{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T17:48:01Z","timestamp":1789753681500,"version":"4.0.1"},"reference-count":41,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,1,27]],"date-time":"2025-01-27T00:00:00Z","timestamp":1737936000000},"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. Physiol."],"abstract":"<jats:sec><jats:title>Purpose<\/jats:title><jats:p>This research aimed to examine the fluctuations in body composition and Urine-Specific Gravity (U<jats:sub>SG<\/jats:sub>) of elite wrestlers in a high-level official wrestling competition.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>Thirty-one wrestlers in the T\u00fcrkiye Senior Greco-Romen Wrestling national team participated in this research. Wrestlers were divided into weight loss and non-weight loss groups, and changes in their body composition and U<jats:sub>SG<\/jats:sub> were measured at three different times (beginning of the camp, weigh-in, and before the competition). The duration between the beginning of the camp and the competition weigh-in time was considered as a dehydration process and the duration between the competition weigh-in time and before the competition was regarded as a rehydration process. In the data analysis, 3 \u00d7 2 repeated measures ANOVA was used.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>It was determined that during the dehydration process of wrestlers who lost weight, there was a decrease of 4.02%, 2.50%, 14.62%, and 2.66% in body weight, FFM, FM, and TBW, whereas, during the rehydration process, there was a gain of 1.85%, 1.77%, 2.63%, and 1.87%, respectively. In addition, it was determined that wrestlers who lost weight had a 0.87% increase in U<jats:sub>SG<\/jats:sub> during the dehydration process and a 0.41% decrease in the rehydration process. The results show that wrestlers cannot regain body weight and FM lost in the hydration fluctuation during a competition, but they can regain FFM, TBW, and U<jats:sub>SG<\/jats:sub>. However, although it was determined that the wrestlers were statistically able to regain FFM, TBW, and U<jats:sub>SG<\/jats:sub>, they could not return to the levels at the beginning of the camp.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>It was determined that before a high-level official wrestling competition, wrestlers still preferred weight loss practices and it was determined that they were exposed to fluctuations in their body composition and U<jats:sub>SG<\/jats:sub>. It is thought that this result may negatively affect the wrestlers\u2019 health and competition performance during a high-level competition.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fphys.2024.1516149","type":"journal-article","created":{"date-parts":[[2025,1,27]],"date-time":"2025-01-27T06:42:20Z","timestamp":1737960140000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Fluctuation in body composition and urine specific gravity of Turkish wrestlers in a top-level official wrestling competition"],"prefix":"10.3389","volume":"15","author":[{"given":"Ersel","family":"Donmez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ozkan","family":"Isik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Baic","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,1,27]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"436","DOI":"10.1249\/MSS.0b013e3181ba8055","article-title":"Prevalence, magnitude, and methods of rapid weight loss among judo competitors","volume":"42","author":"Artioli","year":"2010","journal-title":"Med. 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