{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T03:42:37Z","timestamp":1793418157385,"version":"4.5.0"},"reference-count":60,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2022,8,25]],"date-time":"2022-08-25T00:00:00Z","timestamp":1661385600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000026","name":"National Institute on Drug Abuse","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000026","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Euro Eating Disorders Rev"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>Anorexia nervosa (AN) is commonly experienced alongside difficulties of emotion regulation (ER). Previous works identified physical activity (PA) as a mechanism for AN sufferers to achieve desired affective states, with evidence towards mitigation of negative affect. However, temporal associations of PA with specific emotional state outcomes are unknown.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>Using lag\u2010ensemble machine learning and feature importance analyses, 888 affect\u2010based ecological momentary assessments across <jats:italic>N =<\/jats:italic> 75 adolescents with AN (<jats:italic>N =<\/jats:italic> 44) and healthy controls (<jats:italic>N =<\/jats:italic> 31) were analysed to explore significance of past PA, measured through passively collected wrist\u2010worn actigraphy, with subsequent self\u2010report momentary affect change across 9 affect constructs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among AN adolescents, later lags (\u22652.5\u00a0h) were important in predicting change across negative emotions (hostility, sadness, fear, guilt). AN\u2010specific model performance on held\u2010out test data revealed the holistic \u201cnegative affect\u201d construct as significantly predictable. Only joviality and self\u2010assurance, both positively\u2010valenced constructs, were significantly predictable among healthy\u2010control\u2010specific models.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>Results recapitulated previous findings regarding the importance of PA in negative ER for AN individuals. Moreover, PA was found to play a uniquely prominent role in predicting negative affect 4.5\u20136\u00a0h later among AN adolescents. Future research into the PA\u2010ER dynamic will benefit from targeting specific negative emotions across greater temporal scales.<\/jats:p><\/jats:sec>","DOI":"10.1002\/erv.2949","type":"journal-article","created":{"date-parts":[[2022,8,25]],"date-time":"2022-08-25T11:16:49Z","timestamp":1661426209000},"page":"147-165","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["A machine learning investigation into the temporal dynamics of physical activity\u2010mediated emotional regulation in adolescents with anorexia nervosa and healthy controls"],"prefix":"10.1002","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6995-9223","authenticated-orcid":false,"given":"Damien","family":"Lekkas","sequence":"first","affiliation":[{"name":"Center for Technology and Behavioral Health Geisel School of Medicine Dartmouth College  Lebanon New Hampshire USA"},{"name":"Quantitative Biomedical Sciences Program Dartmouth College  Hanover New Hampshire USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3554-8546","authenticated-orcid":false,"given":"Joseph A.","family":"Gyorda","sequence":"additional","affiliation":[{"name":"Center for Technology and Behavioral Health Geisel School of Medicine Dartmouth College  Lebanon New Hampshire USA"},{"name":"Quantitative Biomedical Sciences Program Dartmouth College  Hanover New Hampshire USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8832-4741","authenticated-orcid":false,"given":"Nicholas C.","family":"Jacobson","sequence":"additional","affiliation":[{"name":"Center for Technology and Behavioral Health Geisel School of Medicine Dartmouth College  Lebanon New Hampshire USA"},{"name":"Quantitative Biomedical Sciences Program Dartmouth College  Hanover New Hampshire USA"},{"name":"Department of Biomedical Data Science Geisel School of Medicine Dartmouth College  Lebanon New Hampshire USA"},{"name":"Department of Psychiatry Geisel School of Medicine Dartmouth College  Hanover New Hampshire USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,8,25]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890425596"},{"issue":"1","key":"e_1_2_10_3_1","first-page":"139","article-title":"The relationship between anger and other correlates of eating disorders in women","volume":"14","author":"Aruguete M. 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