{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T06:43:18Z","timestamp":1775803398902,"version":"3.50.1"},"reference-count":47,"publisher":"Public Library of Science (PLoS)","issue":"11","license":[{"start":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T00:00:00Z","timestamp":1762128000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002241","name":"Japan Science and Technology Agency","doi-asserted-by":"publisher","award":["JPMJPF2017"],"award-info":[{"award-number":["JPMJPF2017"]}],"id":[{"id":"10.13039\/501100002241","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009619","name":"Japan Agency for Medical Research and Development","doi-asserted-by":"publisher","award":["JP21km0908001"],"award-info":[{"award-number":["JP21km0908001"]}],"id":[{"id":"10.13039\/100009619","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>This study aimed to apply a neural network to raw bioelectrical impedance analysis data and to test whether sarcopenia could be predicted with high accuracy. The study population comprised 727 community-dwelling older adults aged 65\u201385 years who participated in the Kasama Study from 2015 to 2018. Sarcopenia was determined using the standard values set by the Asian Working Group for Sarcopenia 2019. Skeletal muscle mass index, grip strength, and five-times sit-to-stand test (Dataset 1) or skeletal muscle mass index, grip strength, and gait speed (Dataset 2) were used. The characteristic variables were sex, age, height, and body mass index, as well as parameters from bioelectrical impedance analysis, such as reactance, resistance, and impedance for six frequencies (1, 5, 50, 250, 500, and 1000\u2009kHz) in six body parts measured using a multi-frequency body composition analyzer (MC-980A, Tanita). For analysis, a neural network was used to construct a model. For verification of the model\u2019s accuracy, a receiver operating characteristic analysis was performed to calculate the sensitivity, specificity, area under the curve, and positive and negative predictive values. Among the participants analyzed, 21 (3.3%) in Dataset 1 and 24 (3.7%) in Dataset 2 had sarcopenia. In Dataset 1, the model that used 5, 50, and 250\u2009kHz showed the highest prediction accuracy (sensitivity: 1.00, specificity: 0.91, area under the curve: 0.96, accuracy: 0.91, positive predictive value: 0.28, negative predictive value: 1.00). In Dataset 2, the model that used 50\u2009kHz exhibited the highest prediction accuracy (sensitivity: 0.91, specificity: 0.84, area under the curve: 0.88, accuracy: 0.84, positive predictive value: 0.17, negative predictive value: 1.00). In conclusion, highly accurate predictions are possible by applying a neural network to the raw data obtained from bioelectrical impedance analysis. As a highly accurate sarcopenia screening method, it is expected to be used in various settings, ranging from clinical practice to local communities.<\/jats:p>","DOI":"10.1371\/journal.pone.0335601","type":"journal-article","created":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T18:22:06Z","timestamp":1762194126000},"page":"e0335601","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":1,"title":["A neural network approach to sarcopenia prediction based on bioelectrical impedance in community-dwelling older adults"],"prefix":"10.1371","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-0568-6668","authenticated-orcid":true,"given":"Kyohei","family":"Shibuya","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2552-3882","authenticated-orcid":true,"given":"Yujiro","family":"Asano","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4090-2802","authenticated-orcid":true,"given":"Koki","family":"Nagata","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8408-6619","authenticated-orcid":true,"given":"Taishi","family":"Tsuji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kotaro","family":"Kawajiri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomohiro","family":"Okura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"340","published-online":{"date-parts":[[2025,11,3]]},"reference":[{"issue":"3","key":"pone.0335601.ref001","article-title":"Asian 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Tinsley","year":"2019","journal-title":"J Int Soc Sports Nutr"},{"key":"pone.0335601.ref025","unstructured":"Yegnanarayana B. Artificial neural networks. Prentice-Hall of India; 2004. Available: https:\/\/books.google.com\/books\/about\/ARTIFICIAL_NEURAL_NETWORKS.html?id=RTtvUVU_xL4C"},{"issue":"5","key":"pone.0335601.ref026","doi-asserted-by":"crossref","first-page":"390","DOI":"10.1111\/sdi.13131","article-title":"Prediction of the sarcopenia in peritoneal dialysis using simple clinical information: A machine learning-based model","volume":"36","author":"J Wu","year":"2023","journal-title":"Semin Dial"},{"issue":"1","key":"pone.0335601.ref027","doi-asserted-by":"crossref","first-page":"49","DOI":"10.7600\/jpfsm.6.49","article-title":"Study protocol and overview of the Kasama Study: Creating a comprehensive, community-based system for preventive nursing care and supporting successful aging","volume":"6","author":"T Okura","year":"2017","journal-title":"JPFSM"},{"issue":"4","key":"pone.0335601.ref028","doi-asserted-by":"crossref","first-page":"1000","DOI":"10.1002\/jcsm.12732","article-title":"Validating muscle mass cutoffs of four international sarcopenia-working 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speed, balance, and psychological status in addition to strength in older people","volume":"57","author":"SR Lord","year":"2002","journal-title":"J Gerontol A Biol Sci Med Sci"},{"issue":"6","key":"pone.0335601.ref038","doi-asserted-by":"crossref","first-page":"390","DOI":"10.1159\/000088703","article-title":"Physiological and psychological predictors of walking speed in older community-dwelling people","volume":"51","author":"A Tiedemann","year":"2005","journal-title":"Gerontology"},{"issue":"5","key":"pone.0335601.ref039","doi-asserted-by":"crossref","first-page":"1226","DOI":"10.1016\/j.clnu.2004.06.004","article-title":"Bioelectrical impedance analysis?part I: review of principles and methods","volume":"23","author":"U KYLE","year":"2004","journal-title":"Clinical Nutrition"},{"issue":"5","key":"pone.0335601.ref040","doi-asserted-by":"crossref","first-page":"510","DOI":"10.1093\/gerona\/glq001","article-title":"Extracellular Water May Mask Actual Muscle Atrophy During 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