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BA (Hons), MA, PhD, FHEA


Areas of Expertise

  • Epidemiology of Obesity and Cardiometabolic Disease.
  • Physical Activity and Health.
  • Clinical Exercise Physiology.
  • Metabolic Physiology.
  • Weight managemement
  • Body composition assessment
  • Growth, development and childhood obesity


MSc Obesity & Weight Management Course Leader


Retallick CJ, Baker JS, Williams SRP, Whitcombe D and Davies B. Plasma volume response to 30s cycle ergometry: influence on lipid and lipoprotein. Medicine and Science in Sports and Exercise (2007) 39 (9): 1579-1586.

Thomas NE, Cooper SM, Williams SP, Baker JS, Davies B. Relationship of fitness, fatness and coronary-heart disease risk factors in 12- to 13- year olds. Pediatric Exercise Science (2007) 19: 1; 93-101.

Sabin M, De Hora M, Holly J, Hunt L, Ford A, Williams S, Baker J, Retallick C, Crowne E and Shield J. Fasting non-esterified fatty acid profiles in childhood and their relationship with adiposity, insulin sensitivity and lipids. Pediatrics 120:6; 1426-1433.

Taylor J, Williams S, Rhys R, James P, Frenneaux M. Conjugated Linoleic Acid Impairs Endothelial Function. Arteriosclerosis, Thrombosis and Vascular Biology 26: 1-6; 2006.

Simon Williams. Active Lives: Physical Activity in Disadvantaged Communities. Full Report. Bevan Foundation Policy Paper no. 9. ISBN 1-094767-18-4. The Bevan Foundation, Tredegar, July 2006.

Simon Williams and Rhys Williams. Obesity, type 2 diabetes mellitus and the metabolic syndrome: What are the choices for prevention in the twenty-first century? In, McNammee, M (Ed). Philosophy and the Sciences of Exercise, Health and Sport. Essays for Critical Research. Routledge, Novmber 2004


British Association of Sport and Exercise Science
Association for the Study of Obesity
Welsh Obesity Society
Public Health Improvement Research Network (PHIRN) Advisory Board


External Examiner for MSc Nutrition, Physical Activity and Public Health at Bristol University


My principal and related research interests focus on the related issues of obesity, type 2 diabetes mellitus and cardiovascular disease. Broadly, my research interests can be categorised as follows:

(a) the causes, consequences and epidemiology of obesity and the cardiometabolic (insulin-resistance) syndrome;

(b) the assessment of body composition and abdominal obesity with computed tomography and anthropometry;

© the causes of type 2 diabetes mellitus, the cardiovascular complications of the disease, its epidemiology and the importance of physical activity in its prevention and treatment;

(d) the epidemiology, prevention and treatment of childhood obesity and its adverse health effects, especially cardiovascular disease and type 2 diabetes;

(e) weight loss interventions

My current research includes studies investigating the following:

The effect of exercise training in the treatment of visceral obesity, haemodynamic abnormalities, insulin resistance, inflammation, and dyslipidaemia.

The assessment of obesity and the identification of metabolic syndrome in children and adolescents.

Magnetic resonance imaging to assess obesity and visceral fat in children.

Factors associated with arterial stiffness in children, adolescents and young adults.

Behaviour change and weight loss maintenance in adults (WILMA).

Recently Completed Research

‘The Effects of Conjugated Linoleic Acid Supplementation on Insulin Sensitivity, Endothelial Function, Platelet Aggregation and Obesity’. With Professor M. Frenneaux and Dr J Taylor of the Wales Heart Research Institute.

The Association between Physique and Atherosclerosis in Men Undergoing Coronary Angiography, in collaboration with the Department of Cardiology, University Hospital of Wales.

The use of Computed Tomography for the Determination of Abdominal Adiposity in Men, in collaboration with the Royal Glamorgan Hospital.

Research funding sources

  • British Heart Foundation.
  • National Public Health Service.
  • Bevan Foundation.
  • National Institute for Health Research (Health Technology Assessment Programme)

Areas of Expertise

Obesity, metabolic syndrome, type 2 diabetes and physical activity epidemiology
Childhood obesity and exercise
Body composition assessment



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