Ollie Jay

Summary

Affiliation: University of Ottawa
Country: Canada

Publications

  1. doi request reprint Influence of adiposity on cooling efficiency in hyperthermic individuals
    Bruno Lemire
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, 125 University, Ottawa, Ontario, Canada
    Eur J Appl Physiol 104:67-74. 2008
  2. doi request reprint Estimating changes in volume-weighted mean body temperature using thermometry with an individualized correction factor
    Ollie Jay
    Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 299:R387-94. 2010
  3. doi request reprint Heat exposure in the Canadian workplace
    Ollie Jay
    School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Am J Ind Med 53:842-53. 2010
  4. doi request reprint Large differences in peak oxygen uptake do not independently alter changes in core temperature and sweating during exercise
    Ollie Jay
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, Ontario Canada
    Am J Physiol Regul Integr Comp Physiol 301:R832-41. 2011
  5. ncbi request reprint A three-compartment thermometry model for the improved estimation of changes in body heat content
    Ollie Jay
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 292:R167-75. 2007
  6. ncbi request reprint Differences in finger skin contact cooling response between an arterial occlusion and a vasodilated condition
    Ollie Jay
    Department of Human Sciences, Environmental Ergonomics Research Centre, Loughborough University, Leicestershire, United Kingdom
    J Appl Physiol (1985) 100:1596-601. 2006
  7. doi request reprint Can supine recovery mitigate the exercise intensity dependent attenuation of post-exercise heat loss responses?
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
    Appl Physiol Nutr Metab 33:682-9. 2008
  8. doi request reprint A comparison between the technical absorbent and ventilated capsule methods for measuring local sweat rate
    Nathan B Morris
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ontario, Canada
    J Appl Physiol (1985) 114:816-23. 2013
  9. doi request reprint Menstrual cycle and oral contraceptive use do not modify postexercise heat loss responses
    Glen P Kenny
    University of Ottawa, School of Human Kinetics, 125 University, Ottawa, Ontario, Canada
    J Appl Physiol (1985) 105:1156-65. 2008
  10. doi request reprint Heat balance and cumulative heat storage during intermittent bouts of exercise
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 41:588-96. 2009

