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Geoff is a lecturer in Sport and Exercise Science and a member of the Institute for Applied Human Physiology. He recently joined Ïã¸ÛÁùºÏ²Ê¹ÒÅÆ×ÊÁÏ in 2024 after completing postgraduate training in environmental physiology and two postdoctoral fellowships studying the regulation of cerebral blood flow and neuroimaging. Geoff has had the opportunity to practice these areas of expertise around the world (e.g., Peru, Croatia) working with unique populations in various extreme environments (indigenous high altitude populations, free divers). Overall, these experiences have broadened Geoff’s scientific approach where he employs a diverse array of physiological research techniques (transcranial Doppler ultrasound, MRI, thermometry, etc.).

The successful coordination between cardiovascular, respiratory, autonomic, and thermoregulatory systems is essential to physiological homeostasis, particularly in environmentally or physiologically compromised scenarios. Natural (aging) and human-made (climate change) processes can increase the risk of serious health conditions such as heat stroke or cognitive impairment. Geoff’s research program examines the integrative cardiorespiratory aspects of human health and performance. His specific research interests include human health throughout the lifespan and how the environment influences that process – specifically, the human health impacts of climate change as well as the benefits of physical activity on cardiovascular health during the aging process.

Please email me if you are interested in postgraduate or postdoctoral opportunities.

• Postdoctoral Fellowship
  Faculty of Health Sciences, McMaster University, Hamilton, Canada, 2022–2024
• Postdoctoral Fellowship
  Western University, Ontario, 2020–2022
• PhD
  University of British Columbia, Okanagan, 2016–2020
• MSc
  University of Ottawa, 2013–2016
• BSc
  University of Ottawa, 2009–2013

Areas of research: 1) cardiovascular and thermoregulatory responses to extreme environments (heat, cold, diving), and 2) cerebrovascular regulation in health and aging. Both themes require an integrative approach assessing multiple organ systems that function to support to regulate thermal and cardiorespiratory homeostasis during combined environmental stressors (e.g., exercise, heat, and pollution), or to maintain cerebral oxygen delivery and therefore neural processes.

2024

• E-gyhoeddi cyn argraffu
  Tymko, M. M., Drapeau, A., Vieira-Coelho, M. A., Labrecque, L., Imhoff, S., Coombs, G. B., Langevin, S., Fortin, M., Châteauvert, N., Ainslie, P. N. & Brassard, P., 13 Ebr 2024, (E-gyhoeddi cyn argraffu) Yn: Journal of Cerebral Blood Flow and Metabolism. 12 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Fitzgibbon-Collins, L. K., Coombs, G. B., Noguchi, M., Parihar, S., Hughson, R. L., Borrie, M., Peters, S., Shoemaker, J. K. & Bhangu, J., Ion 2024, Yn: Cerebral circulation - cognition and behavior. 6, t. 100198
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2023

• Cyhoeddwyd
  D'Souza, A. W., Hissen, S. L., Manabe, K., Takeda, R., Washio, T., Coombs, G. B., Sanchez, B., Fu, Q. & Shoemaker, J. K., 1 Hyd 2023, Yn: American Journal of Physiology - Heart and Circulatory Physiology. 325, 4, t. H917-H932
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Carr, J. M., Ainslie, P. N., MacLeod, D. B., Tremblay, J. C., Nowak-Flück, D., Howe, C. A., Stembridge, M., Patrician, A., Coombs, G. B., Stacey, B. S., Bailey, D. M., Green, D. J. & Hoiland, R. L., Ion 2023, Yn: Journal of Cerebral Blood Flow and Metabolism. 43, 1, t. 99-114 16 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Park, A. J., Fandl, H. K., Garcia, V. P., Coombs, G. B., DeSouza, N. M., Greiner, J. J., Barak, O. F., Mijacika, T., Dujic, Z., Ainslie, P. N. & DeSouza, C. A., 3 Ebr 2023, Yn: Topics in spinal cord injury rehabilitation. 29, 2, t. 34-42 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Hoiland, R. L., MacLeod, D. B., Stacey, B. S., Caldwell, H. G., Howe, C. A., Nowak-Flück, D., Carr, J. M., Tymko, M. M., Coombs, G. B., Patrician, A., Tremblay, J. C., Van Mierlo, M., Gasho, C., Stembridge, M., Sekhon, M. S., Bailey, D. M. & Ainslie, P. N., Medi 2023, Yn: Journal of Cerebral Blood Flow and Metabolism. 43, 9, t. 1519-1531 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Al-Khazraji, B. K., Suskin, N. & Shoemaker, J. K., 1 Hyd 2023, Yn: Journal of applied physiology (Bethesda, Md. : 1985). 135, 4, t. 753-762 10 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  D'Souza, A. W., Takeda, R., Manabe, K., Hissen, S. L., Washio, T., Coombs, G. B., Sanchez, B., Fu, Q. & Shoemaker, J. K., 15 Gorff 2023, Yn: Journal of Physiology. 601, 14, t. 2877-2898 22 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2022

