@article{ref1,
title="Participation in collision sports and cognitive aging among Swedish twins",
journal="American journal of epidemiology",
year="2021",
author="Weiss, Jordan and Rabinowitz, Amanda R. and Deshpande, Sameer K. and Hasegawa, Raiden B. and Small, Dylan S.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="We examined the association between early-life participation in collision sports and later life cognitive health over a 28-year period in a population-based sample drawn from the longitudinal Swedish Adoption/Twin Study of Aging (1987-2014). Cognitive measures included the Mini-Mental State Examination and performance across multiple cognitive domains (e.g., global cognition, verbal ability, spatial ability, memory, processing speed). Among a sample of 660 adults (mean age at baseline 62.8 years [range: 50-88]; 58.2% female) who contributed 10,944 person-years of follow-up, there were 450 cases of cognitive impairment (crude rate: 41.1/1,000 person-years). Early-life participation in collision sports was not significantly associated with cognitive impairment at baseline nor its onset over a 28-year period in a time-to-event analysis which accounted for the semi-competing risk of death. Furthermore, growth curve models revealed no association between early-life participation in collision sports and the level of or change in trajectories of cognition across multiple domains overall nor in gender-stratified models. We discuss the long-term implications of adolescent participation in collision sports on cognitive health.<p /> <p>Language: en</p>",
language="en",
issn="0002-9262",
doi="10.1093/aje/kwab177",
url="http://dx.doi.org/10.1093/aje/kwab177"
}