{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T06:07:10Z","timestamp":1788934030812,"version":"build-2803163510"},"reference-count":28,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T00:00:00Z","timestamp":1788912000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Pediatr."],"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>Obesity is defined by body mass index (BMI), a poor marker of adiposity that does not take into account sex differences. It was recently shown in a large database of adults that percentage of body fat (%BF) can also be used to define clinically relevant overweight\/obese status with sex-specific cut-offs. This definition was never tested in adolescent and young adult (AYA) kidney transplant (KT) recipients.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We compared the %BF method of defining obesity with the BMI-based method in a population of AYAs belonging to a KT transition clinic. The %BF was measured using a total body composition scale (Body Composition Analyzer, Tanita Corporation, Tokyo) based on the bioelectrical impedance analysis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Thirty-five patients (18 females, 17 males; mean age 19.5\u2009\u00b1\u20092.5 years) were enrolled. Hypertension was present in 54.3%; metabolic syndrome in 25.7%. BMI classified 42.9% [95% CI: 28.0\u201359.1%] as overweight\/obese vs. 28.6% [95% CI: 16.3\u201345.1%] by %BF (McNemar\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.125). %BF was significantly higher in females (30.1\u2009\u00b1\u20096.1%) than males (23.3\u2009\u00b1\u20097.9%;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&amp;lt;\u20090.01). BMI\u2013%BF correlation was stronger in males (\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u20090.903) than females (\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u20090.777).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Overweight and obesity were common in KT AYA recipients. Cardiovascular risks are common. The BMI-based method appeared to possibly overestimate obesity, although statistical significance was not attained, likely due to the small sample size. Further studies are needed to confirm if %BF is more accurate in determining obesity compared to BMI in this population.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fped.2026.1705330","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T05:44:40Z","timestamp":1788932680000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Obesity definition by percentage of body fat compared to body mass Index in a kidney transplant transition clinic"],"prefix":"10.3389","volume":"14","author":[{"given":"P.","family":"Chaudhary","sequence":"first","affiliation":[{"name":"Riley Hospital for Children, Department of Pediatrics, Indiana University","place":["Indianapolis, IN, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D.","family":"Pemmasani","sequence":"additional","affiliation":[{"name":"Riley Hospital for Children, Department of Pediatrics, Indiana University","place":["Indianapolis, IN, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. S.","family":"Friederich","sequence":"additional","affiliation":[{"name":"Riley Hospital for Children, Department of Pediatrics, Indiana University","place":["Indianapolis, IN, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Nailescu","sequence":"additional","affiliation":[{"name":"Riley Hospital for Children, Department of Pediatrics, Indiana University","place":["Indianapolis, IN, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,9]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"221","DOI":"10.1016\/S2213-8587(24)00316-4","article-title":"Definition and diagnostic criteria of clinical obesity","volume":"13","author":"Rubino","year":"2025","journal-title":"Lancet Diabetes Endocrinol"},{"key":"B2","doi-asserted-by":"publisher","first-page":"351","DOI":"10.1016\/S2213-8587(22)00047-X","article-title":"Obesity in children and adolescents: 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