RT Journal Article SR Electronic T1 Mrs. Gabrielle Irene Jones 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 100 OP 100 DO 10.1136/bjsm.8.2-3.100-a VO 8 IS 2-3 A1 Robson, H. Evans YR 1974 UL http://bjsm.bmj.com/content/8/2-3/100.2.abstract AB