The effects of a physical and cognitive training intervention vs. physical training alone on older adults’ physical activity: A randomized controlled trial with extended follow-up during COVID-19

Tiina Savikanga, Timo Törmäkangas, Anna Tirkkonen, Markku Alen, Roger A. Fielding, Miia Kivipelto, Timo Rantalainen, Anna Stigsdotter Neely, Sarianna Sipilä