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The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue
Kefir is an acidic, carbonated, and fermented dairy product produced by fermenting milk with kefir grains. The Lactobacillus species constitutes an important part of kefir grains. In a previous animal study, kefir effectively improved exercise performance and had anti-fatigue effects. The purpose of...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7996501/ https://www.ncbi.nlm.nih.gov/pubmed/33669119 http://dx.doi.org/10.3390/metabo11030136 |
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author | Lee, Mon-Chien Jhang, Wei-Lun Lee, Chia-Chia Kan, Nai-Wen Hsu, Yi-Ju Ho, Chin-Shan Chang, Chun-Hao Cheng, Yi-Chen Lin, Jin-Seng Huang, Chi-Chang |
author_facet | Lee, Mon-Chien Jhang, Wei-Lun Lee, Chia-Chia Kan, Nai-Wen Hsu, Yi-Ju Ho, Chin-Shan Chang, Chun-Hao Cheng, Yi-Chen Lin, Jin-Seng Huang, Chi-Chang |
author_sort | Lee, Mon-Chien |
collection | PubMed |
description | Kefir is an acidic, carbonated, and fermented dairy product produced by fermenting milk with kefir grains. The Lactobacillus species constitutes an important part of kefir grains. In a previous animal study, kefir effectively improved exercise performance and had anti-fatigue effects. The purpose of this research was to explore the benefits of applying kefir to improve exercise performance, reduce fatigue, and improve physiological adaptability in humans. The test used a double-blind crossover design and supplementation for 28 days. Sixteen 20–30 year-old subjects were divided into two groups in a balanced order according to each individual’s initial maximal oxygen uptake and were assigned to receive a placebo (equal flavor, equal calories, 20 g/day) or SYNKEFIR™ (20 g/day) every morning. After the intervention, there were 28 days of wash-out, during which time the subjects did not receive further interventions. After supplementation with SYNKEFIR™, the exercise time to exhaustion was significantly greater than that before ingestion (p = 0.0001) and higher than that in the Placebo group by 1.29-fold (p = 0.0004). In addition, compared with the Placebo group, the SYNKEFIR™ administration group had significantly lower lactate levels in the exercise and recovery (p < 0.05). However, no significant difference was observed in the changes in the gut microbiota. Although no significant changes in body composition were found, SYNKEFIR™ did not cause adverse reactions or harm to the participants’ bodies. In summary, 28 days of supplementation with SYNKEFIR™ significantly improved exercise performance, reduced the production of lactic acid after exercise, and accelerated recovery while also not causing any adverse reactions. |
format | Online Article Text |
id | pubmed-7996501 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79965012021-03-27 The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue Lee, Mon-Chien Jhang, Wei-Lun Lee, Chia-Chia Kan, Nai-Wen Hsu, Yi-Ju Ho, Chin-Shan Chang, Chun-Hao Cheng, Yi-Chen Lin, Jin-Seng Huang, Chi-Chang Metabolites Article Kefir is an acidic, carbonated, and fermented dairy product produced by fermenting milk with kefir grains. The Lactobacillus species constitutes an important part of kefir grains. In a previous animal study, kefir effectively improved exercise performance and had anti-fatigue effects. The purpose of this research was to explore the benefits of applying kefir to improve exercise performance, reduce fatigue, and improve physiological adaptability in humans. The test used a double-blind crossover design and supplementation for 28 days. Sixteen 20–30 year-old subjects were divided into two groups in a balanced order according to each individual’s initial maximal oxygen uptake and were assigned to receive a placebo (equal flavor, equal calories, 20 g/day) or SYNKEFIR™ (20 g/day) every morning. After the intervention, there were 28 days of wash-out, during which time the subjects did not receive further interventions. After supplementation with SYNKEFIR™, the exercise time to exhaustion was significantly greater than that before ingestion (p = 0.0001) and higher than that in the Placebo group by 1.29-fold (p = 0.0004). In addition, compared with the Placebo group, the SYNKEFIR™ administration group had significantly lower lactate levels in the exercise and recovery (p < 0.05). However, no significant difference was observed in the changes in the gut microbiota. Although no significant changes in body composition were found, SYNKEFIR™ did not cause adverse reactions or harm to the participants’ bodies. In summary, 28 days of supplementation with SYNKEFIR™ significantly improved exercise performance, reduced the production of lactic acid after exercise, and accelerated recovery while also not causing any adverse reactions. MDPI 2021-02-25 /pmc/articles/PMC7996501/ /pubmed/33669119 http://dx.doi.org/10.3390/metabo11030136 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Article Lee, Mon-Chien Jhang, Wei-Lun Lee, Chia-Chia Kan, Nai-Wen Hsu, Yi-Ju Ho, Chin-Shan Chang, Chun-Hao Cheng, Yi-Chen Lin, Jin-Seng Huang, Chi-Chang The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue |
title | The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue |
title_full | The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue |
title_fullStr | The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue |
title_full_unstemmed | The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue |
title_short | The Effect of Kefir Supplementation on Improving Human Endurance Exercise Performance and Antifatigue |
title_sort | effect of kefir supplementation on improving human endurance exercise performance and antifatigue |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7996501/ https://www.ncbi.nlm.nih.gov/pubmed/33669119 http://dx.doi.org/10.3390/metabo11030136 |
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