Ollie Jay

Dr. Ollie Jay

Biography

Ollie Jay is an Associate Professor in the field of exercise and environmental physiology at the School of Human Kinetics at the University of Ottawa, ON, Canada. He received his Ph.D. in Ergonomics (thermal physiology) from Loughborough University, UK in 2002. His thesis focused on assisting the development of the European Union working standard ISO/DIS 13732-3) that determines exposure limits for workers operating in cold environments. Following his doctorate, he accumulated five years of postdoctoral experience at Simon Fraser University, BC (2003-2005) and the University of Ottawa, ON (2005-2008). During this time he worked on a range of research projects including the control of ventilation during cold stress, heat stress and hypoxia; and the validation of thermometric models for the estimation of heat storage during exercise.

In 2009, he established the Thermal Ergonomics Laboratory based out of the Lees Avenue campus. His research focuses on human physiology and performance in hot and cold environments. To date, Ollie has published 51 articles in peer-reviewed journals, and presently holds a 5-year NSERC Discovery Grant and a NSERC Research Tools and Instruments Grant. He was a co-recipient of an NFL Charities Medical Research Grant in 2009-10 and a Canada Foundation for Innovation (CFI) Research Infrastructure Grant in 2009. In addition, he has been awarded funding by the Workplace Safety and Insurance Board of Ontario (WSIB) and the U.S. National Academy of Sciences.

Ollie is presently Chair of the American College of Sports Medicine (ACSM) Environmental Physiology interest group and a member of American Physiological Society and ACSM, and is an active peer-reviewer for prestigious journals such as Journal of Applied Physiology, Medicine and Science in Sports and Exercise, Journal of Physiology (London), Experimental Physiology and European Journal of Applied Physiology. He is also a member the International Standards Organization (ISO) "Physical Environment" sub-committee (ISO TC 159 SC5) that contributes to standards production concerned with the effects of heat and cold, as well as in the area of clothing insulation, metabolic rate and thermal comfort. In 2011, Ollie received the University of Ottawa, Faculty of Health Sciences, Young Researcher of the Year Award.


University Degrees

Year Degree Specialty Institution
2005-2008 Postdoctoral Felow   School of Human Kinetics, University of Ottawa, ON
2003-2005 Postdoctoral Felow   School of Kinesiology, Simon Fraser University, BC
1998-2002 Ph.D. Thermal Physiology Department of Human Sciences, Loughborough University, UK
1994-1998 B.Sc. (Hons) Ergonomics Department of Human Sciences, Loughborough University, UK


Research Interests

  • Heat stress and sports/work performance
  • Thermoregulatory sweating and fluid requirements for athletes/workers
  • Biothermal modeling
  • Pediatric temperature regulation
  • Hypoxia and Hypo/Hyperbaria physiology

Publications

Research Contributions

Journal Articles
KEY: Asterisk (*) denotes PI; Underlined Italics denotes graduate students trained in the Thermal Ergonomics Laboratory

