{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T17:54:54Z","timestamp":1785434094348,"version":"3.56.0"},"reference-count":41,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2024,1,31]],"date-time":"2024-01-31T00:00:00Z","timestamp":1706659200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Clin Rehabil"],"published-print":{"date-parts":[[2024,4]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To identify differences in the muscle mechanical properties of the pelvic floor (PF) and lumbar paravertebral (LP) muscles between young nulliparous and uni\/multiparous women. Secondarily, specific behaviors, depending on the presence or absence or urinary incontinence (UI), were also researched.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Case\u2013control study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>Higher education institution.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>One hundred young women participated, divided into two groups depending on whether they had vaginal birth (nulliparous or uni\/multiparous). Each group included women with and without UI.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Main measures<\/jats:title>\n                    <jats:p>A muscle mechanical properties (tone, stiffness, decrement\u2014inverse of elasticity\u2014, and viscoelastic properties: relaxation and creep) assessment of the PF and LP muscles were performed with a hand-held tonometer.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Tone and stiffness of both sides of the PF presented group by UI interaction ( p\u2009&lt;\u20090.05), with uni\/multiparous women with UI showing higher tone and stiffness compared to multiparous women without UI. In LP muscles, uni\/multiparous women showed greater tone and stiffness on the right and left sides [\u22122.57\u2005Hz (95% confidence interval \u22124.42,\u22120.72) and \u221279.74\u2005N\/m (\u2212143.52,\u221215.97); \u22122.20\u2005Hz (\u22123.82,\u22120.58) and \u221281.30\u2005N\/m (\u2212140.66-,21.95), respectively], as well as a decrease in viscoelastic properties compared to nulliparous women [relaxation: 2.88\u2005ms (0.31,5.44); creep: 0.15 (0.01,0.30); relaxation: 2.69\u2005ms (0.13,5.25); creep: 0.14 (0,0.28), respectively].<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Vaginal birth and UI have a differential influence on the muscle mechanical properties of the PF and LP muscles. The determination of muscle mechanical properties by externally applied hand-held tonometry improves the knowledge of the lumbopelvic status, with applicability in clinical and research fields.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/02692155231224058","type":"journal-article","created":{"date-parts":[[2024,1,31]],"date-time":"2024-01-31T15:57:30Z","timestamp":1706716650000},"page":"558-568","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Influence of vaginal birth on lumbopelvic muscle mechanical properties on urinary incontinence"],"prefix":"10.1177","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-5095-9188","authenticated-orcid":false,"given":"Mar\u00eda Teresa","family":"Garz\u00f3n-Alfaro","sequence":"first","affiliation":[{"name":"Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of C\u00f3rdoba, C\u00f3rdoba, 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Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Cristina","family":"Carmona-P\u00e9rez","sequence":"additional","affiliation":[{"name":"Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of C\u00f3rdoba, C\u00f3rdoba, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan Luis","family":"Garrido-Castro","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Numerical Analysis, Rabanales Campus, University of C\u00f3rdoba, C\u00f3rdoba, Spain"},{"name":"GC05 Systemic and chronic inflammatory autoimmune diseases of the locomotor system and connective tissue, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), C\u00f3rdoba, 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