Dr Ralph Manders

Lecturer in Exercise Physiology


Areas of specialism

Exercise Physiology; Sport Science; Muscle Metabolism; Nutrition; Glycemic Control

University roles and responsibilities

  • Co-Programme Leader Sport & Exercise Science BSc.
  • Admissions Tutor Sport & Exercise Science BSc.
  • Radiation Protection Supervisor FHMS
Media Contacts

Contact the press team



Phone: +44 (0)1483 684380 / 688914 / 684378
Out-of-hours: +44 (0)7773 479911
Senate House, University of Surrey
Guildford, Surrey GU2 7XH


Research interests

My teaching


Postgraduate research supervision

Postgraduate research supervision

My publications


1. van Loon, L.J., R. Koopman, R.J. Manders, W. van der Weegen, G.P. van Kranenburg, and H.A. Keizer (2004) Intramyocellular lipid content in type 2 diabetes patients compared with overweight sedentary men and highly trained endurance athletes. Am J Physiol Endocrinol Metab, 287(3):E558-65.

2. Koopman, R., R.J. Manders, A.H. Zorenc, G.B. Hul, H. Kuipers, H.A. Keizer, and L.J. van Loon (2005) A single session of resistance exercise enhances insulin sensitivity for at least 24 h in healthy men. Eur J Appl Physiol, 94(1-2):180-7.

3. Koopman, R., A.J. Wagenmakers, R.J. Manders, A.H. Zorenc, J.M. Senden, M. Gorselink, H.A. Keizer, and L.J. van Loon (2005) Combined ingestion of protein and free leucine with carbohydrate increases postexercise muscle protein synthesis in vivo in male subjects. Am J Physiol Endocrinol Metab, 288(4):E645-53.

4. Manders, R.J., A.J. Wagenmakers, R. Koopman, A.H. Zorenc, P.P. Menheere, N.C. Schaper, W.H. Saris, and L.J. van Loon (2005) Co-ingestion of a protein hydrolysate and amino acid mixture with carbohydrate improves plasma glucose disposal in patients with type 2 diabetes. Am J Clin Nutr, 82(1):76-83.

5. Punyadeera, C., A.H. Zorenc, R. Koopman, A.J. McAinch, E. Smit, R.J. Manders, H.A. Keizer, D. Cameron-Smith, and L.J. van Loon (2005) The effects of exercise and adipose tissue lipolysis on plasma adiponectin concentration and adiponectin receptor expression in human skeletal muscle. Eur J Endocrinol, 152(3):427-36.

6. van Loon, L.J., R.J. Manders, R. Koopman, B. Kaastra, J.H. Stegen, A.P. Gijsen, W.H. Saris, and H.A. Keizer (2005) Inhibition of adipose tissue lipolysis increases intramuscular lipid use in type 2 diabetic patients. Diabetologia, 48(10):2097-107.

7. Kaastra, B., R.J. Manders, E. Van Breda, A. Kies, A.E. Jeukendrup, H.A. Keizer, H. Kuipers, and L.J. van Loon (2006) Effects of increasing insulin secretion on acute postexercise blood glucose disposal. Med Sci Sports Exerc, 38(2):268-75.

8. Koopman, R., R.J. Manders, R.A. Jonkers, G.B. Hul, H. Kuipers, and L.J. van Loon (2006) Intramyocellular lipid and glycogen content are reduced following resistance exercise in untrained healthy males. Eur J Appl Physiol, 96(5):525-34.

9. Koopman, R., L. Verdijk, R.J. Manders, A.P. Gijsen, M. Gorselink, E. Pijpers, A.J. Wagenmakers, and L.J. van Loon (2006) Co-ingestion of protein and leucine stimulates muscle protein synthesis rates to the same extent in young and elderly lean men. Am J Clin Nutr, 84(3):623-32.

10. Manders, R.J., R. Koopman, W.E. Sluijsmans, R. van den Berg, K. Verbeek, W.H. Saris, A.J. Wagenmakers, and L.J. van Loon (2006) Co-ingestion of a protein hydrolysate with or without additional leucine effectively reduces postprandial blood glucose excursions in Type 2 diabetic men. J Nutr, 136(5): 1294-9.

11. Manders, R.J., S.F. Praet, R.C. Meex, R. Koopman, A.L. de Roos, A.J. Wagenmakers, W.H. Saris, and L.J. van Loon (2006) Protein hydrolysate/leucine co-ingestion reduces the prevalence of hyperglycemia in type 2 diabetic patients. Diabetes Care, 29(12):2721-2.

12. Praet, S.F., R.J. Manders, A.G. Lieverse, H. Kuipers, C.D. Stehouwer, H.A. Keizer, and L.J. van Loon (2006) Influence of acute exercise on hyperglycemia in insulin-treated type 2 diabetes. Med Sci Sports Exerc, 38(12):2037-44.