  1. Morris NB, Cramer MN, Hodder SG, Havenith G and Jay O* (2013) A comparison between the technical absorbent and ventilated capsule methods for measuring local sweat rate. J Appl Physiol; 114(6):816-23
  2. Molgat-Seon Y, Daboval T, Chou S and Jay O* (2013) Accidental overheating of a newborn under an infant radiant warmer: a lesson for future use. J Perinatol. 2013. In press. DOI:10.1038/jp.2013.32
  3. Gagnon D, Jay O and Kenny GP (2013) The evaporative requirement for heat balance determines whole-body sweat rate during exercise under conditions permitting full evaporation. J Physiol. [Epub ahead of print; Mar 4] DOI:10.1113/jphysiol.2012.248823.
  4. Bain AR, Lesperance NC and Jay O* (2012) Body heat storage during physical activity is lower with hot fluid ingestion under conditions permitting full evaporation. Acta Physiol (Oxf); 206(2):98-108. Highlighted by Invited Editorial: Barwood M (2012) Hot drinks all round. Acta Physiol (Oxf.);206(2):94-95
  5. Cramer MN, Morris NM and Jay O* (2012) Dissociating biophysical and training-related determinants of core temperature. Exerc Sport Sci Rev; 40(3):183
  6. Cramer MN, Bain AR and Jay O* (2012) Local sweating on the forehead, but not forearm, is influenced by aerobic fitness independently of heat balance requirements during exercise. Exp Physiol;97(5):572-82
  7. Deren TM, Coris EE, Bain AR, Walz S and Jay O* (2012) Sweating is greater in NCAA football linemen independently of heat production. Med Sci Sports Exerc;44(2):244-52
  8. Cramer MN and Jay O* (2012) Compensatory hyperhidrosis following thoracic sympathectomy: A biophysical rationale. Am J Physiol Regu Integr Comp Physiol;302(3):R352-6
  9. Jay O*, Bain AR, Deren TM, Sacheli M and Cramer MN (2011) Large differences in peak oxygen uptake do not alter the change in core temperature and thermoregulatory sweating during exercise. Am J Physiol Regu Integr Comp Physiol;301(3):R832-41.
  10. Bain AR, Deren TM and Jay O* (2011) Describing individual variation in whole-body and local sweating during exercise in a temperate environment. Eur J Appl Physiol;111(8):1599-607.
  11. Bain AR and Jay O*(2011) Does a humid continental climate elicit an acclimatization of human thermoregulatory responses? Eur J Appl Physiol;111(6):1197-205.
  12. Cramer MN and Jay O* (2011) Can thermal hyperpnea really cool the brain? J Appl Physiol;110(2):576.
  13. Jay O*, DuCharme MB, Webb P, Reardon FD and Kenny GP (2010) Estimating changes in volume-weighted mean body temperature using thermometry with an individualized correction factor. Am J Physiol Regu Integr Comp Physiol;299(2):R387-94.
  14. Jay O* and Kenny GP (2010) Heat exposure in the Canadian Workplace. Am J Ind Med ;53(8):842-53.
  15. Jay O* (2009) Heat balance considerations when estimating the rate of body heat storage. Int J Sports Med;30(4):307.
  16. Jay O* (2009) Last Word on Viewpoint: Current evidence does not support an anticipatory regulation of exercise intensity mediated by the rate of heat storage. J Appl Physiol; 107(2):635.
  17. Jay O*, Webb P. (2009) Improving the prediction of sweat losses during exercise. J Appl Physiol;107(2):374-6.
  18. Gagnon D, Lemire BB, Jay O and Kenny GP* (2010) Aural canal, esophageal, and rectal temperatures during exertional heat stress and the subsequent recovery period. J Athl Train ;45(2):157-63.
