Personal profile
Research interests
James is Professor of Metabolic Physiology at the University of Bath, where he is Co-Director of the Centre for Nutrition, Exercise & Metabolism and Chair of the Biomedical Sciences Research Ethics Committee. His research employs randomised controlled trials to study the effects of nutrition on metabolic regulation, the findings of which have been published in scientific papers in top-ranking scholarly journals. A particular focus of his work has been to examine the links between nutrient timing and human health, for which James was awarded the Nutrition Society Cuthbertson Medal at the Royal Society of Medicine for 'excellence in clinical nutrition and metabolism research'. James contributes widely within the University, having supervised many doctoral students through their research training; his integration of research into teaching was recognised by the University's Mary Tasker Award for excellence in teaching. James has served as Editor-in-Chief of the International Journal of Sport Nutrition & Exercise Metabolism since 2019.
Other responsibilities
Co-Director of the Centre for Nutrition, Exercise and Metabolism (CNEM)
Chair of the Department for Health Research Ethics Committee.
Editor-in-Chief of the International Journal of Sport Nutrition & Exercise Metabolism.
Editorial Advisory Board of the British Nutrition Foundation Nutrition Bulletin.
Fellow of the American College of Sports Medicine.
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):
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SDG 3 Good Health and Well-being
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Collaborations and top research areas from the last five years
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Bath NIHR Mental Health Research Group
Jacobsen, P. (PI), Betts, J. (CoI), Brown, C. (CoI), Button, K. (CoI), Fairchild, G. (CoI), Freeman, T. (CoI), Halligan, S. (CoI), Hines, L. (CoI), Lambert, J. (CoI), Loades, M. (CoI), Russell, A. (CoI), Stallard, P. (CoI), Sunderland, P. (CoI) & Taylor, E. (CoI)
National Institute for Health Research
1/01/25 → 31/12/29
Project: Central government, health and local authorities
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CHARACTERISING RHYTHMICITY IN HUMAN SKELETAL MUSCLE METABOLISM
Betts, J. (PI), Gonzalez, J. (CoI), Koumanov, F. (CoI), Thompson, D. (CoI) & Walhin, J.-P. (CoI)
Biotechnology and Biological Sciences Research Council
1/12/24 → 31/05/27
Project: Research council
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NextGen-O2k all-in-one Oroboros O2k Modular system for High-Resolution Respirometry
Koumanov, F. (PI), Thompson, D. (CoI), Gonzalez, J. (CoI), Betts, J. (CoI), Walhin, J.-P. (CoI), Maher, J. (CoI), Perkin, O. (CoI), Ward, A. (CoI), Whitley, P. (CoI), Gurevich, D. (CoI), Tosh, D. (CoI) & Cevik, V. (CoI)
1/01/24 → 31/12/24
Project: Research-related funding
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REVEALING THE MECHANISMS BY WHICH GALACTOSE INGESTION EXAGGERATES POSTPRANDIAL LIPAEMIA - IMPLICATIONS FOR CARDIOVASCULAR DISEASE RISK?
