Andrew Barett

Dr Andrew Garrett

Lecturer in Exercise and Environmental Physiology

Faculty of Health Sciences

01482 463866

Dr Andrew Garrett’s main area of expertise is the markers of fatigue in temperature regulation during exercise and he is an associate member of the Hull York Medical School.

He completed his undergraduate and postgraduate degrees at the University of Wales Institute Cardiff and the University of Loughborough respectively.

His MSc thesis investigated intermittent exercise in hot and cool conditions. His PhD work was funded by the Australian military and based at the University of Otago in New Zealand. He examined the induction and decay of heat acclimation primarily focused on the response of the fluid-regulatory system in hot conditions.


Research Interests

  • Markers of fatigue in temperature regulation and hypoxic stress
  • Intermittent exercise in the heat
  • Health and safety of females exposed to heat stress conditions
  • Occupational Physiology with an interest in military operations
  • Heat therapy for chronic disease

Research groups

Dr Garrett’s recent research has focused on the effectiveness of short-term heat acclimation with dehydration, on intermittent and continuous exercise, with moderately and highly trained athletes. He has a specific interest in female’s response and adaptation to the heat. This work has culminated in several publications in the European Journal of Applied PhysiologyAmerican Journal of Human Biology, Frontiers in Physiology and a review in Sports Medicine. In this research theme he has a number of national (Dr Neil Maxwell, University of Brighton; Professor Vicky Goosey-Tolfrey, University of Loughborough and Dr Andrew Weller, QinetiQ-British Military) and international collaborations (Associate Professor Jim Cotter, University of Otago, New Zealand; Professor Hein Daanen (Vrije Universiteit Amsterdam, NL and Associate Professor Julien Periard (University of Canberra, AUS). 

In the research theme of chronic disease Dr Garrett has collaborated with Dr Enric Vilar (Renal Research Unit, Lister Hospital in Stevenage) investigating metabolism in kidney dialysis patients and published an article in the Journal of Renal Nutrition; and Dr Carmel McEniery (Cambridge University), on the cardiovascular health screening of young, ethnic populations. This work was presented at the European College of Sport Sciences. He has recently completed collaborative work with the Hull York Medical School. Investigating insulin absorption in diabetes patients during heat stress. He has published environmental stress and diabetes themed work in the journals; Frontiers in Endocrinology and Obesity, Metabolism+Diabetes.


Al-Qaissi, A., Papageorgiou, M., Javed, Z., Heise, T., Rigby, A. S., Garrett, A. T., Kilpatrick, E.S. & Atkin, S.L. & Sathyapalan, T. (2018). Environmental effects of ambient temperature and relative humidity on insulin pharmacodynamics in adults with type 1 diabetes mellitus.Diabetes, Obesity and Metabolism

Garrett, A. T., Goossens, N. G., Rehrer, N. J., Patterson, M. J., Harrison, J., Sammut, I. & Cotter, J. D. (2014), 'Short-term Heat Acclimation is Effective and is not Impaired by Dehydration during Acclimation', American Journal Human Biology, 26:311–320. 

Johnstone, J.A., Hughes, G.; Mitchell, A.M., Ford, P., Watson, T., Duffield, R., Gordon, D., Roberts, J. & Garrett, A. T. (2017). Accelerometry and heart rate responses of professional medium-fast bowlers in one-day and multi-day cricket. Journal of Sports Science and Medicine, 16, 311 – 317. 

Konya, J.T., Al-Qassi, A., Sathyapalan, T., Madden, L., Garrett, A.T., Kilpatrick, E.S. & Atkin, S.L. (2018). The effect of a simulated commercial flight environment with hypoxia and low humidity on clotting, platelet and endothelial function in participants with type 2 diabetes – a cross-over studyFrontiers in Endocrinology, 13 February 2018. 

Vilar, E., Machado, A., Garrett, A. T., Kozarski, R., Wellsted, D. & Farrington, K. (2014), 'Disease-specific Predictive Formulas for Energy Expenditure in the Dialysis Population', Journal of Renal Nutrition, Vol 24, No 4 (July), 243-251.

Full list


Modules list

  • Applied Human Physiology

  • Training and performance in extreme environments

  • Professional standards

  • Supervision of Undergraduate, Postgraduate and Post-doctoral Projects

Research PhDs

Current PhDs close to completion (x2)

Rachel Burke (2014- on going). Effectiveness of acute dietary nitrate supplementation on exercise performance in normoxic and hypoxic environments with younger and older participants

Damien Gleadall-Siddall (2013-on going). Cardiometabolic benefits of moderate-to-high intensity interval training compared to traditional training modalities


Completed PhDs (x6)

Dr Ahmed Al-Qaissi (2018). Environmental effects of insulin absorption in Type 1 Diabetes patients (collaboration with the Hull York Medical School, UK).

