比赛前,青少年运动员在心理和生理上大多处于高度兴奋和精神集中的紧张应激状态,此时,胃肠道和脾区的血流量会减少,同时下部肠道蠕动会增加,从而引起消化机能的减弱,可能会出现食欲减退和腹部不适甚至腹泻等症状。此外,比赛期属于高强度运动时期,为了充分发挥个人能力获得理想的优异成绩,还需要提前进 Before the game, young athletes are mostly mentally and physically intensely excited and concentrated in a state of intense stress. At this time, the blood flow to the gastrointestinal tract and spleen area will be reduced, while the lower intestinal motility will increase, causing digestive function Weakened, there may be loss of appetite and abdominal discomfort and even diarrhea and other symptoms. In addition, the game period belongs to the high-intensity period of exercise, in order to give full play to individual ability to obtain the desired excellent results, but also need to advance