinen H, Titov E, et al. Influence of the menstrual cycle and oral contraceptives on thermoregulatory responses to exercise in young women. Eur J Appl Physiol 1993; 67: 279-85
203. 203. Grucza R, Pekkarinen H, Timonen K, et al. Physiological responses to cold in relation to the phase of the menstrual cycle and oral contraceptives. Ann N Y Acad Sci 1997; 813: 697-701
204. 204. Rogers SM, Baker MA. Thermoregulation during exercise in women who are taking oral contraceptives. Eur J Appl Physiol 1997; 75: 34-8
205. 205. Martin JG, Buono MJ. Oral contraceptives elevate core temperature and heart rate during exercise in the heat. Clin Physiol 1997; 17: 401-8
206. 206. Frye AJ, Kamon E. Responses to dry heat of men and women with similar aerobic capacities. J Appl Physiol 1981; 50: 65-70
207. 207. Bar-Or O, Lundegren HM, Buskirk ER. Heat tolerance of exercising obese and lean women. J Appl Physiol 1969; 26: 403-9
208. 208. Kakitshuba N, Mekjavic IB. Determining the rate of body heat storage by incorporating body composition. Aviat Space Environ Med 1987; 58: 301-7
209. 209. Krüuchi K, Wirz-Justice A. Circadian rhythm of heat production, heart rate, and skin and core temperature under unmasking conditions in men. Am J Physiol 1994; 267: R819-29
210. 210. McLellan TM, Cannon GA, Zamecnik J, et al. Low doses of melatonin and diurnal effects on thermoregulation and heat tolerance to uncompensable heat stress. J Appl Physiol 1999; 87: 308-16
211. 211. Stephenson LA, Wenger CB, O'Donovan BH, et al. Circadian rhythm in sweating and cutaneous blood flow. Am J Physiol 1984; 246: R321-4
212. 212. Gonzalez-Alonso J, Teller C, Andersen SL, et al. Influence of body temperature on the development of fatigue during prolonged exercise in the heat. J Appl Physiol 1999; 86: 1032-9
213. 213. Pandolf KB. Aging and human heat tolerance. Exp Aging Res 1995; 23: 69-105
214. 214. Kenney WL. Thermoregulation at rest and during exercise in healthy older adults. Exerc Sport Sci Rev 1997; 25: 41-76