T M McLellan

Summary

Affiliation: Defence Research and Development Canada
Country: Canada

Publications

  1. ncbi Heat stress while wearing long pants or shorts under firefighting protective clothing
    T M McLellan
    Operational Medicine Section, Defence R and D Canada Toronto, 1133 Sheppard Avenue West, Toronto, ON, M3M 3B9, Canada
    Ergonomics 47:75-90. 2004
  2. ncbi Chemical-biological protective clothing: effects of design and initial state on physiological strain
    Tom M McLellan
    Individual Readiness Section, DRDC Toronto, Toronto, Ontario, Canada
    Aviat Space Environ Med 79:500-8. 2008
  3. ncbi Caffeine improves physical performance during 24 h of active wakefulness
    Tom M McLellan
    Defence R and D Canada Toronto, Toronto, ON, Canada
    Aviat Space Environ Med 75:666-72. 2004
  4. ncbi Caffeine maintains vigilance and marksmanship in simulated urban operations with sleep deprivation
    Tom M McLellan
    Defence R and D Canada Toronto, 1133 Sheppard Avenue West, P O Box 2000, Toronto, Ontario, Canada M3M 3B9
    Aviat Space Environ Med 76:39-45. 2005
  5. ncbi Caffeine maintains vigilance and improves run times during night operations for Special Forces
    Tom M McLellan
    DRDC Toronto, Toronto, ON, Canada
    Aviat Space Environ Med 76:647-54. 2005
  6. ncbi Body temperature in sedentary adults during moderate exercise: no effect from exercise the day before
    T M McLellan
    Operational Medicine Section, Defence Research and Development Canada, Toronto, ON
    Aviat Space Environ Med 73:1167-75. 2002
  7. ncbi Caffeine effects on physical and cognitive performance during sustained operations
    Tom M McLellan
    Individual Readiness Section, DRDC Toronto, 1133 Sheppard Avenue West, PO Box 2000, Toronto, Ontario M3M 3B9, Canada
    Aviat Space Environ Med 78:871-7. 2007
  8. ncbi Hyperbaric stress in divers and non-divers: neuroendocrine and psychomotor responses
    Tom M McLellan
    Defence Research and Development Canada Toronto, Individual Readiness and Aerospace and Undersea Medicine Sections, Toronto, ON M3M 3B9, Canada
    Undersea Hyperb Med 37:219-31. 2010
  9. ncbi Active versus passive cooling during work in warm environments while wearing firefighting protective clothing
    G A Selkirk
    Operational Medicine Section Defence R and D Canada Toronto, Toronto, Ontario, Canada
    J Occup Environ Hyg 1:521-31. 2004
  10. ncbi Expression of intracellular cytokines, HSP72, and apoptosis in monocyte subsets during exertional heat stress in trained and untrained individuals
    G A Selkirk
    Defence R and D Canada Toronto, 1133 Sheppard Ave E, Toronto, ON, Canada M3M 3B9
    Am J Physiol Regul Integr Comp Physiol 296:R575-86. 2009