Collaborators

Detail Information

Publications43

  1. doi request reprint Influence of adiposity on cooling efficiency in hyperthermic individuals
    Bruno Lemire
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, 125 University, Ottawa, Ontario, Canada
    Eur J Appl Physiol 104:67-74. 2008
    ..239) was not different between groups. These results suggest that a difference of approximately 10% of body adiposity does not affect core cooling rates in active individuals under 25% body fat rendered hyperthermic by exercise...
  2. doi request reprint Estimating changes in volume-weighted mean body temperature using thermometry with an individualized correction factor
    Ollie Jay
    Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 299:R387-94. 2010
    ..66/0.34 describing 74%, 84%, and 82% of the variation observed in DeltaT(b) from calorimetry after 30, 60, and 90 min, respectively...
  3. doi request reprint Heat exposure in the Canadian workplace
    Ollie Jay
    School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Am J Ind Med 53:842-53. 2010
    ..Work is on-going, particularly in the European Union to develop an improved individualized heat stress risk assessment tool. More work is required to improve the predictive capacity of these indices...
  4. doi request reprint Large differences in peak oxygen uptake do not independently alter changes in core temperature and sweating during exercise
    Ollie Jay
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, Ontario Canada
    Am J Physiol Regul Integr Comp Physiol 301:R832-41. 2011
    ..22) and REL (P = 0.77) trials. In conclusion, changes in core temperature and sweating during exercise in a neutral climate are determined by H(prod), mass, and BSA, not Vo(₂ peak)...
  5. ncbi request reprint A three-compartment thermometry model for the improved estimation of changes in body heat content
    Ollie Jay
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 292:R167-75. 2007
    ..It is concluded that a major source of error in the estimation of DeltaH(b) using the traditional two-compartment thermometry model is the lack of an expression independently representing the heat storage in muscle during exercise...
  6. ncbi request reprint Differences in finger skin contact cooling response between an arterial occlusion and a vasodilated condition
    Ollie Jay
    Department of Human Sciences, Environmental Ergonomics Research Centre, Loughborough University, Leicestershire, United Kingdom
    J Appl Physiol (1985) 100:1596-601. 2006
    ..5 N), circulating blood provides a heat input source that significantly affects finger skin contact cooling during a vasodilated state...
  7. doi request reprint Can supine recovery mitigate the exercise intensity dependent attenuation of post-exercise heat loss responses?
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
    Appl Physiol Nutr Metab 33:682-9. 2008
    ..Supine recovery attenuates the post-exercise reductions in MAP, CVC, and sweat rate in a manner dependent directly on exercise intensity. This effect is likely attributable to a non-thermal baroreceptor mechanism...
  8. doi request reprint A comparison between the technical absorbent and ventilated capsule methods for measuring local sweat rate
    Nathan B Morris
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ontario, Canada
    J Appl Physiol (1985) 114:816-23. 2013
    ..12 and 0.05 mg · min(-1) · cm(-2) for TA and VC methods, respectively. These data support the TA method as a reliable alternative for measuring the rate of sweat appearance on the skin surface...
  9. doi request reprint Menstrual cycle and oral contraceptive use do not modify postexercise heat loss responses
    Glen P Kenny
    University of Ottawa, School of Human Kinetics, 125 University, Ottawa, Ontario, Canada
    J Appl Physiol (1985) 105:1156-65. 2008
    ..No effect of OC use was observed. We conclude that neither menstrual cycle nor OC use modifies the magnitude of the postexercise elevation in Th(vd) and Th(sw)...
  10. doi request reprint Heat balance and cumulative heat storage during intermittent bouts of exercise
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 41:588-96. 2009
    ..Whole-body heat loss (H x L) and changes in body heat content (Delta Hb) were measured using simultaneous direct whole-body and indirect calorimetry...
  11. pmc Aural canal, esophageal, and rectal temperatures during exertional heat stress and the subsequent recovery period
    Daniel Gagnon
    School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
    J Athl Train 45:157-63. 2010
    ..However, little information is available about how different measurements of body temperature respond during and after exertional heat stress...
  12. doi request reprint Human heat balance during postexercise recovery: separating metabolic and nonthermal effects
    Ollie Jay
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
    Am J Physiol Regul Integr Comp Physiol 294:R1586-92. 2008
    ..Evidence for nonthermal influences upon heat loss responses must therefore be sought after accounting for differences in heat production...
  13. ncbi request reprint Postexercise heat loss and hemodynamic responses during head-down tilt are similar between genders
    W Shane Journeay
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada
    Med Sci Sports Exerc 39:1308-14. 2007
    ....
  14. ncbi request reprint Sex differences in postexercise esophageal and muscle tissue temperature response
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 292:R1632-40. 2007
    ....
  15. ncbi request reprint Estimating changes in mean body temperature for humans during exercise using core and skin temperatures is inaccurate even with a correction factor
    Ollie Jay
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
    J Appl Physiol 103:443-51. 2007
    ....
  16. doi request reprint Heat balance and cumulative heat storage during exercise performed in the heat in physically active younger and middle-aged men
