Effects of a Cognitive Training With and Without Additional Physical Activity in Healthy Older Adults: A Follow-Up 1 Year After a Randomized Controlled Trial oleh Elke Kalbe, Mandy Roheger, Kay Paluszak, Julia Meyer, Jutta Becker, Gereon R. Fink, Gereon R. Fink, Juraj Kukolja, Andreas Rahn, Florian Szabados, Brunhilde Wirth, Josef Kessler