RT Journal Article SR Electronic T1 Prof. A. V. Hill 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 150 OP 150 DO 10.1136/bjsm.11.3.150 VO 11 IS 3 A1 Robson, H. E. YR 1977 UL http://bjsm.bmj.com/content/11/3/150.1.abstract AB