PT - JOURNAL ARTICLE AU - Matteo C Sattler AU - Barbara E Ainsworth AU - Lars B Andersen AU - Charlie Foster AU - Maria Hagströmer AU - Johannes Jaunig AU - Paul Kelly AU - Harold W Kohl III AU - Charles E Matthews AU - Pekka Oja AU - Stephanie A Prince AU - Mireille N M van Poppel TI - Physical activity self-reports: past or future? AID - 10.1136/bjsports-2020-103595 DP - 2021 Feb 03 TA - British Journal of Sports Medicine PG - bjsports-2020-103595 4099 - http://bjsm.bmj.com/content/early/2021/02/02/bjsports-2020-103595.short 4100 - http://bjsm.bmj.com/content/early/2021/02/02/bjsports-2020-103595.full