Considering the recent growth of exercise gastroenterology research focusing on exercise-induced gastrointestinal syndrome mechanisms, response magnitude, prevention and management strategies, the standardized assessment of gastrointestinal symptoms (GIS) is warranted. The current methodological study aimed to test the reliability of a modified visual analog scale for assessing GIS during exercise, in response to a variety of exertional-stress scenarios, with and without dietary intervention. Recreational endurance runners (n = 31) performed one of the three exercise protocols, which included: 2-hr running at 70% V˙O2max in temperate (24.7 °C) ambient conditions, with fluid restriction; 2-hr running at 60% V˙O2max in hot (35.1 °C) ambient conditions, while consuming chilled water immediately before and every 15 min during exercise; and 2-hr running at 60% V˙O2max in temperate (23.0 °C) ambient conditions, while consuming 30 g/20 min carbohydrate (2∶1 glucose∶fructose, 10% temperate w/v), followed by a 1-hr distance test. GIS was monitored pre-exercise, periodically during exercise, and immediately postexercise. After wash out, participants were retested in mirrored conditions. No significant differences (p > .05) were identified between test-retest using Wilcoxon signed-rank test for all GIS (specific and categorized), within each exercise protocol and the combined protocols. Strong correlations were observed for gut discomfort, total GIS, upper GIS, and nausea (rs = .566 to rs = .686; p < .001), but not for lower GIS (rs = .204; p = .232). Cohen's magnitude of difference was minimal for all GIS (specific δ < 0.14 and categorized δ < 0.08). The modified visual analog scale for assessing GIS during exercise appears to be a reliable tool for identifying incidence and severity of GIS in cohort populations and is sensitive enough to detect exertional and intervention differences.

中文翻译：

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修改后的可视模拟量表评估工具的重测可靠性，用于确定运动压力引起的胃肠道症状的发生率和严重程度。

考虑到最近运动胃肠病学研究的增长，侧重于运动引起的胃肠综合征的机制，反应幅度，预防和管理策略，因此有必要对胃肠道症状（GIS）进行标准化评估。当前的方法学研究旨在测试修改后的视觉模拟量表在运动期间评估GIS的可靠性，以应对各种劳累压力情况，无论有无饮食干预。娱乐耐力跑者（n = 31）执行以下三种锻炼方案之一：在温和（24.7°C）的环境下，在70％V˙O2max的条件下进行2个小时的运动，并限制体液；在高温（35.1°C）的环境中，在60％V = O2max的条件下运行2小时，同时在运动前和运动中每15分钟消耗冰冷的水一次；在温带（23.0°C）环境条件下，在60％V˙O2max的条件下运行2小时，同时消耗30 g / 20分钟的碳水化合物（2：1葡萄糖：果糖，10％温和的w / v），然后是1- hr距离测试。在运动前，运动过程中以及运动后立即监测GIS。冲洗后，参与者在镜像条件下进行重新测试。对于每个运动方案和组合方案中的所有GIS（特定和分类），使用Wilcoxon符号秩检验进行的再测试之间未发现显着差异（p> .05）。肠道不适，总GIS，较高GIS和恶心之​​间存在强相关性（rs = .566至rs = .686； p <.001），而对于较低的GIS没有相关性（rs = .204; p = .232）。对于所有GIS（特定δ<0.14和分类δ<0.08），Cohen的差异幅度最小。