PT - JOURNAL ARTICLE AU - Sattler, Matteo C AU - Ainsworth, Barbara E AU - Andersen, Lars B AU - Foster, Charlie AU - Hagströmer, Maria AU - Jaunig, Johannes AU - Kelly, Paul AU - Kohl III, Harold W AU - Matthews, Charles E AU - Oja, Pekka AU - Prince, Stephanie A AU - van Poppel, Mireille N M TI - Physical activity self-reports: past or future? AID - 10.1136/bjsports-2020-103595 DP - 2021 Aug 01 TA - British Journal of Sports Medicine PG - 889--890 VI - 55 IP - 16 4099 - http://bjsm.bmj.com/content/55/16/889.short 4100 - http://bjsm.bmj.com/content/55/16/889.full SO - Br J Sports Med2021 Aug 01; 55