部队强度训练时的WGT阈值与活动允许时间

Threshold values of wet globe temperature(WGT)and permissbletimes of exercise during intensiye working and training for troops

研究了ＷＧＴ与人体生理反应之间的关系，为热环境强度作训人员提供其军事活动允许时间值。结果：（１）短期强度作训时，在相对短的时间内，生理反应即达最大应激水平；（２）生理反应随着运动速度的加快（或增加运动强度）而增强；（３）实验结束时的ＨＲ、Ｔｒｅ、出汗量，Ｉ组为１７８±１４ｂ／ｍｉｎ、３９．３±０．６℃、１．３２１±０．１９６／ｈ，Ⅱ组为１８２±１２ｂ／ｍｉｎ、４０．０±０．４℃、１．６３９±０．２９１／ｈ，Ⅲ组为１６３±１２ｂ／ｍｉｎ、３８．３±０．６℃、１．６７１±０．３０７１／ｈ．依据上述结果，作者推荐军事活动允许时间，Ⅰ、Ⅱ、Ⅲ组应分别控制在８８、７４和２８ｍｉｎ。

The purpose of this paper is to provide the permissible military exercise times for men workingand training in intensive hot environments by studying the relationships between WGT and physiologicalresponses of human body, 68 fit adult males vvere divided into 3 groups.There were 14 subjects in groupⅠ,22 in group Ⅱ,and 32 in group Ⅲ.The experiments were carried out in frontier guards in the tropicsduring summer.During the experiments,physiological parameters such as heart rate(HR),rectal tempera-ture(Tre),sweating rate etc. were measured. The results showed that(1)the physiological responses cameup immediately to maximal stress level in relatively short time during intensive working and training,(2)the physiological responses increased along with the picking up speed of exercise or the increasing exerciseintensity,(3)at the end of experiments,the HR,Tre and sweating rate were 178±14b/min;39.3±0. 6℃,1.321±0.196/h;182±12b/min,40.0±0.4℃,1.639±0.291/hand 163±12b/min,38.3±0.6℃,1.671±0.307/h for groups Ⅰ,Ⅱ and Ⅲ respectively,(4)on the basis of the physiological responses of humanbody,it is suggested that the permissible military exercise times be controlled in 88,74 and 28 min forgroups Ⅰ,Ⅱ and Ⅲ respectively.