[1] Manchester Metropolitan Univ, Dept Sport & Exercise Sci, Manchester, Lancs, England
[2] Univ Nottingham, Sch Life Sci, Nottingham, England
[3] Salford Royal NHS Fdn Trust, Dept Diabet & Endocrinol, Manchester, Lancs, England
[4] Univ Oxford, Oxford Ctr Diabet Endocrinol & Metab, Oxford, England
[5] Newcastle Univ, Populat Hlth Sci Inst, Newcastle Upon Tyne, Tyne & Wear, England