The impact of a carbohydrate-electrolyte solution with sodium alginate and pectin for hydrogel formation (CES-HGel), was compared to a standard CES with otherwise matched ingredients (CES-Std), for blood glucose, substrate oxidation, gastrointestinal symptoms (GIS; nausea, belching, bloating, pain, regurgitation, flatulence, urge to defecate, and diarrhea), and exercise performance. Nine trained male endurance runners completed 3 hr of steady-state running (SS) at 60% V˙O2max, consuming 90 g/hr of carbohydrate from CES-HGel or CES-Std (53 g/hr maltodextrin, 37 g/hr fructose, 16% w/v solution) in a randomized crossover design, followed by an incremental time to exhaustion (TTE) test. Blood glucose and substrate oxidation were measured every 30 min during SS and oxidation throughout TTE. Breath hydrogen (H2) was measured every 30 min during exercise and every 15 min for 2 hr postexercise. GIS were recorded every 15 min throughout SS, immediately after and every 15-min post-TTE. No differences in blood glucose (incremental area under the curve [mean ± SD]: CES-HGel 1,100 ± 96 mmol·L-1·150 min-1 and CES-Std 1,076 ± 58 mmol·L-1·150 min-1; p = .266) were observed during SS. There were no differences in substrate oxidation during SS (carbohydrate: p = .650; fat: p = .765) or TTE (carbohydrate: p = .466; fat: p = .633) and no effect of trial on GIS incidence (100% in both trials) or severity (summative rating score: CES-HGel 29.1 ± 32.6 and CES-Std 34.8 ± 34.8; p = .262). Breath hydrogen was not different between trials (p = .347), nor was TTE performance (CES-HGel 722 ± 182 s and CES-Std: 756 ± 187 s; p = .08). In conclusion, sodium alginate and pectin added to a CES consumed during endurance running does not alter the blood glucose responses, carbohydrate malabsorption, substrate oxidation, GIS, or TTE beyond those of a CES with otherwise matched ingredients.

中文翻译：

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与浓度和营养匹配的安慰剂相比，水凝胶碳水化合物-电解质饮料不会改善葡萄糖利用率、底物氧化、胃肠道症状或运动表现。

将含有藻酸钠和果胶的碳水化合物电解质溶液对水凝胶形成 (CES-HGel) 的影响与具有其他匹配成分的标准 CES (CES-Std) 对血糖、底物氧化、胃肠道症状 (GIS;恶心、嗳气、腹胀、疼痛、反流、胀气、排便冲动和腹泻）和运动表现。九名训练有素的男性耐力跑者以 60% V·O2max 完成了 3 小时的稳态跑步 (SS)，消耗了 90 克/小时来自 CES-HGel 或 CES-Std 的碳水化合物（53 克/小时麦芽糊精，37 克/小时果糖） , 16% w/v 解决方案) 在随机交叉设计中, 然后是增量时间耗尽 (TTE) 测试。在 SS 和整个 TTE 氧化期间每 30 分钟测量一次血糖和底物氧化。在运动期间每 30 分钟测量一次呼吸氢 (H2)，在运动后 2 小时内每 15 分钟测量一次。在整个 SS 期间，每 15 分钟记录一次 GIS，在 TTE 之后立即和每 15 分钟之后记录一次。血糖无差异（曲线下增量面积 [平均值 ± SD]：CES-HGel 1,100 ± 96 mmol·L-1·150 min-1 和 CES-Std 1,076 ± 58 mmol·L-1·150 min-1 ; p = .266) 在 SS 期间观察到。SS（碳水化合物：p = .650；脂肪：p = .765）或 TTE（碳水化合物：p = .466；脂肪：p = .633）期间底物氧化没有差异，试验对 GIS 发病率没有影响（两项试验均为 100%）或严重程度（总分：CES-HGel 29.1 ± 32.6 和 CES-Std 34.8 ± 34.8；p = .262）。试验之间呼吸氢气没有差异 (p = .347)，TTE 性能也没有差异（CES-HGel 722 ± 182 s 和 CES-Std：756 ± 187 s；p = .08）。综上所述，