• Cyhoeddwyd
  Sarafis, Z. K., Squair, J. W., Barak, O. F., Coombs, G. B., Soriano, J. E., Larkin-Kaiser, K. A., Lee, A. H. X., Hansen, A., Vodopic, M., Romac, R., Grant, C., Charbonneau, R., Mijacika, T., Krassioukov, A. V., Ainslie, P. N., Dujic, Z. & Phillips, A. A., 1 Rhag 2022, Yn: American Journal of Physiology - Heart and Circulatory Physiology. 323, 6, t. H1311-H1322
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Patrician, A., Dawkins, T., Coombs, G. B., Stacey, B., Gasho, C., Gibbons, T., Howe, C. A., Tremblay, J. C., Stone, R., Tymko, K., Tymko, C., Akins, J. D., Hoiland, R. L., Vizcardo-Galindo, G. A., Figueroa-Mujíca, R., Villafuerte, F. C., Bailey, D. M., Stembridge, M., Anholm, J. D., Tymko, M. M. & Ainslie, P. N., Ebr 2022, Yn: Chest. 161, 4, t. 1022-1035 14 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Soriano, J. E., Romac, R., Squair, J. W., Barak, O. F., Sarafis, Z. K., Lee, A. H. X., Coombs, G. B., Vaseghi, B., Grant, C., Charbonneau, R., Mijacika, T., Krassioukov, A. V., Ainslie, P. N., Larkin-Kaiser, K. A., Phillips, A. A. & Dujic, Z., 3 Maw 2022, Yn: Applied Physiology, Nutrition, and Metabolism. 47, 3, t. 269-277 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2021

• Cyhoeddwyd
  Coombs, G. B., Tremblay, J. C., Shkredova, D. A., Carr, J. M. J. R., Wakeham, D. J., Patrician, A. & Ainslie, P. N., 1 Ion 2021, Yn: Journal of applied physiology (Bethesda, Md. : 1985). 130, 1, t. 149-159 11 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Akins, J. D., Patik, J. C., Vizcardo-Galindo, G. A., Figueroa-Mujica, R., Tymko, M. M., Stacey, B. S., Iannetelli, A., Bailey, D. M., Villafuerte, F. C., Ainslie, P. N. & Brothers, R. M., 20 Awst 2021, Yn: Free radical biology & medicine. 172, t. 451-458 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Caldwell, H. G., Coombs, G. B., Rafiei, H., Ainslie, P. N. & Little, J. P., Mai 2021, Yn: Applied Physiology, Nutrition, and Metabolism. 46, 5, t. 521-529 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Cramer, M. N., Ravanelli, N., Imbeault, P. & Jay, O., Ion 2021, Yn: Experimental Physiology. 106, 1, t. 359-369 11 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Patrician, A., Spajić, B., Gasho, C., Caldwell, H. G., Dawkins, T., Stembridge, M., Lovering, A. T., Coombs, G. B., Howe, C. A., Barak, O., Drviš, I., Dujić, Ž. & Ainslie, P. N., Ebr 2021, Yn: Experimental Physiology. 106, 4, t. 1120-1133 14 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Tymko, M. M., Hoiland, R. L., Tremblay, J. C., Stembridge, M., Dawkins, T. G., Coombs, G. B., Patrician, A., Howe, C. A., Gibbons, T. D., Moore, J. P., Simpson, L. L., Steinback, C. D., Meah, V. L., Stacey, B. S., Bailey, D. M., MacLeod, D. B., Gasho, C., Anholm, J. D., Bain, A. R., Lawley, J. S., Villafuerte, F. C., Vizcardo-Galindo, G. & Ainslie, P. N., Ion 2021, Yn: Experimental Physiology. 106, 1, t. 86-103 18 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2020

