{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T21:59:51Z","timestamp":1793397591351,"version":"4.5.0"},"reference-count":35,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,6,7]],"date-time":"2021-06-07T00:00:00Z","timestamp":1623024000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["18H03164"],"award-info":[{"award-number":["18H03164"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J cachexia sarcopenia muscle"],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The Asian Working Group for Sarcopenia (AWGS) 2019 recommended the use of dual\u2010energy X\u2010ray absorptiometry (DXA) or bioelectrical impedance analysis (BIA) to assess appendicular lean mass (ALM). AWGS, European Working Group on Sarcopenia in Older People 2 (EWGSOP2), Foundation for the National Institutes of Health Sarcopenia Project (FNIH), and International Working Group on Sarcopenia (IWGS) reported different cutoff values for sarcopenia. We aimed to validate these cutoff values in a Japanese population using DXA and two different devices of segmental multi\u2010frequency BIA (MF\u2010BIA).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      We examined the data of Japanese individuals aged 18\u201386\u00a0years using the DXA (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a0756) and two 8\u2010electrode MF\u2010BIA devices (InBody and TANITA MC) (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a01884). To validate these cutoff values, we used a population aged 18\u201340\u00a0years, and calculated the 95% confidence intervals (CIs) of [mean\u22122SD].\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      In DXA, the 95%CIs of [mean\u22122SD] for ALM\/Ht\n                      <jats:sup>2<\/jats:sup>\n                      were 5.2\u20135.8 and 6.6\u20137.3\u00a0kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      in women and men, respectively. The AWGS (&lt;5.4 in women and &lt;7.0 in men), and IWGS (\u22645.67 in women and \u22647.23 in men) cutoffs were acceptable. Regarding TANITA MC, the 95%CIs of [mean\u22122SD] for ALM\/Ht\n                      <jats:sup>2<\/jats:sup>\n                      were 5.6\u20136.0 and 6.9\u20137.4\u00a0kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      in women and men, respectively. The AWGS (&lt;5.7 in women and &lt;7.0 in men), EWGSOP2 (&lt;6.0 in women and &lt;7.0 in men), and IWGS cutoffs were acceptable. Regarding InBody, the 95%CIs of [mean\u22122SD] for ALM\/Ht\n                      <jats:sup>2<\/jats:sup>\n                      were 4.8\u20135.2 and 6.4\u20136.8\u00a0kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      in young women and men, respectively. All cutoff values were too high compared to those measured by InBody. InBody and TANITA MC were highly correlated (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0&lt;\u00a00.001), but the values by InBody were significantly lower than those by TANITA MC or DXA. Using Yamada's equation for InBody raw data, the AWGS, EWGSOP2, or IWGS cutoffs were acceptable. The BMI\u2010adjusted muscle mass cutoff values were &lt;0.60 and &lt;0.82\u00a0m\n                      <jats:sup>2<\/jats:sup>\n                      in women and men, respectively. We also obtained the 20th percentile in older adult population (ALM\/Ht\n                      <jats:sup>2<\/jats:sup>\n                      , &lt;6.2 in women and &lt;7.5 in men for TANITA MC; &lt;5.4 in women and &lt;7.0 in men for InBody).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      The AWGS and IWGS cutoffs were valid for DXA, and the AWGS, IWGS, and EWGSOP2 cutoffs were valid for TANITA MC in Japanese population. Because the prevalence of sarcopenia is too low particularly in women when using those criteria, the 20th percentile might be a good alternative criteria. If the ALM original InBody values are used, the cutoffs should be &lt;5.0\u00a0kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      in women and &lt;6.6\u00a0kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      in men.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jcsm.12732","type":"journal-article","created":{"date-parts":[[2021,6,8]],"date-time":"2021-06-08T18:24:43Z","timestamp":1623176683000},"page":"1000-1010","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":55,"title":["Validating muscle mass cutoffs of four international sarcopenia\u2010working groups in Japanese people using DXA and BIA"],"prefix":"10.1002","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4284-6317","authenticated-orcid":false,"given":"Yosuke","family":"Yamada","sequence":"first","affiliation":[{"name":"Department of Physical Activity Research National 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