Use it or lose it: a four-year follow-up assessing whether physical activity near one's capacity reduces the risk of functional decline among older adults. - Löppönen, Antti; Lindeman, Katja; Palmberg, Lotta; Van Roie, Evelien; Delecluse, Christophe; Portegijs, Erja; Rantanen, Taina; Rantalainen, Timo; Karavirta, Laura (European Review of Aging & Physical Activity, 2025)