13. Praet, S.F., R.J. Manders, R.C. Meex, A.G. Lieverse, C.D. Stehouwer, H. Kuipers, H.A. Keizer, and L.J. van Loon, (2006) Glycaemic instability is an underestimated problem in Type II diabetes. Clin Sci (Lond), 111(2):119-26.

14. Manders, R.J., R. Koopman, M. Beelen, A.P. Gijsen, W.K. Wodzig, W.H. Saris, and L.J. van Loon (2008) The muscle protein synthetic response to carbohydrate and protein ingestion is not impaired in men with longstanding type 2 diabetes. J Nutr, 138(6):1079-85.

15. Hansen, D., P. Dendale, R.A. Jonkers, M. Beelen, R.J. Manders, L. Corluy, A. Mullens, J. Berger, R. Meeusen, and L.J. van Loon (2009) Continuous low- to moderate-intensity exercise training is as effective as moderate- to high-intensity exercise training at lowering blood HbA(1c) in obese type 2 diabetes patients. Diabetologia, 52(9): 1789-97.

16. Manders, R.J. and L.J. Van Loon (2009) Protein supplementation as a dietary strategy to improve glycemic control in type 2 diabetes mellitus Netherlands Journal of Diabetologia, 2:49-56.

17. Weseler, A.R., L. Geraets, H.J. Moonen, R.J. Manders, L.J. van Loon, H.J. Pennings, E.F. Wouters, A. Bast, and G.J. Hageman (2009) Poly (ADP-ribose) polymerase-1-inhibiting flavonoids attenuate cytokine release in blood from male patients with chronic obstructive pulmonary disease or type 2 diabetes. J Nutr, 139(5):952-7.

18. Manders, R.J., S.F. Praet, M.H. Vikstrom, W.H. Saris, and L.J. van Loon (2009) Protein hydrolysate co-ingestion does not modulate 24 h glycemic control in long-standing type 2 diabetes patients. Eur J Clin Nutr, 63(1):121-6.

19. Manders, R.J., B. Pennings, C.P. Beckers, T.I. Aipassa, and L.J. van Loon (2009) Prevalence of daily hyperglycemia in obese type 2 diabetic men compared with that in lean and obese normoglycemic men: effect of consumption of a sucrose-containing beverage. Am J Clin Nutr 90:511-8.

20. Manders, R.J., J. van Dijk, and L.J. Van Loon (2010) Low-Intensity exercise reduces the prevalence of hyperglycemia in type 2 diabetes. Med Sci Sports Exerc, 42:219-25.

21. Manders, R.J., J.W. van Dijk, F. Hartgens, C.D. Stehouwer, S.F.E. Praet, and L.J.C. van Loon (2011) Postprandial hyperglycemia is highly prevalent throughout the day in type 2 diabetes patients. Diabetes Research and Clinical Practice, 93:31-7.

22. van Dijk, J.W., R.J. Manders, K. Tummers, A.G. Bonomi, C.D. Stehouwer, F. Hartgens, and L.J.C. van Loon (2012) Both resistance- and endurance-type exercise reduce the prevalence of hyperglycaemia in individuals with impaired glucose tolerance and in insulin-treated and non-insulin-treated type 2 diabetic patients. Diabetologia, 55(5):1273-82.

23. Manders, R.J., J.P. Little, S.C. Forbes and D.G. Candow (2012) Insulinotropic and Muscle Protein Synthetic Effects of Branched-Chain Amino Acids: Potential Therapy for Type 2 Diabetes and Sarcopenia. Nutrients, 4(11), 1664-1678.

24. Van Dijk JW, R.J. Manders, E.E. Canfora, W.V. Mechelen, F. Hartgens, C.D. Stehouwer, and L.J.C. van Loon (2013) Exercise and 24-h glycemic control: equal effects for all type 2 diabetes patients? Med Sci Sports Exerc, 45(4):628-35.

25. Manders, R.J., D. Hansen, A.H. Zorenc, P. Dendale, J. Kloek, W.H. Saris, and Luc J.C. van Loon (2014) Protein co-ingestion strongly increases postprandial insulin secretion in type 2 diabetes patients. Journal of Medicinal Food, Jul;17(7):758-63.26. Little J.P, Jung M.E, Wright A.E, Wright W, Manders R.J. (2014) Effects of high-intensity interval exercise versus continuous moderate-intensity exercise on postprandial glycemic control assessed by continuous glucose monitoring in obese adults. Appl Physiol Nutr Metab Jul;39(7):835-41

27. Chalil S, Jaspers R.T., Manders R.J., Klein-Nulend J, Bakker AD, Deldicque L. (2015) Increased endoplasmic reticulum stress in mouse osteocytes with aging alters Cox-2 response to mechanical stimuli. Calcif Tissue Int., Feb;96(2):123-8.