在紧张的体力负荷(包括重大比赛时的心理情绪紧张状态)条件下,影响免疫力的主要原因有如下四个:1) 神经内分泌调节不平衡;2) 内部环境深刻的代谢变化(PH、尿素、乳酸水平等的极大变化);3) 相对的或绝对的营养不足及与其有关的对免疫系统的能量供应、代偿性供应或基质供应的不足;4) 由慢性传染病灶引起的 There are four main factors that affect immunity under intense physical load (including mental stress at major events): 1) imbalance in neuroendocrine regulation; 2) profound metabolic changes in the internal environment (pH, urea , Lactic acid levels, etc.); 3) relative or absolute undernutrition and its associated deficiencies in the energy supply, compensatory supply or matrix supply to the immune system; 4)