  19. Kenny GP*, Dorman L, Webb P, Ducharme MB, Gagnon D, Reardon FD, Hardcastle SG and Jay O (2010) Heat balance and cumulative heat storage during exercise performed in the heat in physically active younger and middle-aged men. Eur J Appl Physiol;109(1):81-92.
  20. Kenny GP*, Yardley J, Brown C, Sigal RJ and Jay O (2010) Heat stress in older individuals and patients with common chronic diseases. CMAJ; 182(10):1053-60.
  21. Jay O* and Kenny GP (2009) Viewpoint: Current evidence does not support an anticipatory regulation of exercise intensity mediated by rate of body heat storage. J Appl Physiol;107(2):630-31.
  22. Lemire BB, Gagnon D, Jay O and Kenny GP* (2009) Differences between sexes in rectal cooling rates after exercise-induced hyperthermia. Med Sci Sports Exerc;41(8):1633-1639.
  23. Kenny GP*, Dorman L, Webb P, Ducharme MB, Gagnon D, Reardon FD, Hardcastle SG and Jay O (2009) Heat balance and cumulative heat storage during intermittent bouts of exercise. Med Sci Sports Exerc;41(3):588-596.
  24. Gagnon D, Dorman LE, Jay O, Hardcastle S and Kenny GP* (2009) Core temperature differences between males and females during intermittent exercise: physical considerations. Eur J Appl Physiol;105(3):453-461.
  25. Jennings AE, Alberga A, Sigal RJ, Jay O, Boule NG and Kenny GP* (2009) The effect of exercise training on resting metabolic rate in type 2 diabetes mellitus. Med Sci Sports Exerc;41(8):1558-65.
  26. Gagnon D, Jay O, Lemire B and Kenny GP* (2008) Sex-related differences in evaporative heat loss: The importance of metabolic heat production. Eur J Appl Physiol;104(5):821-829.
  27. Kenny GP*, Leclair E, Sigal RJ, Journay WS, Kilby D, Nettlefold L, Reardon FD and Jay O (2008) Menstrual cycle and oral contraceptive use do not modify post-exercise heat loss responses. J Appl Physiol;105(4):1156-65.
  28. Kenny GP, Webb P, DuCharme MB, Reardon FD and Jay O* (2008) Calorimetric measurement of postexercise heat losses and residual body heat storage. Med Sci Spots Exerc ;40(9):1629-36.
  29. Lemire B, Gagnon D, Jay O, Dorman L, Ducharme MB and Kenny GP* (2008) Influence of adiposity on cooling efficiency in hyperthermic individuals. Eur J Appl Physiol ;104(1):67-74.
  30. Kenny GP*, Yardley JE, Martineau L and Jay O (2008) Physical work capacity in older adults: Implications for the ageing worker. Am J Ind Med ;51(8):610-25.
  31. Kenny GP*, Gagnon D, Jay O, McInnis NH, Journeay WS and Reardon FD (2008) Can supine recovery mitigate the exercise intensity dependent attenuation of post-exercise heat loss responses? Appl Physiol Nutr Metab;33(4):682-689.
  32. Jay O, Gagnon D, Reardon FD, Webb P. Ducharme MB and Kenny GP* (2008) Human heat balance during postexercise recovery: separating metabolic and nonthermal effects. Am J Physiol Regu Integr Comp Physiol;294(5):R1586-92.
  33. Gagnon D, Jay O, Reardon FD, Journeay WS and Kenny GP* (2008) Hyperthermia modifies the nonthermal contribution to postexercise heat loss responses. Med Sci Sports Exerc ;40(3):513-522.
  34. Jay O, Reardon FD, Webb P, Ducharme MB, Ramsay T, Nettlefold L and Kenny GP* (2007) Estimating changes in mean body temperature for humans during exercise using core and skin temperatures is inaccurate even with a correction factor. J Appl Physiol; 103(2):443-51. Highlighted by Invited Editorial: Sawka MN, Castellani JW (2007) How hot is the human body? J Appl Physiol;103(2):419-20