Gonzalez, J. (PI), Betts, J. (CoI) & Thompson, D. (CoI)
1/12/19 → 28/02/23
Project: UK charity
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Mobilising Vitamin D Sequestered In Adipose Tissue In Humans
Thompson, D. (PI), Betts, J. (CoI) & Gonzalez, J. (CoI)
Biotechnology and Biological Sciences Research Council
11/10/18 → 10/01/23
Project: Research council
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Basal Metabolic Requirements, Biomarkers of Cardiometabolic Health, and Anthropometric Measures of Obesity in Women and Men With Restricted Growth Conditions
Merrell, L. H., Smith, H. A., Carroll, H. A., Chen, Y. C., Thompson, D., Gonzalez, J. T., Atkinson, G. & Betts, J. A., 31 Jan 2026, In: American Journal of Medical Genetics - Part A. 200, 1, p. 144-154 11 p., e64235.Research output: Contribution to journal › Article › peer-review
Open Access -
Cardiorespiratory Fitness, Functional Fitness and Body Composition Among Breast Cancer Survivors With 8 Weeks of Exercise Training: A Randomised, Controlled Non-Inferiority Trial Comparing Remotely-Supported and Partly-Supervised Interventions
Struszczak, L., Walhin, J. P., Betts, J., Thompson, D., Beresford, M. & Turner, J. E., 28 Feb 2026, In: Cancer Medicine. 15, 2, e71608.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Citation (SciVal) -
Circadian Rhythms, Feeding Patterns, and Metabolic Regulation: Implications for Critical Care
Smith, H. A. & Betts, J. A., 28 Feb 2026, In: Proceedings of the Nutrition Society. 85, 1, p. 1-5Research output: Contribution to journal › Review article › peer-review
Open Access3 Link opens in a new tab Citations (SciVal) -
Energy requirements: the case for the factorial model
Millward, J., Betts, J., Bilzon, J., Gonzalez, J. & Thompson, D., 21 Apr 2026, (Acceptance date) In: The American Journal of Clinical Nutrition.Research output: Contribution to journal › Article › peer-review
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Feeding-regulated glycogen metabolism drives rhythmic liver protein secretion
Weger, M., Mauvosin, D., Hoyle, D., Wang, J., Martin, E., Rae, J., Ferguson, C., Klinke, G., Cielesh, M., Macauslane, K. L., Larance, M., Quadroni, M., Templeman, I., Walhin, J.-P., Karagounis, L. G., Betts, J., Johnston, J. D., Durussel, F., Firsov, D. & Fournier, S. & 5 others, , Feb 2026, In: Nature Metabolism. 8, 2, p. 327-349 23 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Citation (SciVal)
Datasets
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Evaluation of a graded exercise test to determine peak fat oxidation in individuals with low cardiorespiratory fitness
Chrzanowski-Smith, O. (Creator), Edinburgh, R. (Creator), Gonzalez, J. (Creator), Betts, J. (Contributor) & Stokes, K. (Contributor), University of Bath, 5 Nov 2019
DOI: 10.15125/BATH-00706
Dataset
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Dataset for 'Prior exercise alters the difference between arterialised and venous glycaemia – implications for blood sampling procedures'
Edinburgh, R. (Creator), Hengist, A. (Creator), Smith, H. (Creator), Walhin, J.-P. (Creator), Betts, J. (Creator), Gonzalez, J. (Creator) & Thompson, D. (Supervisor), University of Bath, 15 Jun 2017
DOI: 10.15125/BATH-00352
Dataset
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Datset for "Resting skeletal muscle ATGL and CPT1B are associated with peak fat oxidation rates in men and women but do not explain observed sex differences"
Chrzanowski-Smith, O. (Creator), Edinburgh, R. (Creator), Gonzalez, J. (Creator), Thomas, M. (Data Collector), Smith, E. (Data Collector), Walhin, J.-P. (Data Collector), Koumanov, F. (Data Collector), Williams, S. (Supervisor) & Betts, J. (Supervisor), University of Bath, 12 Mar 2021
DOI: 10.15125/BATH-00729
Dataset
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Dataset for the day-to-day reliability of peak fat oxidation and FATMAX
Chrzanowski-Smith, O. (Creator), Edinburgh, R. (Creator), Gonzalez, J. (Creator), Thomas, M. (Data Collector), Haralabidis, N. (Data Collector), Williams, S. (Supervisor) & Betts, J. (Supervisor), University of Bath, 13 May 2020
DOI: 10.15125/BATH-00723
Dataset
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Dataset for "Biological sex and aerobic capacity are key determinants of peak fat oxidation rates during exercise"
Chrzanowski-Smith, O. (Creator), Edinburgh, R. (Creator), Gonzalez, J. (Creator), Thomas, M. (Data Collector), Hengist, A. (Data Collector), Williams, S. (Supervisor) & Betts, J. (Supervisor), University of Bath, 11 Dec 2020
DOI: 10.15125/BATH-00611
Dataset