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Our aim was to examine whether adolescent leisure-time physical activity is prospectively associated with eating disorders in adolescence and young adulthood.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Finnish twins born in 1983\u20131987 reported their physical activity frequency at ages 12, 14, and 17. A subsample of participants underwent structured, retrospective interviews for eating disorders at the mean age of 22.4\u00a0years. Associations between female twins\u2019 physical activity and future eating disorders (571\u2013683 twins\/wave) were investigated with the Cox proportional hazards model. To illustrate the physical activity similarity of the co-twins in a twin pair, we used cross-tabulation of eating disorder\u2013discordant twin pairs (13\u201324 pairs\/wave).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>After adjusting for several covariates, we found no statistically significant longitudinal association between physical activity and eating disorders. This applied when all eating disorders were combined but also when assessed separately as restrictive and non-restrictive eating disorders. Co-twins\u2019 physical activity in adolescence tended to be similar irrespective of their future eating disorder, supporting the results of the regression analysis.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>We observed no evidence of adolescent physical activity frequency being prospectively associated with eating disorders in female twins. Further longitudinal studies with larger sample sizes and more detailed physical activity data are needed.<\/jats:p>\n                <jats:p><jats:italic>Level of evidence<\/jats:italic>: III,\u00a0evidence obtained from cohort or case\u2013control analytic studies.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s40519-024-01670-8","type":"journal-article","created":{"date-parts":[[2024,6,8]],"date-time":"2024-06-08T09:02:07Z","timestamp":1717837327000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Adolescent leisure-time physical activity and eating disorders: a longitudinal population-based twin study"],"prefix":"10.1007","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4615-7129","authenticated-orcid":false,"given":"Nadja","family":"Anis","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6713-7488","authenticated-orcid":false,"given":"Anna","family":"Keski-Rahkonen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4773-2925","authenticated-orcid":false,"given":"Sara","family":"Kaartinen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5065-2566","authenticated-orcid":false,"given":"Yasmina","family":"Sil\u00e9n","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3716-2455","authenticated-orcid":false,"given":"Jaakko","family":"Kaprio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2873-4263","authenticated-orcid":false,"given":"Sari","family":"Aaltonen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,6,8]]},"reference":[{"key":"1670_CR1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.23236","author":"Y Sil\u00e9n","year":"2020","unstructured":"Sil\u00e9n Y, Sipil\u00e4 PN, Raevuori A et al (2020) DSM-5 eating disorders among adolescents and young adults in Finland: a public health concern. 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