    Glen P Kenny
    Human and Environmental Physiology Research Unit, Faculty of Health Sciences, School of Human Kinetics, University of Ottawa, 125 University, Ottawa, Ontario, Canada
    Eur J Appl Physiol 109:81-92. 2010
    ..24 +/- 0.14 degrees C for W and 0.33 +/- 0.21 and 0.33 +/- 0.13 degrees C for H). We conclude that highly trained middle-aged men demonstrate a similar capacity for heat dissipation when compared with physically active younger men...
  17. doi request reprint Sex-related differences in evaporative heat loss: the importance of metabolic heat production
    Daniel Gagnon
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, 125 University, Montpetit Hall, Ottawa, ON K1N 6N5, Canada
    Eur J Appl Physiol 104:821-9. 2008
    ..To compare thermoregulatory function between sexes, differences in metabolic heat production must therefore be accounted for...
  18. doi request reprint Sweating is greater in NCAA football linemen independently of heat production
    Tomasz M Deren
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 44:244-52. 2012
    ..The study's purpose was to investigate whether differences in local sweat rates on the upper body between American football linemen (L) and backs (B) exist independently of differences in metabolic heat production...
  19. ncbi request reprint Skin cooling on contact with cold materials: the effect of blood flow during short-term exposures
    Ollie Jay
    Human Thermal Environments Laboratory, Department of Human Sciences, Loughborough University, Leicestershire LE11 3TU, UK
    Ann Occup Hyg 48:129-37. 2004
    ..Further protocol improvements are also recommended...
  20. doi request reprint Core temperature differences between males and females during intermittent exercise: physical considerations
    Daniel Gagnon
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, 125 University PVT, Ottawa, ON, Canada
    Eur J Appl Physiol 105:453-61. 2009
    ..97 +/- 0.26 degrees C, p <OR= 0.05). Differences in core temperature between sexes appear to be solely related to differences in physical characteristics, and not due to concurrent differences in whole-body thermoregulatory responses...
  21. ncbi request reprint 15 degrees head-down tilt attenuates the postexercise reduction in cutaneous vascular conductance and sweating and decreases esophageal temperature recovery time
    Natalie H McInnis
    Laboratory of Human Bioenergetics and Environmental Physiology, University of Ottawa, School of Human Kinetics, Ottawa, Ontario, Canada K1N 6N5
    J Appl Physiol 101:840-7. 2006
    ..In conclusion, extended recovery from dynamic exercise in the 15 degrees HDT position attenuates the reduction in CVC and sweating, thereby significantly increasing the rate of T(es) decay compared with recovery in the URS posture...
  22. ncbi request reprint Describing individual variation in local sweating during exercise in a temperate environment
    Anthony R Bain
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, 200 Lees Avenue, Ottawa, ON, K1N 6N5, Canada
    Eur J Appl Physiol 111:1599-607. 2011
    ..79, P = 0.002) and LSR(arm) (r = 0.89, P < 0.001) correlated with WBSR(ss). In conclusion, the individual variation in WBSR(ss), LSR(head) and LSR(arm) is described by the ratio of E (req) relative to E (max)...
  23. doi request reprint Hyperthermia modifies the nonthermal contribution to postexercise heat loss responses
    Daniel Gagnon
    School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 40:513-22. 2008
    ....
  24. doi request reprint Does summer in a humid continental climate elicit an acclimatization of human thermoregulatory responses?
    Anthony R Bain
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, 200 Lees Avenue, Ottawa, ON, K1N 6N5, Canada
    Eur J Appl Physiol 111:1197-205. 2011
    ..The apparent lack of heat acclimatization could be due to frequent air-conditioning use and an avoidance of outdoor activity during the hottest times of day but may also be due to a lack of environmental stimulus...
  25. ncbi request reprint Disturbance of thermal homeostasis following dynamic exercise
    Glen P Kenny
    Laboratory for Human Bioenergetics and Environmental Physiology, Faculty of Health Sciences, School of Human Kinetics, 125 University Ave, Montpetit Hall, University of Ottawa, Ottawa, ON K1N 6N5, Canada
    Appl Physiol Nutr Metab 32:818-31. 2007
    ..The following review will examine the etiology of the post-exercise disturbance in thermal homeostasis and evaluate possible thermal and nonthermal factors associated with a prolonged hyperthermic state following exercise...
  26. pmc The evaporative requirement for heat balance determines whole-body sweat rate during exercise under conditions permitting full evaporation
    Daniel Gagnon
    University of Ottawa, School of Human Kinetics, 125 University, room 367 Montpetit Hall, Ottawa, Ontario, Canada, K1N 6N5
    J Physiol 591:2925-35. 2013
    ..Future studies should therefore use an experimental protocol which ensures a fixed Ereq when examining absolute WBSR between individuals, irrespective of potential differences in relative exercise intensity...
  27. doi request reprint Differences between sexes in rectal cooling rates after exercise-induced hyperthermia
    Bruno B Lemire
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 41:1633-9. 2009
    ..We evaluated differences between sexes in core cooling rates during cold water immersion after exercise-induced hyperthermia...
  28. doi request reprint Calorimetric measurement of postexercise net heat loss and residual body heat storage
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 40:1629-36. 2008
    ..Whole-body evaporative (H(E)) and dry (H(D)) heat loss as well as changes in body heat content (DeltaH(b)) were measured using simultaneous direct whole-body and indirect calorimetry...
  29. ncbi request reprint Evidence of a greater onset threshold for sweating in females following intense exercise
