RT Journal Article SR Electronic T1 Supervised walking training improves maximum and pain-free walking distances in people with intermittent claudication 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 1130 OP 1132 DO 10.1136/bjsports-2013-092322 VO 48 IS 14 A1 Sandeep Gupta A1 Mark R Elkins YR 2014 UL http://bjsm.bmj.com/content/48/14/1130.abstract AB