{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T16:51:23Z","timestamp":1792687883019,"version":"4.5.0"},"reference-count":45,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2023,9,2]],"date-time":"2023-09-02T00:00:00Z","timestamp":1693612800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"ANID Chile under the Fondef IdeA Project","award":["20I10297"],"award-info":[{"award-number":["20I10297"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In the search to enhance ergonomic risk assessments for upper limb work-related activities, this study introduced and validated the efficiency of an inertial motion capture system, paired with a specialized platform that digitalized the OCRA index. Conducted in a semi-controlled environment, the proposed methodology was compared to traditional risk classification techniques using both inertial and optical motion capture systems. The inertial method encompassed 18 units in a Bluetooth Low Energy tree topology network for activity recording, subsequently analyzed for risk using the platform. Principal outcomes emphasized the optical system\u2019s preeminence, aligning closely with the conventional technique. The optical system\u2019s superiority was further evident in its alignment with the traditional method. Meanwhile, the inertial system followed closely, with an error margin of just \u00b10.098 compared to the optical system. Risk classification was consistent across all systems. The inertial system demonstrated strong performance metrics, achieving F1-scores of 0.97 and 1 for \u201crisk\u201d and \u201cno risk\u201d classifications, respectively. Its distinct advantage of portability was reinforced by participants\u2019 feedback on its user-friendliness. The results highlight the inertial system\u2019s potential, mirroring the precision of both traditional and optical methods and achieving a 65% reduction in risk assessment time. This advancement mitigates the need for intricate video setups, emphasizing its potential in ergonomic assessments.<\/jats:p>","DOI":"10.3390\/s23177623","type":"journal-article","created":{"date-parts":[[2023,9,4]],"date-time":"2023-09-04T02:59:55Z","timestamp":1693796395000},"page":"7623","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Utilizing Motion Capture Systems for Instrumenting the OCRA Index: A Study on Risk Classification for Upper Limb Work-Related Activities"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9101-0383","authenticated-orcid":false,"given":"Pablo","family":"Aqueveque","sequence":"first","affiliation":[{"name":"Departamento de Ingenier\u00eda El\u00e9ctrica, Facultad de Ingenier\u00eda, Universidad de Concepci\u00f3n, Concepci\u00f3n 4070386, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guisella","family":"Pe\u00f1a","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda El\u00e9ctrica, Facultad de Ingenier\u00eda, Universidad de Concepci\u00f3n, Concepci\u00f3n 4070386, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuel","family":"Guti\u00e9rrez","sequence":"additional","affiliation":[{"name":"Departamento de Ergonom\u00eda, Facultad de Ciencias Biol\u00f3gicas, Universidad de Concepci\u00f3n, Concepci\u00f3n 4070386, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6563-2955","authenticated-orcid":false,"given":"Britam","family":"G\u00f3mez","sequence":"additional","affiliation":[{"name":"Ingenier\u00eda Biom\u00e9dica, Facultad de Ingenier\u00eda, Universidad de Santiago de Chile, Santiago 8320000, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3100-187X","authenticated-orcid":false,"given":"Enrique","family":"Germany","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda El\u00e9ctrica, Facultad de Ingenier\u00eda, Universidad de Concepci\u00f3n, Concepci\u00f3n 4070386, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gustavo","family":"Retamal","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda El\u00e9ctrica, Facultad de Ingenier\u00eda, Universidad de Concepci\u00f3n, Concepci\u00f3n 4070386, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9333-3036","authenticated-orcid":false,"given":"Paulina","family":"Ortega-Bastidas","sequence":"additional","affiliation":[{"name":"Departamento de Kinesiolog\u00eda, Facultad de Medicina, Universidad de Concepci\u00f3n, Concepci\u00f3n 4030000, Chile"},{"name":"Programa de Doctorado en Ciencias de la Salud, Escuela Internacional de Doctorado, Universidad Rey Juan Carlos, 28943 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"374","DOI":"10.1136\/oemed-2016-103943","article-title":"Work-related musculoskeletal disorders among construction workers in the United States from 1992 to 2014","volume":"74","author":"Wang","year":"2017","journal-title":"Occup. Environ. Med."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Roja, Z., Kalkis, H., Roja, I., and Zalkalns, J. (2017, January 17\u201321). Work related musculoskeletal disorders (WRMSD) in construction workers and main causes. Proceedings of the AHFE 2017 International Conference on Physical Ergonomics and Human Factors (Advances in Physical Ergonomics and Human Factors), Los Angeles, CA, USA.","DOI":"10.1007\/978-3-319-60825-9_31"},{"key":"ref_3","unstructured":"Services, H. (1997). Musculoskeletal disorders and workplace factors. A Critical Review of Epidemiologic Evidence for Work Related Musculoskeletal Disorders of the Neck, Upper Extremity and Low Back, NIOSH."