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目的:探讨不同强度运动对胃肠激素和免疫物质的影响。方法:选取18名体育专业女大学生为实验对象,随机分为安静对照组(CG)、中等强度运动组(MEG)和大强度运动组(HEG),每组6人。运动组采用跑台运动方式并分别以50%～60%和80%～100%VO2max分级控制运动强度。实验为期6天。在安静时及6天不同强度运动后分别测定血液胃动素(MTL)、胃泌素(GAS)、分泌型免疫球蛋白A(SIgA)和白细胞介素2(IL-2)水平。结果:MEG的GAS和MTL浓度较CG和HEG显著升高(P<0.01)。HEG和MEG的SIgA浓度较CG显著降低(P<0.05,P<0.01)。HEG的IL-2水平较CG和MEG显著降低(P<0.01)。结论:不同强度运动对体育专业女大学生胃肠激素和胃肠免疫物质均产生不同程度的影响。中等强度的适量运动可促进胃肠激素的分泌,而持续大强度的剧烈运动会抑制胃肠免疫功能。
Objective: To explore the effects of different intensity exercises on gastrointestinal hormones and immune substances. Methods: Eighteen PE majors were randomly divided into 4 groups: control group (CG), moderate intensity exercise group (MEG) and high intensity exercise group (HEG). Exercise group using treadmill exercise and were 50% to 60% and 80% to 100% VO2max grading control of exercise intensity. The experiment lasts 6 days. Blood motilin (MTL), gastrin (GAS), secreted immunoglobulin A (SIgA) and interleukin 2 (IL-2) levels were measured at rest and after 6 days of exercise at different intensities. Results: The concentrations of GAS and MTL in MEG were significantly higher than those in CG and HEG (P <0.01). SIgA concentrations in HEG and MEG were significantly lower than those in CG (P <0.05, P <0.01). The levels of IL-2 in HEG were significantly lower than those in CG and MEG (P <0.01). Conclusion: Different intensity exercises have different effects on the gastrointestinal hormones and gastrointestinal immunological substances of the sports majors. Moderate-intensity moderate exercise can promote the secretion of gastrointestinal hormones, and sustained vigorous intense exercise will inhibit gastrointestinal immune function.