Evans Gethin H, Watson Phillip, Shirreffs Susan M, Maughan Ronald J
School of Healthcare Science, Manchester Metropolitan University, Manchester, United Kingdom.
Int J Sport Nutr Exerc Metab. 2016 Apr;26(2):128-34. doi: 10.1123/ijsnem.2015-0110. Epub 2015 Aug 31.
Previous investigations have suggested that exercise at intensities greater than 70% maximal oxygen uptake (VO2max) reduces gastric emptying rate during exercise, but little is known about the effect of exercise intensity on gastric emptying in the postexercise period. To examine this, 8 healthy participants completed 3 experimental trials that included 30 min of rest (R), low-intensity (L; 33% of peak power output) exercise, or high-intensity (H; 10 × 1 min at peak power output followed by 2 min rest) exercise. Thirty minutes after completion of exercise, participants ingested 595 ml of a 5% glucose solution, and gastric emptying rate was assessed via the double-sampling gastric aspiration method for 60 min. No differences (p > .05) were observed in emptying characteristics for total stomach volume or test meal volume between the trials, and the quantity of glucose delivered to the intestine did not differ between trials (p > .05). Half-emptying times did not differ (p = .902) between trials and amounted to 22 ± 9, 22 ± 9, and 22 ± 7 min (M ± SD) during the R, L, and H trials, respectively. These results suggest that exercise has little effect on postexercise gastric emptying rate of a glucose solution.
先前的研究表明，强度大于最大摄氧量（VO2max）70%的运动在运动期间会降低胃排空率，但关于运动强度对运动后胃排空的影响知之甚少。为了对此进行研究，8名健康参与者完成了3项实验试验，包括30分钟的休息（R）、低强度（L；峰值功率输出的33%）运动或高强度（H；在峰值功率输出下进行10次1分钟运动，随后休息2分钟）运动。运动结束30分钟后，参与者摄入595毫升5%的葡萄糖溶液，并通过双样本胃抽吸法评估胃排空率60分钟。试验之间在总胃容积或试验餐容积的排空特征方面未观察到差异（p>.05），试验之间输送到肠道的葡萄糖量也无差异（p>.05）。试验之间的半排空时间无差异（p = .902），在休息（R）、低强度（L）和高强度（H）试验期间分别为22±9、22±9和22±7分钟（平均值±标准差）。这些结果表明，运动对运动后葡萄糖溶液的胃排空率影响不大。