  35. Kenny GP* and Jay O (2007) Evidence of a greater onset threshold for sweating in females following intense exercise. Eur J Appl Physiol;101(4):487-93.
  36. Journeay WS, Jay O, McInnis NH, Leclair EE and Kenny GP* (2007) Heat loss responses to head-down tilt during recovery from dynamic exercise is not influenced by gender. Med Sci Sports Exerc;39(8):1308-14.
  37. Jay O* and Kenny GP (2007) The determination of changes in body heat content during exercise using calorimetry and thermometry – An invited review. J Hum Environ System;10(1):19-29.
  38. Kenny GP*, Jay O and Journeay WS (2007) Disturbance of thermal homeostasis following exercise – A review. Appl Physiol Nutr Metab;32(4):818-831.
  39. Kenny GP* and Jay O (2007) Sex differences in postexercise esophageal and muscle tissue temperature response. Am J Physiol Regu Integr Comp Physiol;292(4):R1632-1640.
  40. Jay O, Gariepy LM, Reardon FD, Webb P, Ducharme MB, Ramsay T and Kenny GP* (2007) A 3-compartment model for the improved estimation of changes in body heat content. Am J Physiol Regu Integr Comp Physiol;292(1):R167-175.
  41. Chu AL, Jay O and White MD* (2007) The effects of hyperthermia and hypoxia on ventilation during low intensity steady-state exercise. Am J Physiol Regu Integr Comp Physiol;292(1):R195-203.
  42. Jay O, Christensen JP and White MD* (2007) Face-only immersion in cold water reduces apnoeic time and stimulates ventilation. Exp Physiol; 92(1):197-206.
  43. Kenny GP*, Jay O, Zaleski W, Reardon ML, Sigal RJ, Journeay WS and Reardon FD (2006) Postexercise hypotension causes a prolonged perturbation in esophageal temperature and active muscle temperature recovery.  Am J Physiol Regu Integr Comp Physiol; 291(3):R580-R588.
  44. McInnis NH, Journeay WS, Jay O, Leclair EE and Kenny GP* (2006) 15º Head-down tilt attenuates the postexercise reduction in cutaneous vascular conductance and sweating and decreases esophageal temperature recovery time. J Appl Physiol; 101(3):840-847.
  45. Geng Q*, Holmer I, Hartog Den EA, Havenith G, Jay O, Malchaire J, Piette A, Rintamaki H and Rissanen S (2006) Temperature limit values for touching cold surfaces with the fingertip. Ann Occup Hyg; 50(8):851-862.
  46. Jay O and White MD* (2006) Maximum effort breath-hold times for males and females of similar pulmonary capacities during sudden face-only immersion at water temperatures from 0ºC to 33ºC. Appl Physiol Nutr Metab; 31(5):549-556.
  47. Jay O and White MD* (2006) The combined effects of local contact pressure and hand cooling upon cutaneous blood cell velocity of the fingertip. Eur J Appl Physiol; 97(3):332-339.
  48. Jay O and Havenith G* (2006) Differences in finger skin contact cooling response between an arterial occlusion and a vasodilated condition. J Appl Physiol; 100(5): 1596-1601.
  49. Jay O and Havenith G* (2004) Finger skin cooling on contact with cold materials: An investigation between male and female responses during short-term exposures with a view on hand and finger size. Eur J Appl Physiol; 93(1-2):1-8.
  50. Jay O and Havenith G* (2004) Finger skin cooling on contact with cold materials: A comparison between male and female responses during short-term exposures. Eur J Appl Physiol;91(4): 373-381.
  51. Jay O and Havenith G* (2004) Skin cooling on contact with cold materials: The effect of blood flow during short-term exposures. Ann Occup Hyg; 48(2): 129-137.

