No significant association between self-reported physical activity and brain volumes in women and men from five European cohorts

N Naiara Demnitz W William F. C. Baaré J Julia Binnewies A Andreas M. Brandmaier (Center for Lifespan Psychology, Max Planck Institute for Human Development) A Anders M. Fjell (Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo) A Anne T. Gates R Rogier Kievit M Michael Kjaer K Kathrine Skak Madsen L Lars Nyberg (Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo) S Sara Pudas H Hartwig R. Siebner S Sana Suri � Øystein Sørensen (Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo) K Kristine Beate Walhovd K Klaus P. Ebmeier C Carl-Johan Boraxbekk