摘要目的:对海上大深度氦氧饱和潜水高气压暴露过程中潜水员的机体负荷进行监测，为保障潜水员的健康安全提供参考。方法:采用心率与自我运动强度感觉量表(RPE)相结合的方法监测潜水员的机体负荷状态，并对结果进行分析。结果:4名潜水员整体心率平稳，减压第3天6∶30(63 m)1号潜水员出现极低心率(43次/min)，3号潜水员心率为53次/min。潜水员饱和暴露及减压各阶段心率与入舱前比较差异均无统计学意义( P>0.05)。潜水员整体RPE评分为6~16分，整体变化趋势与高气压暴露过程相吻合，100 m稳压至巡潜结束阶段潜水员的机体负荷最大，其余阶段负荷较小。RPE评分在入舱前略高于加压阶段，巡潜阶段达到高峰，减压阶段处于平稳状态，第2钟潜水员巡潜结束时的RPE评分显著高于入舱前( t＝-4.700， P＝0.018)。 结论:高压条件下，对潜水员进行机体负荷的监测对保障作业安全具有重要的意义。心率与RPE的联合监测能更精准地反映机体负荷，有助于更好地保障潜水作业安全。

abstractsObjective:To monitor and analyze the divers’ body load during hyperbaric exposure in deep heliox saturation diving at sea, so as to provide reference for safeguarding the safety and health of divers.Methods:The heart rate and rating of perceived exertion (RPE) of the divers were taken to monitor their body loads and the results were analyzed.Results:The heart rates of the four divers were stable. At 6: 30 (63 m) on the third day of decompression, diver 1 had a very low heart rate of 43 beats/min and diver 3 had a heart rate of 53 beats/min. There was no statistically significant difference in the mean heart rates of divers during saturation exposure and each time point of decompression with those before entering the cabin. The overall RPE results of divers ranged from 6 to 16 points, and the overall trend of development was consistent with the pressure change; the highest load was shown in the stage from 100 m stable pressure to the end of excursion diving, while the loads in other stages were relatively small. The mean value of RPE before entering the cabin was slightly higher than that in the pressurized stage, and it reached the peak in the excursion diving stage and then remained stable in the decompression stage. The RPE results of divers in the second diving bell at the end of excursion diving stage were significantly higher than those before entering the cabin ( t=-4.700, P=0.018). Conclusion:It is of important value to guarantee the operation safety by monitoring the divers’ body loads under high pressure. The combination of monitoring heart rate and RPE results can accurately reflect the body load and is conducive to the safety of diving operation.