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饭后,消化系统在中枢神经系统的调节下,开始紧张地消化食物.此时消化道内血管充血,血流量增多,消化液大量分泌,以保证食物的消化.如果这时马上游泳,中枢神经不得不把血液调配到运动器官,这使消化系统各器官的供血减少,分泌的消化液减少,从而影响人体对食物的消化.人在水中,由于水的压力影响了胃的蠕动,妨碍了食物与胃液的充分混合.同时,因受冷水刺激,血管收缩,使胃、肠供血更加不足,也容易引起胃、肠痉挛,发生腹痛或呕吐.
After meals, the digestive system in the central nervous system regulation, began to nervously digest food .At this time, the digestive tract vascular congestion, blood flow increased, a large number of secretion of digestive juice, in order to ensure the digestion of food .If this time immediately swimming, the central nervous can not Not to deploy the blood to the moving organs, which reduces the supply of blood to various organs of the digestive system and reduces the secretion of digestive juice, thus affecting the body’s digestion of food.Human water, due to water pressure affects the gastric motility, impeding the food and At the same time, due to cold water stimulation, vasoconstriction, so that the stomach, intestinal blood supply more inadequate, but also easily lead to stomach, intestinal cramps, abdominal pain or vomiting occurred.