Dr Chris Towlson (2017). The maturity related physical phenotypes of English, elite youth soccer players: exploring the elite player performance plan.

Dr Steve Barrett (2016). PlayerLoadTM in Soccer: the reliability, validity and understanding the implications for fatigue management and injury risk.

Dr James Johnstone (2014). Effectiveness of the Bioharness physiological monitoring device for the measurement of elite performance in professional sport.

Dr Judit Konya (2013). The effect of a simulated flight environment with hypoxia and low humidity on clotting, platelet and endothelial function in patients with Type 2 Diabetes (collaboration with the Hull York Medical School, UK).  

Dr Enric Vilar (2012). Studies of methods to improve haemodialysis prescription (collaboration with the Renal Research Unit, Lister Hospital, Stevenage, UK).


Current MSc by Research close to completion (x2)

Cory Walkington (2018 on-going). Effectiveness of short-term heat acclimation (4-days) on oxidative stress markers with moderately trained males in a hot environment.

Jake Shaw (2017 on-going). Effectiveness of short-term heat acclimation (4-days) on continuous exercise with moderately trained males in a hot environment.


Completed MSc by Research

Victoria Biddlecombe (2019). Effectiveness of short-term heat acclimation on intermittent exercise in the heat with moderately-trained females controlling for menstrual cycle phase.

Edward Dodds (2019). Effectiveness of short-term heat acclimation on intermittent exercise in the heat with moderately-trained females controlling for menstrual cycle phase. 

Jarrod Gritt (2018). Health and well-being of female athletes in the preparation for competition in the heat controlling for menstrual phase.

Lewis Wombwell (2017). Effectiveness of a personal fluid delivery system on fluid uptake, physical and cognitive performance during a 90-minute soccer simulation in a thermal environment.

Matt Birkett (2016). Effectiveness of short-term heat acclimation (5-days) on intermittent exercise in a hot environment.

Fiona Nation (2016).  Effectiveness of short-term heat acclimation (5-days) on intermittent exercise in thermoneutral and hot environments.

Gwyneth Chard (2011). Ethnic differences in central versus peripheral blood pressure as markers of hypertension.

Natalie Kipps (2011). Ethnic differences in central versus peripheral blood pressure: Nature versus nurture?

Teaching awards and accolades

  • Senior Fellow of the Higher Education Academy (SFHEA)

  • Professional member of the British Association of Sport and Exercise Sciences (BASES)

Professional highlights

Academic qualifications

  • PhD, University of Otago, New Zealand

  • MSc, University of Loughborough, UK

  • BA(Hons), University of Wales, UK

  • PGCertHE, Waikato Institute of Technology, New Zealand

  • SFHEA, University of Hull, UK

External roles

  • Presented work at several international conferences such as the American College of Sports Medicine, Australian Physiological Society, European College of Sport Sciences and the International Conference on Environmental Ergonomics.

  • Member of an invited symposium team at the the Pre-Olympic conference in 2012, entitled ‘Rethinking the traditional heat acclimation strategy for Olympic and Paralympic athletes’

  • Regularly reviews articles for academic journals and a textbook reviewer for Taylor & Francis publications

  • Held PhD and MSc external examiner positions with the Universities of Brighton, Bedfordshire and Hertfordshire

  • Expert panel member for the validation of a new MSc at Anglia Ruskin University in Cambridge

Awards and accolades

Grant applications

  • International Research and Development (IRAD) with QinetiQ (UK military): £49K (2018).
  • International Research and Development (IRAD) with QinetiQ (UK military): £77K (2017)

  • VitaCress, UK-Research funding support: £15K (2017) (Awarded)

  • British Federation of Women Graduates Scholarships (BFWG): £6K (2017)

  • Funds for Women Graduates (FfWG): £5k (2017)

  • UEFA Research Grant Programme: 15,000 EUROS (2016)

  • João Havelange Research Scholarship (FIFA): 18,000 US$ (2015) (Awarded)

  • Ministry of Defence; ‘Medic in action’: £80K (2013)

  • British Renal Association UK: £55K (2010)

  • Kidney Research UK: £120K (2010)

  • Kidney Research UK project grant: £34K, (2009) (Awarded)

  • Zephyr Electronics Ltd, UK: £10K, (2009) (Awarded)

  • Ferring Pharmaceuticals, UK: £6k, (2008) (Awarded)

  • Prostate Cancer Society UK: £250k (2008)

  • Doctoral research: Australian Military: £15K (2001-2006) (Awarded)

Professional highlights

Dr Garrett is a competitive triathlete and competed in the 1990 Commonwealth Games in New Zealand. He is a keen athlete having competed in the London and Edinburgh marathons. He recently competed in the Hever Castle 1/2 Iron Triathlon and the International Triathlon Union series in Leeds albeit moving a lot slower than in his earlier athletic career!!!! He aspires to complete a full Iron Triathlon in the future.