Research Portal

Dr Geoff Coombs

Lecturer in Sport & Exercise Science

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  1. Article › Research › Peer-reviewed

  2. Hourly staircase sprinting exercise "snacks" improve femoral artery shear patterns but not flow-mediated dilation or cerebrovascular regulation: a pilot study

    Caldwell, H. G., Coombs, G. B., Rafiei, H., Ainslie, P. N. & Little, J. P., May 2021, In: Applied Physiology, Nutrition, and Metabolism. 46, 5, p. 521-529 9 p.

    Research output: Contribution to journal › Article › peer-review

  3. Ice Slurry Ingestion Leads to a Lower Net Heat Loss during Exercise in the Heat

    Morris, N. B., Coombs, G. & Jay, O., Jan 2016, In: Medicine and Science in Sports and Exercise. 48, 1, p. 114-22 9 p.

    Research output: Contribution to journal › Article › peer-review

  4. Impact of ischemic heart disease and cardiac rehabilitation on cerebrovascular compliance

    Coombs, G. B., Al-Khazraji, B. K., Suskin, N. & Shoemaker, J. K., 1 Oct 2023, In: Journal of applied physiology (Bethesda, Md. : 1985). 135, 4, p. 753-762 10 p.

    Research output: Contribution to journal › Article › peer-review

  5. Internal carotid and brachial artery shear-dependent vasodilator function in young healthy humans

    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., Dec 2020, In: Journal of Physiology. 598, 23, p. 5333-5350 18 p.

    Research output: Contribution to journal › Article › peer-review

  6. Maximum Skin Wettedness after Aerobic Training with and without Heat Acclimation

    Ravanelli, N., Coombs, G. B., Imbeault, P. & Jay, O., Feb 2018, In: Medicine and Science in Sports and Exercise. 50, 2, p. 299-307 9 p.

    Research output: Contribution to journal › Article › peer-review

  7. 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

  8. Normobaric hypoxia does not alter the critical environmental limits for thermal balance during exercise-heat stress

    Coombs, G. B., Cramer, M. N., Ravanelli, N., Imbeault, P. & Jay, O., Jan 2021, In: Experimental Physiology. 106, 1, p. 359-369 11 p.

    Research output: Contribution to journal › Article › peer-review

  9. Passive heat therapy for cerebral protection: new ideas of age-old concepts

    Coombs, G. B. & Tremblay, J. C., Jan 2019, In: Journal of Physiology. 597, 2, p. 371-372 2 p.

    Research output: Contribution to journal › Article › peer-review

  10. Passive leg cycling increases activity of the cardiorespiratory system in people with tetraplegia

    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 Mar 2022, In: Applied Physiology, Nutrition, and Metabolism. 47, 3, p. 269-277 9 p.

    Research output: Contribution to journal › Article › peer-review

  11. 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

  12. Severity-dependent influence of isocapnic hypoxia on reaction time is independent of neurovascular coupling

    Caldwell, H. G., Coombs, G. B., Tymko, M. M., Nowak-Flück, D. & Ainslie, P. N., 1 May 2018, In: Physiology and Behavior. 188, p. 262-269 8 p.

    Research output: Contribution to journal › Article › peer-review

  13. Sleep-disordered breathing is associated with brain vascular reactivity in spinal cord injury

    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 Dec 2019, In: Neurology. 93, 24, p. e2181-e2191

    Research output: Contribution to journal › Article › peer-review

  14. Spinal Cord Disruption Is Associated with a Loss of Cushing-Like Blood Pressure Interactions

    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 May 2019, In: Journal of Neurotrauma. 36, 9, p. 1487-1490 4 p.

    Research output: Contribution to journal › Article › peer-review

  15. Standing middle cerebral artery velocity predicts cognitive function and gait speed in older adults with cognitive impairment, and is impacted by sex differences

    Fitzgibbon-Collins, L. K., Coombs, G. B., Noguchi, M., Parihar, S., Hughson, R. L., Borrie, M., Peters, S., Shoemaker, J. K. & Bhangu, J., Jan 2024, In: Cerebral circulation - cognition and behavior. 6, p. 100198

    Research output: Contribution to journal › Article › peer-review

  16. Temporal changes in pulmonary gas exchange efficiency when breath-hold diving below residual volume

    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., Apr 2021, In: Experimental Physiology. 106, 4, p. 1120-1133 14 p.