• Cyhoeddwyd
  Hoiland, R. L., Tremblay, J. C., Stacey, B. S., Coombs, G. B., Nowak-Flück, D., Tymko, M. M., Patrician, A., Stembridge, M., Howe, C. A., Bailey, D. M., Green, D. J., MacLeod, D. B. & Ainslie, P. N., Hyd 2020, Yn: Journal of Physiology. 598, 19, t. 4225-4236 12 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Brewster, L. M., Coombs, G. B., Garcia, V. P., Hijmans, J. G., DeSouza, N. M., Stockelman, K. A., Barak, O. F., Mijacika, T., Dujic, Z., Greiner, J. J., Phillips, A. A., Ainslie, P. N. & DeSouza, C. A., 17 Ebr 2020, Yn: Clinical science (London, England : 1979). 134, 7, t. 777-789 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Caldwell, H. G., Coombs, G. B., Howe, C. A., Hoiland, R. L., Patrician, A., Lucas, S. J. E. & Ainslie, P. N., Ebr 2020, Yn: Journal of Physiology. 598, 8, t. 1459-1473 15 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Carr, J., Stone, R., Tymko, C., Tymko, K., Coombs, G. B., Hoiland, R. L., Howe, C. A., Tymko, M. M., Ainslie, P. N. & Patrician, A., Medi 2020, Yn: High Altitude Medicine and Biology. 21, 3, t. 297-302 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Gibbons, T. D., Tymko, M. M., Thomas, K. N., Wilson, L. C., Stembridge, M., Caldwell, H. G., Howe, C. A., Hoiland, R. L., Akerman, A. P., Dawkins, T. G., Patrician, A., Coombs, G. B., Gasho, C., Stacey, B. S., Ainslie, P. N. & Cotter, J. D., Ion 2020, Yn: Journal of Physiology. 598, 2, t. 265-284 20 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Carr, J. M. J. R., Hoiland, R. L., Caldwell, H. G., Coombs, G. B., Howe, C. A., Tremblay, J. C., Green, D. J. & Ainslie, P. N., Rhag 2020, Yn: Journal of Physiology. 598, 23, t. 5333-5350 18 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Barak, O. F., Janjic, N., Drvis, I., Mijacika, T., Mudnic, I., Coombs, G. B., Thom, S. R., Madic, D. & Dujic, Z., Chwef 2020, Yn: Canadian journal of physiology and pharmacology. 98, 2, t. 124-130 7 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2019

• Cyhoeddwyd
  Gravel, H., Coombs, G. B., Behzadi, P., Marcoux-Clément, V., Barry, H., Juneau, M., Nigam, A. & Gagnon, D., Gorff 2019, Yn: Physiological Reports. 7, 13, t. e14166
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Barak, O. F., Phillips, A. A., Mijacika, T., Sarafis, Z. K., Lee, A. H. X., Squair, J. W., Bammert, T. D., DeSouza, N. M., Gagnon, D., Krassioukov, A. V., Dujic, Z., DeSouza, C. A. & Ainslie, P. N., 1 Maw 2019, Yn: American Journal of Physiology - Heart and Circulatory Physiology. 316, 3, t. H722-H733
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Vucina, D., Caldwell, H. G., Barak, O. F., Mijacika, T., Lee, A. H. X., Sarafis, Z. K., Squair, J. W., Krassioukov, A. V., Phillips, A. A., Dujic, Z. & Ainslie, P. N., Tach 2019, Yn: Spinal cord. 57, 11, t. 979-984 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Tremblay, J. C., Hoiland, R. L., Howe, C. A., Coombs, G. B., Vizcardo-Galindo, G. A., Figueroa-Mujíca, R. J., Bermudez, D., Gibbons, T. D., Stacey, B. S., Bailey, D. M., Tymko, M. M., MacLeod, D. B., Gasho, C., Villafuerte, F. C., Pyke, K. E. & Ainslie, P. N., Meh 2019, Yn: Hypertension (Dallas, Tex. : 1979). 73, 6, t. 1327-1335 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Tremblay, J. C., Coombs, G. B., Howe, C. A., Vizcardo-Galindo, G. A., Figueroa-Mujíca, R. J., Bermudez, D., Tymko, M. M., Villafuerte, F. C., Ainslie, P. N. & Pyke, K. E., 1 Tach 2019, Yn: American Journal of Physiology - Heart and Circulatory Physiology. 317, 5, t. H991-H1001
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B. & Tremblay, J. C., Ion 2019, Yn: Journal of Physiology. 597, 2, t. 371-372 2 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Squair, J. W., Lee, A. H. X., Sarafis, Z. K., Coombs, G., Barak, O., Cragg, J. J., Mijacika, T., Pecotic, R., Krassioukov, A. V., Dogas, Z., Dujic, Z. & Phillips, A. A., 10 Rhag 2019, Yn: Neurology. 93, 24, t. e2181-e2191
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Saleem, S., Sarafis, Z. K., Lee, A. H. X., Squair, J. W., Barak, O. F., Sober-Williams, E., Suraj, R., Coombs, G. B., Mijacika, T., West, C. R., Krassioukov, A. V., Ainslie, P. N., Dujic, Z., Tzeng, Y.-C. & Phillips, A. A., 1 Mai 2019, Yn: Journal of Neurotrauma. 36, 9, t. 1487-1490 4 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Patrician, A., Tymko, M. M., Caldwell, H. G., Howe, C. A., Coombs, G. B., Stone, R., Hamilton, A., Hoiland, R. L. & Ainslie, P. N., Maw 2019, Yn: High Altitude Medicine and Biology. 20, 1, t. 61-70 10 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Ravanelli, N., Coombs, G., Imbeault, P. & Jay, O., 1 Hyd 2019, Yn: Journal of applied physiology (Bethesda, Md. : 1985). 127, 4, t. 1095-1106 12 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2018

