169363 20260225105429.0 doi 10.3390/jfmk11010087 sideral 148285 ART-2026-148285 eng Hijazo-Larrosa, Sergio Universidad de Zaragoza (orcid)0009-0002-6417-6454 Sagittal Posture Parameters of the Spine and Exposure to Awkward Postures in Mattress Manufacture Workers: An Analytical Cross-Sectional Study 2026 Background: Awkward postures are among the most prevalent ergonomic risk factors in occupational environments, including industrial settings. Conventional ergonomic risk assessments rarely address the relationship between sustained awkward postures and alterations in sagittal spinal curvatures. The primary objective of this study was to analyze the association between sagittal spinal posture parameters and exposure to awkward postures in male workers from the mattress manufacturing industry. The potential confounding effects of age, job seniority, body mass index (BMI), and physical activity level were also examined. Methods: An analytical cross-sectional study was conducted. Data collected included age, job seniority, anthropometric variables, and physical activity level. Sagittal spinal posture parameters—head alignment, thoracic kyphotic curvature, lumbar lordotic curvature, and pelvic tilt—were assessed using photogrammetry. Exposure to awkward postures was recorded according to occupational health surveillance criteria. Results: A total of 116 male workers were randomly selected. BMI showed a significant negative association with head alignment (p = 0.001), with a medium effect size (η2 = 0.090). Lower BMI values (β = −0.517) were observed in association with a more posterior head position. In addition, participants not exposed to awkward postures presented, on average, a 6.479° lower thoracic kyphotic curvature angle compared with exposed workers (p = 0.050), indicating a greater kyphotic curvature among those exposed. Conclusions: In this sample, lower BMI was associated with a more posterior head position and improved alignment with the upper trunk. Furthermore, exposure to awkward postures was related to a modest increase in thoracic kyphotic curvature, suggesting postural adaptations to occupational demands. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/B38-23R info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Lucha-López, María Orosia Universidad de Zaragoza (orcid)0000-0002-9930-3903 Monti-Ballano, Sofía Universidad de Zaragoza Barrio-Ollero, Eva Universidad de Zaragoza (orcid)0000-0001-5603-3045 Hidalgo-García, César Universidad de Zaragoza (orcid)0000-0001-7667-2178 Martínez-Jarreta, Begoña Universidad de Zaragoza (orcid)0000-0001-6469-9189 Vicente-Pina, Lucía Universidad de Zaragoza (orcid)0009-0006-7975-4594 Tricás-Moreno, José Miguel Universidad de Zaragoza (orcid)0000-0002-3583-5206 1003 443 Universidad de Zaragoza Dpto. Anatom.Histolog.Humanas Area Histología 1006 413 Universidad de Zaragoza Dpto. Fisiatría y Enfermería Área Fisioterapia 1012 613 Universidad de Zaragoza Dpto. Farmac.Fisiol.y Med.L.F. Área Medicina Legal y Forense 11, 1 (2026), 87 [19 pp.] Journal of Functional Morphology and Kinesiology 2411-5142 2550698 http://zaguan.unizar.es/record/169363/files/texto_completo.pdf Versión publicada 2383061 http://zaguan.unizar.es/record/169363/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:169363 articulos driver 2026-02-24-14:47:34 ARTICLE