National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK. NIHR Leicester Biomedical Research Centre, University Hospitals of Leicester NHS Trust and University of Leicester, Leicester, UK. Clinical Nutrition Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia. Diabetes Research Centre, University of Leicester, Leicester, UK. Department of Health Sciences, University of Leicester, Leicester, UK. Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK. NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and The University of Nottingham, Nottingham, UK.