Papers in Published Proceedings
KEY: Bold with Asterisk (*) denotes PI; Underlined Italics denotes graduate students trained in the Thermal Ergonomics Laboratory

  1. Morris NB, Bain AR and Jay O* Thermoreceptors in the stomach region independently mediate transient sweating responses. 15th International Conference on Environmental Ergonomics, February 11-15, Queenstown, New Zealand.
  2. Cramer MN and Jay O* Heat production per unit mass, not relative exercise intensity, determines the core temperature response during exercise in compensable conditions. 15th International Conference on Environmental Ergonomics, February 11-15, Queenstown, New Zealand.
  3. Jay O* and Hodder SG. Electric fans: Should they be used during heat waves? 15th International Conference on Environmental Ergonomics, February 11-15, Queenstown, New Zealand.
  4. Deren TM, Coris EE, Casa DJ, DeMartini JK, Bain AR, Walz S and Jay O* (2012) Differences in self-generated convection and heat balance status in NCAA Linemen and Backs. American College of Sports Medicine Annual Meeting, May 29-June 2, San Francisco, CA, USA
  5. Jay O*, Lesperance NC and Bain AR (2012) Sudomotor activity and heat balance with serial cooling and heating of thermosensors in the esophagus and stomach. Experimental Biology Meeting, April 21-25, San Diego, CA, USA.
  6. Cramer MN, Molgat-Seon Y, Carlsen AN and Jay O* (2012) Rate of heat storage does not influence exercise intensity at a fixed rating of perceived exertion. Experimental Biology Meeting, April 21-25, San Diego, CA, USA.
  7. Molgat-Seon Y, Daboval T, Chou S and Jay O* (2012) Quantifying heat balance components in neonates nursed under radiant warmers in neonatal intensive care. Experimental Biology Meeting, April 21-25, San Diego, CA, USA.
  8. Imbeault M-A, Oneid P, Jay O, Worthylake D and Haman F* (2012) Effects of trainng modality on inter-individual variation in shivering pattern in humans. Experimental Biology Meeting, April 21-25, San Diego, CA, USA.
  9. Bain AR, Lesperance NC and Jay O* (2011) Sudomotor and vasomotor activity following serial cooling and heating of thermosensors in the esophagus and stomach. Canadian Society for Exercise Physiology (CSEP) 2011 Annual Conference, October 19-22, Quebec City, Canada
  10. Morris NB, Cramer MN, and Jay O* (2011). A comparison between two methods of measuring local sweat rate. Canadian Society for Exercise Physiology (CSEP) 2011 Annual Conference, October 19-22, Quebec City, Canada
  11. Jay O* (2011) Biophysical and physiological determinants of thermoregulatory sweating. 14th International Conference on Environmental Ergonomics, July 10-15, Nafplion, Greece (Symposium: Occupational Ergonomics)
  12. Jay O*, Bain AR, Deren TM and Cramer MN (2011) Evidence that heat production per unit mass, not relative exercise intensity determines changes in core temperature during exercise. 14th International Conference on Environmental Ergonomics, July 10-15, Nafplion, Greece
  13. Cramer MN, Bell C and Jay O* (2011) The influence of aerobic fitness on regional sweating during exercise in a temperate environment. 14th International Conference on Environmental Ergonomics, July 10-15, Nafplion, Greece
  14. Molgat-Seon Y, Chou S, Murto K and Jay O* (2011) Improving the non-invasive monitoring of core temperature infants. 14th International Conference on Environmental Ergonomics, July 10-15, Nafplion, Greece
  15. Bain AR, Lesperance NC and Jay O* (2011) The influence of drink temperature during exercise upon thermoregulatory sweating in a temperate environment. 14th International Conference on Environmental Ergonomics, July 10-15, Nafplion, Greece
  16. Jay O*, Bain AR, Deren TM and Sacheli M (2011) The influence of aerobic capacity on human thermoregulation in individuals matched for body morphology. Experimental Biology Meeting, April 9-13, Washington DC, USA.
  17. Deren TM, Coris EE, Bain AR, Walz S and Jay O* (2011) Regional sweating differs between elite American football linemen and backs independently of metabolic heat production. American College of Sports Medicine Annual Meeting, May 31-June 4, Denver, CO, USA.
