RT Journal Article SR Electronic T1 Notices JF Bulletin - British Association of Sport and Medicine JO Bull Br Assoc Sport Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 88 OP 95 DO 10.1136/bjsm.3.2.88 VO 3 IS 2 YR 1968 UL http://bjsm.bmj.com/content/3/2/88.abstract AB