{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T18:54:04Z","timestamp":1767898444109,"version":"3.49.0"},"reference-count":28,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2023,4,20]],"date-time":"2023-04-20T00:00:00Z","timestamp":1681948800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2023,9]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>Lumbopelvic pain (LPP) is a very common cause of discomfort during pregnancy, but its etiology remains unclear. The association between abdominal muscle thickness and LPP in pregnant women has not been studied extensively, despite the significant abdominal changes that occur during pregnancy. This study aimed to examine the relationship between abdominal muscle thickness and LPP in pregnant women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>In this study, 49 pregnant women in their second trimester participated. The intensity of LPP was assessed using a numerical rating scale. Ultrasound imaging was used to measure the thickness of abdominal muscles, including the rectus abdominis, external oblique, internal oblique, and transversus abdominis muscles. Participants were classified into two groups, the LPP group and non\u2010LPP group, and the abdominal muscle thickness was compared between the two groups. The statistical significance level was set at <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There were 24 and 25 participants in the LPP and non\u2010LPP groups, respectively. Internal oblique (IO) thickness was significantly thinner in the LPP group than in the non\u2010LPP group (5.4\u2009\u00b1\u20090.2\u2009mm versus 6.1\u2009\u00b1\u20090.2\u2009mm; <jats:italic>P<\/jats:italic>\u2009=\u2009.042). Multivariate logistic regression analysis showed that IO thickness was significantly associated with LPP (odds ratio, 0.516; 95% confidence interval, 0.284\u20130.935; <jats:italic>P<\/jats:italic>\u2009=\u2009.019).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study suggested that LPP in second trimester pregnancy might be related to IO thickness. Further longitudinal studies are needed to understand the role of this muscle as an LPP risk factor for pregnant women.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.16232","type":"journal-article","created":{"date-parts":[[2023,4,20]],"date-time":"2023-04-20T19:46:38Z","timestamp":1682019998000},"page":"2107-2114","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Ultrasound Assessment of Abdominal Muscle Thickness With and Without Lumbopelvic Pain in Pregnant Women"],"prefix":"10.1002","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1791-6512","authenticated-orcid":false,"given":"Rika","family":"Kawabe","sequence":"first","affiliation":[{"name":"Department of Physical Therapy Human Health Sciences, Graduate School of Medicine, Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Saori","family":"Morino","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation Science School of Medicine, Osaka Metropolitan University  Osaka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mika","family":"Ishihara","sequence":"additional","affiliation":[{"name":"Women's Pilates Association  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kanako","family":"Shimoura","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy Human Health Sciences, Graduate School of Medicine, Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chiaki","family":"Yamashiro","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy Human Health Sciences, Graduate School of Medicine, Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kaho","family":"Negoro","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy Human Health Sciences, Graduate School of Medicine, Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chang Yu","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy Human Health Sciences, Graduate School of Medicine, Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masumi","family":"Koshi","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynecology Medical Corporation Kishokai  Inazawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naoko","family":"Kato","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynecology Medical Corporation Kishokai  Inazawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroko","family":"Hatanaka","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynecology Medical Corporation Kishokai  Inazawa 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