RT Journal Article SR Electronic T1 Ride report: mobile app user guide 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 e4 OP e4 DO 10.1136/bjsports-2017-098364 VO 52 IS 18 A1 Porter, Anna K A1 Schwartz, Michael YR 2018 UL http://bjsm.bmj.com/content/52/18/e4.abstract AB