[1] Glasgow Caledonian Univ, Inst Allied Hlth Res, Sch Hlth & Life Sci, Glasgow, Lanark, Scotland
[2] Int Ageing, Fac Hlth & Life Sci, Dept Publ Hlth & Well Being, Newcastle Upon Tyne, Tyne & Wear, England
[3] Newcastle Univ, Inst Hlth & Soc, Newcastle Upon Tyne, Tyne & Wear, England
[4] Northumbria Univ, Fac Hlth & Life Sci, Dept Publ Hlth & Well Being, Newcastle Upon Tyne, Tyne & Wear, England
[5] Northumbria Univ, Dept Psychol, Newcastle Upon Tyne, Tyne & Wear, England
[6] Northumbria Univ, Dept Sport Exercise & Rehabil, Newcastle Upon Tyne, Tyne & Wear, England
[7] Glasgow Caledonian Univ, Inst Allied Hlth Res, Sch Hlth & Life Sci, Glasgow, Lanark, Scotland
[8] Northumbria Univ, Dept Healthcare, Newcastle Upon Tyne, Tyne & Wear, England
[9] Newcastle Univ Newcastle upon Tyne, Newcastle Clin Trials Unit, Newcastle Upon Tyne, Tyne & Wear, England