{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T18:34:27Z","timestamp":1773858867498,"version":"3.50.1"},"reference-count":147,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T00:00:00Z","timestamp":1717372800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Anaerobic exercise decreases systemic pH and increases metabolic acidosis in athletes, altering the acid-base homeostasis. In addition, nutritional recommendations advising athletes to intake higher amounts of proteins and simple carbohydrates (including from sport functional supplements) could be detrimental to restoring acid-base balance. Here, this specific nutrition could be classified as an acidic diet and defined as \u2018Westernized athletic nutrition\u2019. The maintenance of a chronic physiological state of low-grade metabolic acidosis produces detrimental effects on systemic health, physical performance, and inflammation. Therefore, nutrition must be capable of compensating for systemic acidosis from anaerobic exercise. The healthy gut microbiota can contribute to improving health and physical performance in athletes and, specifically, decrease the systemic acidic load through the conversion of lactate from systemic circulation to short-chain fatty acids in the proximal colon. On the contrary, microbial dysbiosis results in negative consequences for host health and physical performance because it results in a greater accumulation of systemic lactate, hydrogen ions, carbon dioxide, bacterial endotoxins, bioamines, and immunogenic compounds that are transported through the epithelia into the blood circulation. In conclusion, the systemic metabolic acidosis resulting from anaerobic exercise can be aggravated through an acidic diet, promoting chronic, low-grade metabolic acidosis in athletes. The individuality of athletic training and nutrition must take into consideration the acid-base homeostasis to modulate microbiota and adaptive physiological responses.<\/jats:p>","DOI":"10.3390\/microorganisms12061138","type":"journal-article","created":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T12:19:46Z","timestamp":1717417186000},"page":"1138","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Summatory Effects of Anaerobic Exercise and a \u2018Westernized Athletic Diet\u2019 on Gut Dysbiosis and Chronic Low-Grade Metabolic Acidosis"],"prefix":"10.3390","volume":"12","author":[{"given":"Jes\u00fas","family":"\u00c1lvarez-Herms","sequence":"first","affiliation":[{"name":"Phymolab, Physiology and Molecular Laboratory, 40170 Collado Hermoso, Segovia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"214","DOI":"10.1007\/s394-001-8348-1","article-title":"Influence of Nutrition on Acid-Base Balance\u2014Metabolic Aspects","volume":"40","author":"Remer","year":"2001","journal-title":"Eur. 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