1. School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham , Edgbaston, Birmingham, UK
2. Department of Rheumatology, Russells Hall Hospital, The Dudley Group NHS Foundation Trust , Dudley, UK
3. School of Psychology, Faculty of Health and Medical Sciences, University of Surrey , Surrey, UK
4. Department of Nutrition and Dietetics, School of Physical Education, Sport Science and Dietetics, University of Thessaly , Volos, Greece