RT Journal Article SR Electronic T1 Bright spots, physical activity investments that work: Workplace Challenge 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 bjsports-2017-097716 DO 10.1136/bjsports-2017-097716 A1 Emma J Adams A1 Hayley Musson A1 Andrew Watson A1 Lee Mason YR 2017 UL http://bjsm.bmj.com/content/early/2017/10/27/bjsports-2017-097716.abstract AB