Detail Information

Publications30

  1. ncbi Heat stress while wearing long pants or shorts under firefighting protective clothing
    T M McLellan
    Operational Medicine Section, Defence R and D Canada Toronto, 1133 Sheppard Avenue West, Toronto, ON, M3M 3B9, Canada
    Ergonomics 47:75-90. 2004
    ..However, during heavier exercise where exposure times were less than 1 h replacing P with S was of little benefit...
  2. ncbi Chemical-biological protective clothing: effects of design and initial state on physiological strain
    Tom M McLellan
    Individual Readiness Section, DRDC Toronto, Toronto, Ontario, Canada
    Aviat Space Environ Med 79:500-8. 2008
    ....
  3. ncbi Caffeine improves physical performance during 24 h of active wakefulness
    Tom M McLellan
    Defence R and D Canada Toronto, Toronto, ON, Canada
    Aviat Space Environ Med 75:666-72. 2004
    ..It was the purpose of this study to examine the effects of caffeine on activities chosen to simulate the physical challenges that might occur during a military scenario involving a period of sleep loss...
  4. ncbi Caffeine maintains vigilance and marksmanship in simulated urban operations with sleep deprivation
    Tom M McLellan
    Defence R and D Canada Toronto, 1133 Sheppard Avenue West, P O Box 2000, Toronto, Ontario, Canada M3M 3B9
    Aviat Space Environ Med 76:39-45. 2005
    ..The purpose of this study was to examine the effects of caffeine (CAF) on physical, vigilance, and marksmanship tasks in soldiers during a sustained 55-h field exercise...
  5. ncbi Caffeine maintains vigilance and improves run times during night operations for Special Forces
    Tom M McLellan
    DRDC Toronto, Toronto, ON, Canada
    Aviat Space Environ Med 76:647-54. 2005
    ..This study examined the effects of caffeine (CAF) on vigilance, marksmanship, and run performance during 27 h of sustained wakefulness in Special Forces personnel...
  6. ncbi Body temperature in sedentary adults during moderate exercise: no effect from exercise the day before
    T M McLellan
    Operational Medicine Section, Defence Research and Development Canada, Toronto, ON
    Aviat Space Environ Med 73:1167-75. 2002
    ..Current guidelines do not consider the carry-over effects of prior exercise or exposure to high ambient temperatures on the risk of succumbing to heat illness...
  7. ncbi Caffeine effects on physical and cognitive performance during sustained operations
    Tom M McLellan
    Individual Readiness Section, DRDC Toronto, 1133 Sheppard Avenue West, PO Box 2000, Toronto, Ontario M3M 3B9, Canada
    Aviat Space Environ Med 78:871-7. 2007
    ..This study examined caffeine (CAF) effects on physical performance and vigilance during 4 d and 3 nights of sustained operations in Special Forces personnel...
  8. ncbi Hyperbaric stress in divers and non-divers: neuroendocrine and psychomotor responses
    Tom M McLellan
    Defence Research and Development Canada Toronto, Individual Readiness and Aerospace and Undersea Medicine Sections, Toronto, ON M3M 3B9, Canada
    Undersea Hyperb Med 37:219-31. 2010
    ..It was concluded that for the stress hormones measured, PRL may provide some indication of the adaptation involved with repeated hyperbaric stress, but its relationship to changes in reaction time was weak...
  9. ncbi Active versus passive cooling during work in warm environments while wearing firefighting protective clothing
    G A Selkirk
    Operational Medicine Section Defence R and D Canada Toronto, Toronto, Ontario, Canada
    J Occup Environ Hyg 1:521-31. 2004
    ..The current findings suggest that there is a definite advantage when utilizing forearm submersion compared with other methods of active or passive cooling while wearing FPC and SCBA in the heat...
  10. ncbi Expression of intracellular cytokines, HSP72, and apoptosis in monocyte subsets during exertional heat stress in trained and untrained individuals
    G A Selkirk
    Defence R and D Canada Toronto, 1133 Sheppard Ave E, Toronto, ON, Canada M3M 3B9
    Am J Physiol Regul Integr Comp Physiol 296:R575-86. 2009
