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 764 OP 764 DO 10.1136/bjsm.2007.039321corr1 VO 43 IS 10 YR 2009 UL http://bjsm.bmj.com/content/43/10/764.2.abstract AB