RT Journal Article SR Electronic T1 Stretching before exercise: an evidence based approach 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 324 OP 325 DO 10.1136/bjsm.34.5.324 VO 34 IS 5 A1 Ian Shrier YR 2000 UL http://bjsm.bmj.com/content/34/5/324.abstract AB