J Sports Sci. 2024 Aug 27:1-9. doi: 10.1080/02640414.2024.2386490. Online ahead of print. ABSTRACT We investigated the longitudinal associations between sports participation patterns in youth and physical activity (PA) in adulthood. PA was self-reported triannually between ages 9-18 (n = 2550, 52% females) and measured by accelerometers in mid-adulthood (n =…