{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T10:36:38Z","timestamp":1788863798977,"version":"build-2803163510"},"reference-count":21,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T00:00:00Z","timestamp":1762905600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T00:00:00Z","timestamp":1762905600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R01 HD102477"],"award-info":[{"award-number":["R01 HD102477"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Obesity"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>This study aimed to\u00a0identify physical activity trajectories through pregnancy and examine associations with postpartum weight retention.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We included pregnancies from one health care system from 2009 to 2020. Data were collected from electronic\u00a0health\u00a0records and physical activity from self\u2010report before pregnancy and during each trimester. High, medium, and low physical activity\u00a0groups were identified using discrete trajectory analysis. The outcome was the percentage of postpartum weight\u00a0retention in the first year after pregnancy, measured as postpartum BMI as a percentage of prepregnancy BMI. All postpartum BMI\u00a0measures from 21 through 365\u2009days were analyzed using mixed effects regression models using R version\u00a04.4.1.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Among 58,828 pregnancies, 54.7% were in Hispanic participants, 24.8% White, 10.3% Asian\/Pacific Islander, 9.0% Black, and 1.3% other. Mean BMI after delivery was 105.2%\u2009\u00b1\u20098.9% of prepregnancy BMI. Physical activity trajectories were high (3.4%), medium (64.9%), and low (31.6%). Compared with the low and medium physical activity trajectories, individuals in the high physical activity trajectory had greater odds of achieving prepregnancy BMI (OR: 1.314; 95% CI: 1.172\u20131.472 and OR: 1.285; 95% CI: 1.149\u20131.436, respectively).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Individuals with high physical activity from preconception through pregnancy have less weight retention at 360\u2009days post partum than women with lower physical activity.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/oby.70080","type":"journal-article","created":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T03:13:16Z","timestamp":1763003596000},"page":"491-498","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Association of Physical Activity During Pregnancy and Postpartum Weight Retention: A Retrospective Cohort Study"],"prefix":"10.1002","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8335-7851","authenticated-orcid":false,"given":"Deborah Rohm","family":"Young","sequence":"first","affiliation":[{"name":"Department of Research &amp; Evaluation Kaiser Permanente Southern California  Pasadena California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimberly K.","family":"Vesco","sequence":"additional","affiliation":[{"name":"Center for Health Research Kaiser Permanente Northwest  Portland Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0802-9794","authenticated-orcid":false,"given":"Caryn E.","family":"Oshiro","sequence":"additional","affiliation":[{"name":"Center for Integrated Health Care Research Kaiser Permanente Hawaii  Honolulu Hawaii USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Margo A.","family":"Sidell","sequence":"additional","affiliation":[{"name":"Department of Research &amp; Evaluation Kaiser Permanente Southern California  Pasadena California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4067-3432","authenticated-orcid":false,"given":"Erin","family":"LeBlanc","sequence":"additional","affiliation":[{"name":"Center for Health Research Kaiser Permanente Northwest  Portland Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalie","family":"Rosenquist","sequence":"additional","affiliation":[{"name":"Institute for Health Policy Studies, University of California, San Francisco  San Francisco California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9469-2188","authenticated-orcid":false,"given":"Meghan","family":"Mayhew","sequence":"additional","affiliation":[{"name":"Center for Health Research Kaiser Permanente Northwest  Portland Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Botao","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Research &amp; Evaluation Kaiser Permanente Southern California  Pasadena California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0368-0545","authenticated-orcid":false,"given":"Janne","family":"Boone\u2010Heinonen","sequence":"additional","affiliation":[{"name":"Institute for Health Policy Studies, University of California, San Francisco  San Francisco California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,11,12]]},"reference":[{"key":"e_1_2_9_2_1","volume-title":"Weight Gain During Pregnancy: Reexamining the Guidelines","author":"IOM (Institute of Medicine)","year":"2009"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/oby.2012.41"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12933\u2010024\u201002184\u20104"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pmed.1003486"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0954422418000070"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000003772"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000001941"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1123\/jpah.2022\u20100642"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1123\/jpah.2022\u20100630"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpubh.2019.00294"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1038\/ijo.2013.183"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/osp4.597"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.amepre.2021.01.012"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1463423615000390"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwad130"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10995\u2010014\u20101593\u2010x"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph17031105"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1177\/17455057231166822"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1093\/jn\/nxaa104"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.amepre.2016.05.023"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1093\/oxfordjournals.epirev.a018038"}],"container-title":["Obesity"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/oby.70080","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/oby.70080","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/oby.70080","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T21:46:44Z","timestamp":1773006404000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/oby.70080"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11,12]]},"references-count":21,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2026,2]]}},"alternative-id":["10.1002\/oby.70080"],"URL":"https:\/\/doi.org\/10.1002\/oby.70080","archive":["Portico"],"relation":{},"ISSN":["1930-7381","1930-739X"],"issn-type":[{"value":"1930-7381","type":"print"},{"value":"1930-739X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11,12]]},"assertion":[{"value":"2025-07-01","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-10-03","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-12","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}