    ..In addition, the enhanced HSP72 response in endurance-trained individuals may confer improved heat tolerance through both anti-inflammatory and anti-apoptotic mechanisms...
  11. ncbi Melatonin has no effect on tolerance to uncompensable heat stress in man
    T M McLellan
    Defence and Civil Institute of Environmental Medicine, Environmental and Applied Ergonomics Section, Toronto, ON, Canada
    Eur J Appl Physiol 83:336-43. 2000
    ..It was concluded that the small decrease in Tre following the ingestion of 5 mg of melatonin at rest in a cool environment had no influence on subsequent tolerance during uncompensable heat stress...
  12. ncbi The impact of various rehydration volumes for firefighters wearing protective clothing in warm environments
    G A Selkirk
    Operational Medicine Section, Defence R and D Canada Toronto, 1133 Sheppard Avenue West, P O Box 2000, Toronto, Ontario M3M 3B9, Canada
    Ergonomics 49:418-33. 2006
    ..2) compared to NH (65.3 +/- 3.8). It is concluded that incorporating even partial fluid replacement strategies while wearing firefighting protective clothing and self-contained breathing apparatus in the heat improves tolerance time...
  13. ncbi Efficacy of air and liquid cooling during light and heavy exercise while wearing NBC clothing
    T M McLellan
    Human Protection and Performance Sector, Defence and Civil Institute of Environmental Medicine, North York, Ontario, Canada
    Aviat Space Environ Med 70:802-11. 1999
    ....
  14. ncbi Effect of ingesting caffeine and ephedrine on 10-km run performance
    Douglas G Bell
    Defence and Civil Institute of Environmental Medicine, Toronto, Ontario, Canada
    Med Sci Sports Exerc 34:344-9. 2002
    ....
  15. doi HPA and SAS responses to increasing core temperature during uncompensable exertional heat stress in trained and untrained males
    Heather E Wright
    Faculty of Health, Kinesiology and Health Science, York University, Toronto, ON, M3J 1P3, Canada
    Eur J Appl Physiol 108:987-97. 2010
    ..For the TR, evidence existed for a reduced pituitary sensitivity to glucocorticoids and the amplified GH may have contributed to their greater T (c) tolerated...
  16. doi Physiological strain and countermeasures with firefighting
    S S Cheung
    Department of Physical Education and Kinesiology, Brock University, 500 Glenridge Avenue, St Catharines, Ontario, Canada
    Scand J Med Sci Sports 20:103-16. 2010
    ..Advances are required in materials science to develop lighter and less restrictive protective equipment, concurrent with cooling strategies that target specific regions or which can be effectively implemented during exercise...
  17. ncbi Physical work limits for Toronto firefighters in warm environments
    G A Selkirk
    Operational Medicine Section, Defence R and D Canada Toronto, Toronto, Ontario, Canada
    J Occup Environ Hyg 1:199-212. 2004
    ..Furthermore, these findings reveal passive recovery may not be sufficient to reduce T(re) below pre-recovery levels when working at higher metabolic rates in hot environments...
  18. ncbi Impact of fluid replacement on heat storage while wearing protective clothing
    T M McLellan
    Defence and Civil Institute of Environmental Medicine, Environmental and Applied Ergonomics Section, Toronto, ON, Canada
    Ergonomics 43:2020-30. 2000
    ..It was concluded that fluid replacement does not alter the rate of heat storage during uncompensable heat stress but does increase the heat storage capacity during light exercise when tolerance times are > 60 min...
  19. ncbi The importance of aerobic fitness in determining tolerance to uncompensable heat stress
    T M McLellan
    Defence and Civil Institute of Environmental Medicine, Environmental and Applied Ergonomics Section, P O Box 2000, Ontario M3M 3B9, Toronto, Canada
    Comp Biochem Physiol A Mol Integr Physiol 128:691-700. 2001
    ..Other factors such as differences in body fatness may account for a faster increase in tissue temperature at a given metabolic rate for less fit individuals...
