Editors' Pick Physical Activity and Trajectory of Cognitive Change in Older Persons: Mayo Clinic Study of Aging. Krell-Roesch J, Syrjanen JA, Bezold J, Trautwein S, Barisch-Fritz B, Boes K, Woll A, Forzani E, Kremers WK, Machulda MM, et al. J Alzheimers Dis. 2021 Jan 5; 79(1):377-388. PMID: 33216032. Abstract