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/j.proeng.2011.11.142","article-title":"A literature review of ergonomics risk factors in construction industry","volume":"20","author":"Jaffar","year":"2011","journal-title":"Procedia Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1177\/0018720819860683","article-title":"Relationships and mechanisms between occupational risk factors and distal upper extremity disorders","volume":"63","author":"Keir","year":"2021","journal-title":"Hum. Factors"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1080\/00140139.2016.1208848","article-title":"Musculoskeletal disorders as a fatigue failure process: Evidence, implications and research needs","volume":"60","author":"Gallagher","year":"2017","journal-title":"Ergonomics"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"103075","DOI":"10.1016\/j.apergo.2020.103075","article-title":"Shoulder pain among male industrial workers: Validation of a conceptual model in two independent French working populations","volume":"85","author":"Bodin","year":"2020","journal-title":"Appl. Ergon."},{"key":"ref_8","unstructured":"Centers for Disease Control & Prevention (2023, February 16). Work-Related Musculoskeletal Disorders & Ergonomics, Available online: https:\/\/www.cdc.gov\/workplacehealthpromotion\/health-strategies\/musculoskeletal-disorders\/."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1097\/PXH.0000000000000003","article-title":"Epidemiology of work-related musculoskeletal disorders","volume":"1","author":"Bonfiglioli","year":"2022","journal-title":"Curr. Opin. Epidemiol. Public Health"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"623","DOI":"10.3233\/WOR-182770","article-title":"Work-related upper extremity musculoskeletal disorders in the United States: 2006, 2009, and 2014 National Health Interview Survey","volume":"60","author":"Ma","year":"2018","journal-title":"Work"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.cie.2014.08.018","article-title":"Innovative real-time system to integrate ergonomic evaluations into warehouse design and management","volume":"77","author":"Battini","year":"2014","journal-title":"Comput. Ind. Eng."},{"key":"ref_12","unstructured":"Kuruganti, U. (2019). Bioelectronics and Medical Devices, Elsevier."},{"key":"ref_13","unstructured":"Pimparel, A., Madaleno, S., Ollay, C., and Gabriel, A. (2022). Occupational and Environmental Safety and Health III, Springer."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"314","DOI":"10.2486\/indhealth.2016-0191","article-title":"Musculoskeletal disorders: OWAS review","volume":"55","year":"2017","journal-title":"Ind. Health"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1016\/j.matpr.2021.07.482","article-title":"Study of the ergonomic risk in operators of an assembly line using the RULA method in real working conditions through the application of a commercial sensor","volume":"49","author":"Jara","year":"2022","journal-title":"Mater. Today Proc."},{"key":"ref_16","unstructured":"Borg, G.A. (1962). Physical Performance and Perceived Exertion, Lund University."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1016\/0003-6870(77)90164-8","article-title":"Correcting working posture in industry. A practical method or analysis","volume":"8","author":"Karlu","year":"1977","journal-title":"App. Ergon."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/0003-6870(93)90080-S","article-title":"RULA: A survey method for the investigation of work-related upper limb disorders","volume":"24","author":"McAtamney","year":"1993","journal-title":"Appl. Ergon."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1016\/S0003-6870(99)00039-3","article-title":"Rapid entire body assessment (REBA)","volume":"31","author":"Hignett","year":"2000","journal-title":"Appl. Ergon."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Colombini, D., and Occhipinti, E. (2016). Risk Analysis and Management of Repetitive Actions: A Guide for Applying the OCRA System (Occupational Repetitive Actions), CRC Press.","DOI":"10.1201\/9781315382678"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"817","DOI":"10.1080\/00140130210159977","article-title":"Usability of the revised NIOSH lifting equation","volume":"45","author":"Dempsey","year":"2002","journal-title":"Ergonomics"},{"key":"ref_22","unstructured":"IntelliPERMIT (2023, April 13). Job Risk Assessments: Manage Risk Assessment. Available online: www.intellipermit.com\/job-risk-assessments\/."},{"key":"ref_23","unstructured":"Lellis, C. (2023, April 13). The Difference between Job Safety Analysis and Risk Assessment. Available online: http:\/\/www.perillon.com\/blog\/difference-between-job-safety-analysis-and-risk-assessment."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"491","DOI":"10.3233\/WOR-2011-1199","article-title":"A preliminary investigation of upper limb muscle activity during simulated Canadian forest harvesting operations","volume":"39","author":"Kuruganti","year":"2011","journal-title":"Work"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1080\/00140139.2017.1355070","article-title":"Biomechanical investigation of prolonged driving in an ergonomically designed truck seat prototype","volume":"61","author":"Cardoso","year":"2018","journal-title":"Ergonomics"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"18","DOI":"10.5604\/01.3001.0014.1770","article-title":"Control of the workplace environment by physical factors and SMART monitoring","volume":"103","author":"Kruzhilko","year":"2020","journal-title":"Arch. Mater. Sci. Eng."