{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T12:40:33Z","timestamp":1777466433793,"version":"3.51.4"},"reference-count":47,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2025,8,26]],"date-time":"2025-08-26T00:00:00Z","timestamp":1756166400000},"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":["Journal of Back and Musculoskeletal Rehabilitation"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>This study aimed to investigate the effects of different sitting postures and prolonged sitting on lumbosacral nerve root function by measuring the amplitude of the soleus (SOL) Hoffmann reflex (H-reflex).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This study included 30 healthy individuals who were selected through convenience sampling and divided according to daily sitting duration over the past year into a prolonged sitting group (\u22656\u2005h\/day) and a control group (\u22644\u2005h\/day). The SOL H-reflex amplitude was recorded in erect, slumped, slouched, and supine positions. Ischial pressure was evaluated in all sitting postures to assess spinal loading.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Slouched sitting significantly lowered ischial pressure (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">&lt;<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.0005<\/jats:italic>\n                      ) and produced higher H-reflex amplitudes (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">&lt;<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.0005<\/jats:italic>\n                      ), which were not significantly different from those in the supine position (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">=<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.362<\/jats:italic>\n                      ). In contrast, (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">&lt;<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.0005<\/jats:italic>\n                      ) erect and slumped (\n                      <jats:italic toggle=\"yes\">p\u2009&lt;\u20090.0005<\/jats:italic>\n                      ) postures showed increased ischial pressure and significantly reduced H-reflex amplitudes (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">&lt;<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.0005<\/jats:italic>\n                      for both postures). Participants in the prolonged sitting group demonstrated significantly lower SOL H-reflex amplitudes than those in the control group (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">=<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.008, \u03b7p\u00b2<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">=<\/jats:italic>\n                      \u2009\n                      <jats:italic toggle=\"yes\">0.23<\/jats:italic>\n                      ).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Various sitting postures and durations exert different effects on the lumbosacral spine and nerve roots. Slouched sitting reduces spinal stress and lower nerve root compression compared to erect and slumped seated positions. Extended sitting duration may partially compress the lumbosacral nerve root, thereby potentially contributing to postural low back pain over time.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10538127251371635","type":"journal-article","created":{"date-parts":[[2025,8,26]],"date-time":"2025-08-26T12:23:59Z","timestamp":1756211039000},"page":"285-296","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Effects of sitting posture and duration on lumbosacral nerve root function: A case-control study"],"prefix":"10.1177","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5003-7501","authenticated-orcid":false,"given":"Hamad S","family":"Al Amer","sequence":"first","affiliation":[{"name":"Department of Health Rehabilitation Sciences, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5859-7258","authenticated-orcid":false,"given":"Shahul Hameed","family":"Pakkir Mohamed","sequence":"additional","affiliation":[{"name":"Department of Health Rehabilitation Sciences, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sharon L","family":"Olson","sequence":"additional","affiliation":[{"name":"School of Physical Therapy, Texas Woman's University, Houston, TX, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,8,26]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(20)30925-9"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/1348-9585.12155"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jphys.2019.04.010"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-006-0143-7"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.3233\/WOR-203292"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph15081678"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.3233\/BMR-200087"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-004-0713-5"},{"key":"e_1_3_2_10_2","first-page":"457","article-title":"Comparison of in vivo intradiscal pressure between sitting and standing in human lumbar spine: a systematic review and meta-analysis","volume":"12","author":"Li JQ","year":"2022","unstructured":"Li JQ, Kwong WH, Chan YL, et al. 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