RT Journal Article SR Electronic T1 Correction JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 703 OP 703 DO 10.1136/bjsm.2009.065284corr1 VO 44 IS 10 YR 2010 UL http://bjsm.bmj.com/content/44/10/703.abstract AB