Projects per year
Personal profile
Overview
Geoff is a lecturer in Sport and Exercise Science and a member of the Institute for Applied Human Physiology. He recently joined Bangor University 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.
Research
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.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Postdoctoral Fellowship, McMaster University
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
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Collaborations and top research areas from the last five years
Projects
- 1 Active
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The impact of heat exposure on tolerance to posture changes during simulated working conditions
Coombs, G. (PI)
31/03/25 → 14/04/26
Project: Research
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Acute ketone monoester ingestion lowers resting cerebral blood flow: a randomized cross‐over trial
Rourke, A. J., Yong, C. M. S., Coombs, G. B., Odisho, A. R., Nash, J. A., Bone, J., Al‐Khazraji, B. K. & Walsh, J. J., 11 May 2025, (E-pub ahead of print) In: Journal of Physiology.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Muscle oxygenation and local blood volume difference between intercostal and deltoid during dry static apnea in breath-hold divers
Vrdoljak, D., Dujić, Ž., Hubbard, C. D., Coombs, G. B., Lovering, A. T., Drvis, I., Foretic, N. & Duke, J. W., 6 Feb 2025, (E-pub ahead of print) In: Respiratory Physiology & Neurobiology. 335, p. 104402Research output: Contribution to journal › Article › peer-review
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New evidence for baroreflex and respiratory chemoreflex-mediated cerebral sympathetic activation in humans
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., 1 Feb 2025, In: Journal of applied physiology (Bethesda, Md. : 1985). 138, 2, p. 366-377 12 p.Research output: Contribution to journal › Article › peer-review
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Respiratory muscle strength pre- and post-maximal apneas in a world champion breath-hold diver
Duke, J. W., Hubbard, C. D., Vrdoljak, D., Coombs, G. B., Lovering, A. T., Drvis, I., Dujić, Ž. & Foretic, N., 1 Jan 2025, In: Journal of applied physiology (Bethesda, Md. : 1985). 138, 1, p. 66-72 7 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile6 Downloads (Pure) -
Acute isometric and dynamic exercise do not alter cerebral sympathetic nerve activity in healthy humans
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 Apr 2024, (E-pub ahead of print) In: Journal of Cerebral Blood Flow and Metabolism. 12 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile40 Downloads (Pure)
Press/Media
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Research to study the benefits of a sauna, as popularity rises
6/03/25
1 Media contribution
Press/Media: Research