  18. Jay O*, Chou S, Molgat-Seon Y and Murto K (2010) Improving the non-invasive monitoring of core temperature in infants. A Yamataka (Ed), 23rd International Symposium on Pediatric Surgical Research, Tokyo, Japan. pp. 100
  19. Jay O*, Reardon F, DuCharme M, Webb P, Kenny G (2008) Predicting individual correction factors for the improved thermometric estimation of changes in mean body temperature. MSSE, 40(5):S367.
  20. Lemire B, Gagnon D, Dorman L, Jay O, Kenny GP* (2008) Sex-related differences in cooling rates after exercise-induced hyperthermia. MSSE, 40(5):S336.
  21. Dorman L, Jay O, Gagnon D, Webb P, DuCharme MB, Reardon FD and Kenny GP* (2008) Sex differences in human heat balance at the same intermittent workloads. MSSE, 40(5):S336.
  22. Gagnon D, Jay O, Lemire B, Dorman L, Kenny GP* (2008) Sex-related differences in dynamic heat balance: metabolic heat production considerations. MSSE, 40(5):S336.
  23. Jay O*, Kenny GP (2008) Evaporative heat loss and changes in core temperature set-point during different absolute workloads - FASEB, 22:956.18.
  24. Jay O*, Webb P, DuCharme MB, Reardon FD, Ramsay T, Kenny GP (2007) Estimating changes in mean body temperature during exercise using thermometry. Environmental Ergonomics XII, pp.504.
  25. Gagnon D, Jay O, Kenny GP* (2007) Rates of total heat loss at two different rates of metabolic heat production. Environmental Ergonomics XII, pp.253.
  26. Mate J, Kenny GP, Beaulieu FD, Hardcastle S, Jay O and Reardon FD* (2007)Metabolic analysis of in-situ work performed in a Canadian deep mine. Environmental Ergonomics XII, pp. 598.
  27. LeClair E, Nettlefold L, Sigal RJ, Jay O and Kenny GP* (2007) Menstrual cycle does not affect postexercise sweating and skin blood flow. Environmental Ergonomics XII, pp. 297.
  28. Kenny GP*, Webb P, DuCharme MB, Reardon RD and Jay O (2007) Postexercise changes in body heat content measured using calorimetry. Environmental Ergonomics XII, pp. 254.
  29. Jay O, White MD* (2005) Maximal Breath-hold Time and Cardiovascular Responses During Sudden Cold-Water Face Immersion. Environmental Ergonomics XI, pp.235-8.
  30. Chu AL, Jay O, White MD* (2005) The interaction of hypoxia and core temperature on ventilation during sub-maximal exercise. – FASEB, 19(4):A643.
  31. Christensen JPH, Jay O, White MD* (2005) Cold shock response during sudden face only immersion at lower water temperatures. – FASEB, 19(5):A1285.
  32. Jay O and Havenith G* (2002) Skin Contact with Cold Materials: A comparison between the fingerpad responses of the dominant and non-dominant hand for short-term exposures. – Environmental Ergonomics X, Y Tochihara (Ed), 10th International Conference on Environmental Ergonomics, Fukuoka, Japan. pp. 259-262, ISBN 4 9901358 0 6
  33. Jay O and Havenith G*, Cold Surfaces Research Group (2000) Skin Contact with Cold Materials: A comparison between male and female responses to short term exposures. Environmental Ergonomics IX, J Werner, M Hexamer (Eds), Shaker Verlag, Aachen. 9th International Conference on Environmental Ergonomics, Dortmund, Germany. pp.185-188, ISBN 3 8265 7648 9
  34. Jay O, Bouskill L, Parsons KC, Withey WR* (1999) Clothing Ventilation: Human subjects and manikins. Contemporary Ergonomics 1999, MA Hanson, EJ Lovesey, SA Robertson (Eds), Taylor and Francis, London. 50th Ergonomics Society Annual Conference, Leicester, UK, pp.517-521, ISBN 0 7484 0872 X

Book chapters

  1. Jay O* (2011) Sweat. In: Encyclopedia of Exercise Medicine in Health and Disease, Mooren FC, Skinner JS (eds.) DOI: 10.1007/978-3-540-29807-6, Springer-Verlag, Berlin, Heidelberg.

Technical Reports

  1. Jay O* (2010) The effect of hat design on human thermoregulatory responses during simulated solar radiation. Health Canada, Ottawa, ON (September)
  2. Jay O* (2010) Modeling human heat balance during mechanical fan use. Health Canada, Ottawa, ON (August)
  3. Jay O* (2010) Thermoregulatory implications following bilateral thorascopic cervical-dorsal sympathectomy (T2-T4) Jonathan Bishop, Quebec City, QC (February)

Theses

  1. Jay O* (2002) Short-term fingertip contact with cold materials. Department of Human Sciences, Loughborough University, UK, PhD thesis.