    Glen P Kenny
    Laboratory of Human Bioenergetics and Environmental Physiology, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, 125 University, Montpetit Hall, Room 367, PO Box 450 Station A, Ottawa, ON, Canada
    Eur J Appl Physiol 101:487-93. 2007
    ..05). In conclusion, females demonstrate a greater postexercise onset threshold for sweating, which is paralleled by a greater postexercise hypotensive response following intense exercise...
  30. doi request reprint Local sweating on the forehead, but not forearm, is influenced by aerobic fitness independently of heat balance requirements during exercise
    Matthew N Cramer
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
    Exp Physiol 97:572-82. 2012
    ....
  31. ncbi request reprint Postexercise hypotension causes a prolonged perturbation in esophageal and active muscle temperature recovery
    Glen P Kenny
    Faculty of Health Sciences, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 291:R580-8. 2006
    ....
  32. ncbi request reprint Finger skin cooling on contact with cold materials: a comparison between male and female responses during short-term exposures
    Ollie Jay
    Human Thermal Environments Laboratory, Department of Human Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
    Eur J Appl Physiol 91:373-81. 2004
    ..This study showed females to be at a higher risk during contact with cold objects...
  33. ncbi request reprint Maximum heat loss potential is lower in football linemen during an NCAA summer training camp because of lower self-generated air flow
    Tomasz M Deren
    1Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, CANADA 2Division of Sports Medicine, Department of Athletics, University of South Florida College of Medicine, Bayfront Medical Center, Tampa, Florida 3Korey Stringer Institute, Department of Kinesiology, Neag School of Education, University of Connecticut, Storrs, Connecticut and 4Exercise and Sport Science, University of Sydney, Lidcombe, New South Wales, Australia
    J Strength Cond Res 28:1656-63. 2014
    ..e., mechanical fans) should specifically target L, particularly while they are participating in static on-field drills and during rest intervals...
  34. doi request reprint The effect of exercise training on resting metabolic rate in type 2 diabetes mellitus
    Alison E Jennings
    Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
    Med Sci Sports Exerc 41:1558-65. 2009
    ....
  35. ncbi request reprint Evidence that transient changes in sudomotor output with cold and warm fluid ingestion are independently modulated by abdominal, but not oral thermoreceptors
    Nathan B Morris
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    J Appl Physiol (1985) 116:1088-95. 2014
    ....
  36. doi request reprint Compensatory hyperhidrosis following thoracic sympathectomy: a biophysical rationale
    Matthew N Cramer
    Thermal Ergonomics Laboratory, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 302:R352-6. 2012
    ....
  37. doi request reprint Physical work capacity in older adults: implications for the aging worker
    Glen P Kenny
    Center for Human and Environmental Physiology Research, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
    Am J Ind Med 51:610-25. 2008
    ..The purpose of this review is to examine the physiological adaptations to aging, the impact of aging on performance and the benefits of physical fitness in improving functional work capacity in aging individuals...
  38. ncbi request reprint Selecting the correct exercise intensity for unbiased comparisons of thermoregulatory responses between groups of different mass and surface area
    Matthew N Cramer
    Thermal Ergonomics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, Canada
    J Appl Physiol (1985) 116:1123-32. 2014
    ..902). In conclusion, when comparing groups unmatched for mass and BSA, future experiments can avoid systematic differences in ΔTre and LSR by using a fixed prod in Watts per kilogram and Ereq in Watts per square meter, respectively. ..
  39. doi request reprint Thermometry, calorimetry, and mean body temperature during heat stress
    Glen P Kenny
    Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
    Compr Physiol 3:1689-719. 2013
    ..Further, we evaluate the physiological responses associated with heat stress and discuss the thermal and nonthermal influences on the body's ability to dissipate heat from a heat balance perspective...
  40. ncbi request reprint Human face-only immersion in cold water reduces maximal apnoeic times and stimulates ventilation
    Ollie Jay
    Laboratory for Exercise and Environmental Physiology, 8888 University Drive, School of Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
    Exp Physiol 92:197-206. 2007
    ....
  41. ncbi request reprint The combined effects of local contact force and lower arm cooling upon cutaneous blood cell velocity of the fingertip
    Ollie Jay
    Laboratory for Exercise and Environmental Physiology, School of Kinesiology, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada, V5A 1S6
    Eur J Appl Physiol 97:332-9. 2006
    ..Although decay constants became progressively greater at lower water temperature conditions, a cooler hand also had a lower initial and subsequently smaller decrements in CBV with increases of FCF...
  42. ncbi request reprint The effects of hyperthermia and hypoxia on ventilation during low-intensity steady-state exercise
    Aaron L Chu
    School of Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
    Am J Physiol Regul Integr Comp Physiol 292:R195-203. 2007
    ....
  43. ncbi request reprint Maximum effort breath-hold times for males and females of similar pulmonary capacities during sudden face-only immersion at water temperatures from 0 to 33 degrees C
    Ollie Jay
    Laboratory for Exercise and Environmental Physiology, School of Kinesiology, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
    Appl Physiol Nutr Metab 31:549-56. 2006
    ....