{"title":"同时评估有氧运动男性在有或无碳水化合物溶液的情况下进行长时间运动后唾液和尿液中的α-淀粉酶活性。","authors":"Nobuo Yasuda, Kohei Yamamoto, Naoki Iwashita","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this study was to determine the effects of 2-h moderately prolonged exercise with carbohydrate intake or water placebo on salivary and urinary α-amylase isoenzyme activity in trained men.</p><p><strong>Materials and methods: </strong>Eleven aerobically fit men participated in this study. On two different occasions, participants performed 2-h cycling corresponding to a constant power output at 60% peak oxygen uptake. The study design involved a random order, placebo-controlled and cross-over assignment. Participants consumed either 6.2% carbohydrate solution or water placebo every twenty minutes thereafter (2 ml/kg body mass) over 2-h endurance exercise. Unstimulated whole salivary samples were collected using the passive drooling method at the 10-min period before and after exercise for the quantification of salivary α-amylase, immunoglobulin A (IgA) and total protein. Two-hour urinary samples were obtained at three time points before (-2-0h), immediately (0-2 h) after and 24-26 h after exercise for the analysis of α-amylase isoenzyme activity (pancreas- and saliva-derived types).</p><p><strong>Results: </strong>The activity of α-amylase in saliva and urine was significantly increased in connect with salivary total protein concentration immediately after moderately long-lasting exercise, but salivary IgA concentration was not statistically significant with or without exogenous carbohydrate intake.</p><p><strong>Conclusion: </strong>These findings suggest that 2-h moderate exercise appears to lead to the enhanced α-amylase activity in saliva and urine regardless of exogenous carbohydrate availability, demonstrating enhanced mucosal immune defense.</p>","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Concurrent evaluation of salivary and urinary α-amylase activity following prolonged exercise with or without carbohydrate solution in aerobically active men.\",\"authors\":\"Nobuo Yasuda, Kohei Yamamoto, Naoki Iwashita\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>The purpose of this study was to determine the effects of 2-h moderately prolonged exercise with carbohydrate intake or water placebo on salivary and urinary α-amylase isoenzyme activity in trained men.</p><p><strong>Materials and methods: </strong>Eleven aerobically fit men participated in this study. On two different occasions, participants performed 2-h cycling corresponding to a constant power output at 60% peak oxygen uptake. The study design involved a random order, placebo-controlled and cross-over assignment. Participants consumed either 6.2% carbohydrate solution or water placebo every twenty minutes thereafter (2 ml/kg body mass) over 2-h endurance exercise. Unstimulated whole salivary samples were collected using the passive drooling method at the 10-min period before and after exercise for the quantification of salivary α-amylase, immunoglobulin A (IgA) and total protein. Two-hour urinary samples were obtained at three time points before (-2-0h), immediately (0-2 h) after and 24-26 h after exercise for the analysis of α-amylase isoenzyme activity (pancreas- and saliva-derived types).</p><p><strong>Results: </strong>The activity of α-amylase in saliva and urine was significantly increased in connect with salivary total protein concentration immediately after moderately long-lasting exercise, but salivary IgA concentration was not statistically significant with or without exogenous carbohydrate intake.</p><p><strong>Conclusion: </strong>These findings suggest that 2-h moderate exercise appears to lead to the enhanced α-amylase activity in saliva and urine regardless of exogenous carbohydrate availability, demonstrating enhanced mucosal immune defense.</p>\",\"PeriodicalId\":0,\"journal\":{\"name\":\"\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0,\"publicationDate\":\"2021-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"3","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Concurrent evaluation of salivary and urinary α-amylase activity following prolonged exercise with or without carbohydrate solution in aerobically active men.
Objective: The purpose of this study was to determine the effects of 2-h moderately prolonged exercise with carbohydrate intake or water placebo on salivary and urinary α-amylase isoenzyme activity in trained men.
Materials and methods: Eleven aerobically fit men participated in this study. On two different occasions, participants performed 2-h cycling corresponding to a constant power output at 60% peak oxygen uptake. The study design involved a random order, placebo-controlled and cross-over assignment. Participants consumed either 6.2% carbohydrate solution or water placebo every twenty minutes thereafter (2 ml/kg body mass) over 2-h endurance exercise. Unstimulated whole salivary samples were collected using the passive drooling method at the 10-min period before and after exercise for the quantification of salivary α-amylase, immunoglobulin A (IgA) and total protein. Two-hour urinary samples were obtained at three time points before (-2-0h), immediately (0-2 h) after and 24-26 h after exercise for the analysis of α-amylase isoenzyme activity (pancreas- and saliva-derived types).
Results: The activity of α-amylase in saliva and urine was significantly increased in connect with salivary total protein concentration immediately after moderately long-lasting exercise, but salivary IgA concentration was not statistically significant with or without exogenous carbohydrate intake.
Conclusion: These findings suggest that 2-h moderate exercise appears to lead to the enhanced α-amylase activity in saliva and urine regardless of exogenous carbohydrate availability, demonstrating enhanced mucosal immune defense.