[1] Univ Nottingham, Inst Mental Hlth, Nottingham, England
[2] UCL, Div Psychiat, 149 Tottenham Court Rd, London W1T 7NF, England
[3] Univ Hull, Fac Hlth Sci, Sch Hlth & Social Work, Dept Psychol Hlth & Well Being, Kingston Upon Hull, N Humberside, England
[4] UCL, Dept Appl Hlth Res, London, England
[5] UCL, Dept Clin Educ & Hlth Psychol, London, England
[6] Loughborough Univ, Natl Ctr Sports & Exercise Med, Loughborough, Leics, England
[7] Univ Bradford, Ctr Appl Dementia Studies, Bradford, W Yorkshire, England