  20. ncbi Mild endotoxemia, NF-kappaB translocation, and cytokine increase during exertional heat stress in trained and untrained individuals
    G A Selkirk
    Defence R and D Canada Toronto, 1133 Sheppard Ave E, Toronto, ON, Canada M3M 3B9
    Am J Physiol Regul Integr Comp Physiol 295:R611-23. 2008
    ....
  21. ncbi The impact of prior coffee consumption on the subsequent ergogenic effect of anhydrous caffeine
    Tom M McLellan
    Defence Research and Development Canada, Toronto, Canada
    Int J Sport Nutr Exerc Metab 14:698-708. 2004
    ..0 +/- 7.4, 27.8 +/- 10.8, 25.1 +/-7.9, 26.4 +/- 8.0 and 26.8 +/- 8.1 for trials A through F, respectively. In conclusion, the prior consumption of COF did not decrease the ergogenic effect of the subsequent ingestion of anhydrous CAF...
  22. ncbi Commercial sport drinks versus light meal combat rations: effect on simulated combat maneuvers
    Douglas G Bell
    Defence and Civil Institute of Environmental Medicine, Environmental and Applied Ergonomics Section, Toronto, Ontario, Canada
    Mil Med 167:692-7. 2002
    ..We further conclude that the CSD represent a readily available source of energy and fluid that could be used to replace and/or supplement the current LMCR...
  23. ncbi Perceptual versus physiological heat strain during exercise-heat stress
    Peter Tikuisis
    Defence Research and Development Canada Toronto, 1133 Sheppard Avenue West, PO Box 2000, Toronto, Ontario, Canada M3M 3B9
    Med Sci Sports Exerc 34:1454-61. 2002
    ..Unknown is whether this index, based on normalized increases in core temperature and heart rate, is matched by its perceptual analog...
  24. ncbi Exercise endurance 1, 3, and 6 h after caffeine ingestion in caffeine users and nonusers
    Douglas G Bell
    Defence R and D Canada Toronto, Toronto, Ontario, Canada M3M 3B9
    J Appl Physiol (1985) 93:1227-34. 2002
    ..3 +/- 6.5, 23.2 +/- 7.1, and 23.5 +/- 5.7 min. In conclusion, both the duration and magnitude of the ergogenic effect that followed a 5 mg/kg dose of caffeine were greater in the nonusers compared with the users...
  25. ncbi Effect of modafinil on core temperature during sustained wakefulness and exercise in a warm environment
    Tom M McLellan
    Defence and Civil Institute of Environmental Medicine, Environmental and Applied Ergonomics Section, Toronto, ON, Canada
    Aviat Space Environ Med 73:1079-88. 2002
    ..The purpose of this study was to examine the effects of modafinil on core temperature during rest and exercise throughout 40 h of sustained wakefulness in a warm environment...
  26. ncbi Effect of repeated caffeine ingestion on repeated exhaustive exercise endurance
    Douglas G Bell
    Operational Medicine Section, Defence R and D Canada Toronto, Ontario, Canada
    Med Sci Sports Exerc 35:1348-54. 2003
    ..The order of the treatment trials was double blind and randomized...
  27. ncbi Caffeine restores engagement speed but not shooting precision following 22 h of active wakefulness
    Peter Tikuisis
    Human Modelling Group, SMART, Defence R and D Canada Toronto, P O Box 2000, 1133 Sheppard Ave West, Toronto, ON, Canada M3M 3B9
    Aviat Space Environ Med 75:771-6. 2004
    ..Unknown is the efficacy of caffeine use on specific elements of target detection and marksmanship following a modest period of sustained wakefulness...
  28. ncbi The management of heat stress for the firefighter: a review of work conducted on behalf of the Toronto Fire Service
    Tom M McLellan
    Defence R and D Canada, Toronto, 1133 Sheppard Avenue West, Toronto, ON M3M3B9, Canada
    Ind Health 44:414-26. 2006
    ..The heat stress wheel that was generated can be used by Commanders to determine safe work limits for their firefighters during activities that involve wearing their protective clothing and carrying their SCBA...
  29. ncbi Accuracy of radiopill telemetry during distance running in the heat
    Tom M McLellan
    Med Sci Sports Exerc 39:393; author reply 394. 2007
  30. ncbi How does caffeine increase exercise capacity but decrease myocardial flow reserve?
    Tom M McLellan
    J Am Coll Cardiol 48:2355-6; author reply 2356. 2006