Professor, Kinesiology (on leave)
I am currently on administrative leave following 10 years as the Dean of FAHS. In 2027 I will begin a three-year phased retirement during which I will continue to research and teach part time. Prior to my time as Dean at Brock University, I was for 26 years a Professor, Department Chair and Interim Dean, at Wilfrid Laurier University, primarily in the Departments of Kinesiology and Health Sciences. Prior to my time at Laurier, I was a faculty member and Undergraduate Coordinator in the School of Physical and Health Education at the University of Toronto for over eight years. I have a Ph.D. in Kinesiology from the University of Waterloo and a MSc. and BSc. in Exercise Physiology and Physical Education respectively from York University. Although slowing down a bit as I age, I have been a competitive swimmer, triathlete and swim coach.
My main research interests have been in the areas of muscle physiology, the physiology and biochemistry of muscle damage and repair as influenced by hormones such as estrogen, the effects of antioxidants on skeletal muscle and exercise and the efficacy of alternative medicine interventions such as massage and ultrasound on post-exercise muscle damage, repair and recovery.
I am a member of the Canadian Society for Exercise Physiology
In recognition of my years of service and leadership in Exercise Physiology I have been designated a “Fellow” of the Canadian Society for Exercise Physiology (FCSEP)
Refereed Journals:
Hamstra, S.I., M.S. Geromella, P. Klentrou, P.M. Tiidus, R.E.K. MacPherson, and V.A. Fajardo. Effects of Low-Dose Lithium Supplementation on Thermal Inactivation of SERCA in Cardiac Muscle of Male Mice. Bioscience Reports BSR20253525,.2026
Tiidus P.M. Mechanisms and Efficacy of Massage Therapy for Post-Exercise Muscle Repair: A Narrative Review. Muscles 5:29, 10.3390, 2026
Hamstra S.I., M.S. Geromella, P.M Tiidus, N. Klentrou, R.E.K. MacPherson, and V.A. Fajardo Sub-therapeutic lithium supplementation causes physiological eccentric hypertrophy in young-adult wild-type male mice. Physiological Reports; 13:e70299, 2025
Hamstra. S.I., B.D. Roy, P. M. Tiidus, A.J. MacNeil, P. Klentrou, R.E.K. MacPherson and V.A. Fajardo. Beyond its psychiatric use: The benefits of low dose lithium supplementation. Current Neuropharmacology. 21:891-910, 2023
Pellegrino, A., P.M. Tiidus and R. Vandenboom, Mechanisms of estrogen influence on skeletal muscle: mass, regeneration and mitochondrial function. Sports Medicine 52: 2853-2869, 2022
Nelson, K., R. Kouvelioti, A. Theocharidis, B. Falk, P.M. Tiidus, and P. Klentrou. Osteokines and bone markers at rest and following plyometric exercise in pre- and postmenopausal women. BioMed Research International 2020: 7917309 (10 pages), 2020
Fillion, M., P.M. Tiidus and R. Vandenboom. Lack of influence of estrogen on myosin phosphorylation and post-tetanic potentiation in muscles from young adult C57BL mice. Canadian Journal of Physiology and Pharmacology 97: 729-737, 2019
Tiidus, P.M. Oestrogen and a “Goldilocks Zone” for post-damage muscle inflammation and repair? Journal of Physiology 596: 4563-4564, 2018
Mangan G, S. Iqbal, A. Hubbard, V. Hamilton, E. Bombardier and P.M. Tiidus, Delay in post-ovariectomy estrogen-replacement negates estrogen-induced augmentation of post-exercise satellite cell proliferation. Canadian Journal of Physiology and Pharmacology 93: 945-951, 2015
Antolini, M.R., Z.J. Weston and P.M. Tiidus, Physical fitness characteristics of a front-line firefighter population. Acta Kinesiologica Universitatis Tartuensis 21: 61-74, 2015
Tiidus, P.M. Alternative treatments for muscular injuries; massage, cryotherapy and hyperbaric oxygen, Current Reviews in Musculoskeletal Medicine 8: 162-167, 2015 (Invited Review)
Mangan, G, E. Bombardier, A. Mitchell, J. Quadrilatero and P.M. Tiidus, Oestrogen-dependent satellite cell activation and proliferation following a running exercise occurs via the PI3K signalling pathway and not IGF-1. Acta Physiologica 212: 75-85, 2014
Books:
Tupling, AR, Tiidus, P.M. Vandenboom R and M.E. Houston, Biochemistry Primer for Exercise Science 5th edition, Human Kinetics Publishers, Champaign Illinois USA (ISBN 978-1-4925-9360-7) p. 348, 2025
Tiidus, P.M., R.E.K. MacPherson, P. Leblanc and A.E. Josse. (Editors). The Routledge Handbook on Biochemistry of Exercise, Routledge/Taylor and Francis Publishers, New York USA & Oxon UK, (ISBN 978-0-367-22383-0) p. 560, 2021
Book Chapters:
Tiidus, P.M. Estrogen and menopause: Muscle maintenance, repair, function, and health. In A.C. Hackney, ed. Sex Hormones, Exercise and Women: Scientific and Clinical Aspects.2nd Edition Springer, Nature, New York, NY, USA 2023, pp. 151-166 (Invited Chapter update/revision)
Brown, M.B. and P.M. Tiidus. Sex hormone influenced differences in skeletal muscle responses to aging and exercise. In N.G. Neigh and M.M. Metzenfeld, eds. Sex Differences in Physiology, Elsevier Science; Academic Press, London UK, 2016, pp.167-180 (Invited Chapter)
Over my career I have taught undergraduate and graduate courses in exercise physiology, muscle physiology, nutrition and exercise as medicine. Going forward I will likely be teaching courses related to the Physiology of Aging and Nutrition.
As I return from administrative leave, I may have opportunities for 1-2 students to take on directed research of directed reading projects
As I am currently phasing toward retirement in 2030, I will not be taking primary supervision of graduate students but will co-supervise a few graduate students with other FAHS faculty if the opportunity arises and research interests coincide.
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