本项研究观察了36名战士在不同的劳动强度下,某些生化指标的变化。结果表明:劳动后,血乳酸与劳动强度呈双曲线型相关;尿蛋白与尿Na~+的变化幅度随劳动强度呈线性增加;尿K~+的增加幅度则渐小;尿肌酐、唾液K~+、Na~+的增加量随劳动强度是二次抛物线型变化。提示不同劳动强度下,机体各系统生物化学变化规律不一,疲劳的致因亦不尽相同。血乳酸、尿蛋白、尿Na~+可考虑作为评价疲劳的较好指标。 This study examines the 36 soldiers in different labor intensity, some of the changes in biochemical indicators. The results showed that after labor, blood lactic acid and labor intensity showed a hyperbolic correlation; urinary protein and urine Na ~ + changes with the linear increase in labor intensity; urine K ~ + increase in the smaller; urine creatinine, saliva K ~ +, Na ~ + increase with labor intensity is a quadratic parabolic change. Prompted different labor intensity, the system of biochemical changes in the law of different systems, the cause of fatigue are not the same. Blood lactate, urine protein, urine Na ~ + can be considered as a better indicator of fatigue.