Evaluation of the Effect of Rapid Reconstruction of Heat Tolerance of Officers and Soldiers with Heat Illness

HE Longping; DENG Xingping; WAN Xiaolei; YU Yongchun; ZHONG Lincui; SONG Qing; SONG Jingchun

doi:10.13730/j.issn.2097-2148.2025.08.009

Abstract：Objective To evaluate the effect of rapid reconstruction of heat tolerance of officers and soldiers with heat illness.Methods Ten healthy soldiers were selected as the control group and 25 officers and soldiers after recovery from heat illness were selected as the heat illness group,the heat tolerance reconstruction training was carried out in an artificial heat room(40 ℃,40％relative humidity)for 5 d.The duration and distance of heat tolerance training,the in-crease rate of tympanic membrane temperature,the increase rate of heart rate and physiological stress index(PSI)were recorded in the control group and the heat illness group.The laboratory indexes of the two groups before and after train-ing were detected,including the classical coagulation function tests,four new coagulation tests and thromboelastogram(TEG)test parameters.Results In the heat illness group,the exercise time and distance on the fifth day of training were significantly longer than those on the first day of training(P＜0.05),and the PSI on the fifth day was significantly lower than that on the first day of training(P＜0.05).Compared with the first day of training,the increase rate of tympanic membrane temperature and heart rate in the heat illness group decreased significantly after the fifth day of training(all P＜0.05).There was no significant difference in PSI on the fifth day of training between the heat illness group and the con-trol group(P＞0.05).Compared with before training,the activated partial thromboplastin time(APTT)of the heat ill-ness group on the fifth day of training was significantly longer,fibrin degradation products(FDP)significantly decreased and antithrombin(AT)significantly increased(all P＜0.05).Conclusion A 5-day heat tolerance training in the artificial heat room can restore the heat tolerance of heat illness patients to the level before heat illness,and reduce the effect of heat stress on coagulation function.