• Cyhoeddwyd
  Brugniaux, J. V., Coombs, G. B., Barak, O. F., Dujic, Z., Sekhon, M. S. & Ainslie, P. N., 1 Gorff 2018, Yn: American Journal of Physiology - Regulatory Integrative and Comparative Physiology. 315, 1, t. R1-R27
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl adolygu › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Ravanelli, N., Coombs, G. B., Imbeault, P. & Jay, O., Chwef 2018, Yn: Medicine and Science in Sports and Exercise. 50, 2, t. 299-307 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Caldwell, H. G., Coombs, G. B., Tymko, M. M., Nowak-Flück, D. & Ainslie, P. N., 1 Mai 2018, Yn: Physiology and Behavior. 188, t. 262-269 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Hoiland, R. L., Howe, C. A., Coombs, G. B. & Ainslie, P. N., Awst 2018, Yn: Clinical Autonomic Research . 28, 4, t. 423-435 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl adolygu › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Saleem, S., Vucina, D., Sarafis, Z., Lee, A. H. X., Squair, J. W., Barak, O. F., Coombs, G. B., Mijacika, T., Krassioukov, A. V., Ainslie, P. N., Dujic, Z., Tzeng, Y.-C. & Phillips, A. A., 1 Mai 2018, Yn: American Journal of Physiology - Heart and Circulatory Physiology. 314, 5, t. H1108-H1114
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2017

• Cyhoeddwyd
  Lee, A. H. X., Phillips, A. A., Squair, J. W., Barak, O. F., Coombs, G. B., Ainslie, P. N., Sarafis, Z. K., Mijacika, T., Vucina, D., Dujic, Z. & Krassioukov, A. V., 28 Rhag 2017, Yn: Spinal cord series and cases. 3, 17101.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Cramer, M. N., Ravanelli, N., Imbeault, P. & Jay, O., 1 Mai 2017, Yn: Journal of applied physiology (Bethesda, Md. : 1985). 122, 5, t. 1198-1207 10 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2016

• Cyhoeddwyd
  Dervis, S., Coombs, G. B., Chaseling, G. K., Filingeri, D., Smoljanic, J. & Jay, O., 15 Maw 2016, Yn: Journal of applied physiology (Bethesda, Md. : 1985). 120, 6, t. 615-23 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Morris, N. B., Coombs, G. & Jay, O., Ion 2016, Yn: Medicine and Science in Sports and Exercise. 48, 1, t. 114-22 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2015

• Cyhoeddwyd
  Coombs, G. B., Cramer, M. N., Ravanelli, N. M., Morris, N. B. & Jay, O., Meh 2015, Yn: Scandinavian Journal of Medicine and Science in Sports. 25 Suppl 1, t. 96-103 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Cyhoeddwyd
  Coombs, G. B., Stamatakis, E. & Jay, O., Gorff 2015, Yn: European Journal of Applied Physiology. 115, 7, t. 1601-2 2 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl