RT Journal Article SR Electronic T1 Twenty-metre shuttle run: (mis)representation, (mis)interpretation and (mis)use 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 1199 OP 1199 DO 10.1136/bjsports-2018-100082 VO 53 IS 19 A1 Armstrong, Neil A1 Welsman, Jo YR 2019 UL http://bjsm.bmj.com/content/53/19/1199.abstract AB