海拔高度对官兵军事作业能力的影响

 目的 探讨海拔高度对官兵军事作业能力的影响。方法 选取平原驻地海拔高度约50 m,高原驻地海拔高度3100、3650、4050 m武警某部官兵,依据GJB1337《士兵体能的测量和评价》,进行踏速为22.5 次/min和30 次/min的踏阶运动,采用Polar V800心率表测量静息心率和踏阶运动心率,测定官兵的体力劳动能力(physical work capacity,PWC170)、最大摄氧量、台阶指数。结果 随着海拔的升高,官兵有氧能力逐步下降,平原驻地官兵PWC170[(1276.9±229.6) kg·m/min]显著高于海拔3100 m[(994.0±230.1) kg·m/min]、3650 m[(962.4±226.7) kg·m/min]和4050 m[(759.2±154.1) kg·m/min],差异有统计学意义(P<0.05),其中高海拔驻地官兵中海拔4050 m PWC170 显著低于海拔3100 m和3650 m(P<0.05),而海拔3100 m和3650 m军人PWC170无统计学差异;平原驻地官兵静息心率低于高海拔地区军人(P<0.05),高原3个海拔的静息心率间无统计学差异;踏阶运动试验中平原官兵的运动心率显著低于高海拔地区运动心率(P<0.05),海拔4050 m官兵运动心率明显高于3100 m和3650 m;最大摄氧量、台阶指数结果显示,海拔越高,结果越低,且差异有统计学意义(P<0.05)。结论 随着海拔的升高,官兵体力劳动能力逐步下降,应采取有针对性的训练指导。

Influence of altitude on military operation ability of PAP officers and soldiers

Objective To explore the influence of altitude on the military operation ability of PAP officers and soldiers. Methods According to measurement and evaluation of soldiers (the national military standard GJB1337 ), the officers and soldiers at an altitude of about 50 meters on the plain and 3100 meters, 3650 meters and 4050 meters on the plateau were selected to perform step exercise with a step speed of 22.5 times / min and 30 times / min. The resting heart rate and step exercise heart rate were measured by polar V800 heart rate meter, and the PWC170, VO2 max, and step index of the officers and soldiers were determined. Results With the increase of altitude, the aerobic capacity of officers and soldiers gradually decreased. The results of PWC170[(1276.9±229.6) kg·M/min] on plain garrison were significantly higher than those in 3100 m [(994.0±230.1) kg·M/min], 3650 m[(962.4±226.7) kg·m/min] and 4050 m [(759.2±154.1) kg·M/min] (P<0.05). Among officers and soldiers on high altitude garrison, the results of PWC170 at 4050 m were significantly lower than those at 3100 m and 3650 m (P<0.05), and there was no significant difference in PWC170 between the altitude of 3100 m and 3650m. The resting heart rate of officers and soldiers stationed on the plain was significantly lower than that at high altitude areas (P<0.05), and there was no significant difference among the above three altitudes of the plateau. In the step exercise experiment, the exercise heart rate on the plain was significantly lower than that at the high-altitude area (P<0.05), and the exercise heart rate of officers and soldiers at 4050 m was significantly higher than that at 3100 m and 3650 m. The results of maximum oxygen uptake and step index showed that the higher the altitude, the lower the results, and the difference was significant (P<0.05). Conclusions With the increase of altitude, the military operation ability of PAP officers and soldiers gradually decreases.