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Shafiq, M.T., and Afzal, M. (2020). Potential of virtual design construction technologies to improve job-site safety in gulf corporation council. Sustainability, 12.","DOI":"10.3390\/su12093826"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Ranavolo, A., Draicchio, F., Varrecchia, T., Silvetti, A., and Iavicoli, S. (2018). Wearable monitoring devices for biomechanical risk assessment at work: Current status and future challenges\u2014A systematic review. Int. J. Environ. Res. Public Health, 15.","DOI":"10.3390\/ijerph15092001"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.neuroimage.2013.11.032","article-title":"The dynamics of contour integration: A simultaneous EEG\u2013fMRI study","volume":"88","author":"Vanderperren","year":"2014","journal-title":"Neuroimage"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/j.procir.2018.03.198","article-title":"Automatic assessment of the ergonomic risk for manual manufacturing and assembly activities through optical motion capture technology","volume":"72","author":"Bortolini","year":"2018","journal-title":"Procedia CIRP"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"103147","DOI":"10.1016\/j.ergon.2021.103147","article-title":"In-field instrumented ergonomic risk assessment: Inertial measurement units versus Kinect V2","volume":"84","author":"Humadi","year":"2021","journal-title":"Int. J. Ind. Ergon."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.aei.2017.11.001","article-title":"Development of ergonomic posture recognition technique based on 2D ordinary camera for construction hazard prevention through view-invariant features in 2D skeleton motion","volume":"34","author":"Yan","year":"2017","journal-title":"Adv. Eng. Inform."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"11556","DOI":"10.3390\/s101211556","article-title":"The use of wearable inertial motion sensors in human lower limb biomechanics studies: A systematic review","volume":"10","author":"Fong","year":"2010","journal-title":"Sensors"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1290","DOI":"10.1080\/001401398186315","article-title":"OCRA: A concise index for the assessment of exposure to repetitive movements of the upper limbs","volume":"41","author":"Occhipinti","year":"1998","journal-title":"Ergonomics"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"443","DOI":"10.1080\/15428119591016863","article-title":"The strain index: A proposed method to analyze jobs for risk of distal upper extremity disorders","volume":"56","author":"Garg","year":"1995","journal-title":"Am. Ind. Hyg. Assoc. J."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"478","DOI":"10.1016\/j.ergon.2012.07.003","article-title":"Comparing the results of eight methods used to evaluate risk factors associated with musculoskeletal disorders","volume":"42","author":"Chiasson","year":"2012","journal-title":"Int. J. Ind. Ergon."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"274","DOI":"10.1016\/j.ijpe.2006.09.006","article-title":"Verifying OCRA\u2019s economic sense: Response to Agrell and West (2001)","volume":"107","author":"Parkan","year":"2007","journal-title":"Int. J. Prod. Econ."},{"key":"ref_38","unstructured":"(2009). Ergonomics\u2014Manual Handling\u2014Part 3: Handling of Low Loads at High Frequency (Standard No. ISO 11228-3:2009)."},{"key":"ref_39","unstructured":"Pheasant, S., and Haslegrave, C.M. (2005). Bodyspace: Anthropometry, Ergonomics and the Design of Work, CRC Press."},{"key":"ref_40","unstructured":"Castellucci, I., Viviani, C., and Mart\u00ednez, M. (2017). Tablas de Antropometr\u00eda de la Poblaci\u00f3n Trabajadora Chilena, Universidad de Valpar\u00edaso, Mutual de Seguridad."},{"key":"ref_41","unstructured":"Naddeo, A., Barba, S., and Ferrero Francia, I. (2013, January 11\u201314). Propuesta de un nuevo m\u00e9todo no invasivo para el an\u00e1lisis postural con aplicaciones de fotogrametr\u00eda 4d. Proceedings of the XI Congreso Ibero-Americano de Ingegnieria Mecanica (CIBIM2013), La Plata, Argentina."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1093\/biomet\/52.3-4.591","article-title":"An analysis of variance test for normality (complete samples)","volume":"52","author":"Shapiro","year":"1965","journal-title":"Biometrika"},{"key":"ref_43","unstructured":"Tabachnick, B.G., Fidell, L.S., and Ullman, J.B. (2013). Using Multivariate Statistics, Pearson."},{"key":"ref_44","unstructured":"Conover, W.J. (1999). Practical Nonparametric Statistics, John Wiley & Sons."},{"key":"ref_45","unstructured":"Solanas, A., Leiva, D., Manolov, R., Per\u00f3, M., and Gu\u00e0rdia, J. (2016). Estad\u00edstica para las Ciencias del Comportamiento. Ejercicios Comentados, Edicions Universitat Barcelona."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/17\/7623\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T20:45:31Z","timestamp":1760129131000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/17\/7623"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,9,2]]},"references-count":45,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2023,9]]}},"alternative-id":["s23177623"],"URL":"https:\/\/doi.org\/10.3390\/s23177623","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,9,2]]}}}