    Research output: Contribution to journal › Article › peer-review

  17. Published

    The 2018 Global Research Expedition on Altitude-related Chronic Health (REACH) to Cerro de Pasco, Peru: An Experimental Overview

    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., Jan 2021, In: Experimental Physiology. 106, 1, p. 86-103 18 p.

    Research output: Contribution to journal › Article › peer-review

  18. The Effect of an Expiratory Resistance Mask with Dead Space on Sleep, Acute Mountain Sickness, Cognition, and Ventilatory Acclimatization in Normobaric Hypoxia

    Patrician, A., Tymko, M. M., Caldwell, H. G., Howe, C. A., Coombs, G. B., Stone, R., Hamilton, A., Hoiland, R. L. & Ainslie, P. N., Mar 2019, In: High Altitude Medicine and Biology. 20, 1, p. 61-70 10 p.

    Research output: Contribution to journal › Article › peer-review

  19. The interactive effects of age and sex on the neuro-cardiovascular responses during fatiguing rhythmic handgrip exercise

    D'Souza, A. W., Takeda, R., Manabe, K., Hissen, S. L., Washio, T., Coombs, G. B., Sanchez, B., Fu, Q. & Shoemaker, J. K., 15 Jul 2023, In: Journal of Physiology. 601, 14, p. 2877-2898 22 p.

    Research output: Contribution to journal › Article › peer-review

  20. Thermoregulatory adaptations with progressive heat acclimation are predominantly evident in uncompensable, but not compensable, conditions

    Ravanelli, N., Coombs, G., Imbeault, P. & Jay, O., 1 Oct 2019, In: Journal of applied physiology (Bethesda, Md. : 1985). 127, 4, p. 1095-1106 12 p.

    Research output: Contribution to journal › Article › peer-review

  21. Thermoregulatory responses to exercise at a fixed rate of heat production are not altered by acute hypoxia

    Coombs, G. B., Cramer, M. N., Ravanelli, N., Imbeault, P. & Jay, O., 1 May 2017, In: Journal of applied physiology (Bethesda, Md. : 1985). 122, 5, p. 1198-1207 10 p.

    Research output: Contribution to journal › Article › peer-review

  22. Vascular dysfunction following breath-hold diving

    Barak, O. F., Janjic, N., Drvis, I., Mijacika, T., Mudnic, I., Coombs, G. B., Thom, S. R., Madic, D. & Dujic, Z., Feb 2020, In: Canadian journal of physiology and pharmacology. 98, 2, p. 124-130 7 p.

    Research output: Contribution to journal › Article › peer-review

  23. Wavelet decomposition analysis is a clinically relevant strategy to evaluate cerebrovascular buffering of blood pressure after spinal cord injury

    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 May 2018, In: American Journal of Physiology - Heart and Circulatory Physiology. 314, 5, p. H1108-H1114

    Research output: Contribution to journal › Article › peer-review

  24. Review article › Research › Peer-reviewed

  25. Highs and lows of hyperoxia: physiological, performance, and clinical aspects

    Brugniaux, J. V., Coombs, G. B., Barak, O. F., Dujic, Z., Sekhon, M. S. & Ainslie, P. N., 1 Jul 2018, In: American Journal of Physiology - Regulatory Integrative and Comparative Physiology. 315, 1, p. R1-R27

    Research output: Contribution to journal › Review article › peer-review

  26. Ventilatory and cerebrovascular regulation and integration at high-altitude

    Hoiland, R. L., Howe, C. A., Coombs, G. B. & Ainslie, P. N., Aug 2018, In: Clinical Autonomic Research . 28, 4, p. 423-435 13 p.

    Research output: Contribution to journal › Review article › peer-review

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