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为进一步提高锻炼获得的热习服水平，在行军和越野单项锻炼的基础上，采用了高温下行军、越野联合锻炼的方法，现在了对耐热效果的影响。８名青年男子在于球温度（Ｔｄ）３２．７±１．５℃、三球温度指数（ＷＢＧＴ）２８．４±０．８℃室内进行模拟行军、越野联合锻炼９０ｍｉｎ，每天１次，２周内共锻炼１０～１２次。结果显示，直肠温度可降低０．６１℃，心率减少８．５ｂ／ｍｉｎ，出汗量减少０．２２０ｋｇ，ＰＳＩ降低０．６２０，收缩压和舒张压分别略有增、减，脉压和每搏量增大，每分量受心率影响以至锻炼中稍降而锻炼终增加．高温（３７℃）踏车标准试验证明，锻炼期后以上各项指标较锻炼期前都呈现明显改善，说明联合锻炼提高了机体对更高热浪的应激能力。联合锻炼获得的热习服水平不仅显著优于同等锻炼时间和次数的单项行军锻炼，在体温调节、心血管功能和延长耐热时间等方面较之单项越野锻炼也有明显改善。
In order to further enhance the level of heat acclimatization obtained from exercise, based on the march and cross-country exercises, the method of marching and cross-country exercise at high temperature is used, and now the impact on the heat-resistant effect is taken. Eight young males were simulated march at a ball temperature (Td) of 32.7 ± 1.5 ℃ and a WBGT of 28.4 ± 0.8 ℃. The cross-country combined exercise was 90 min, once daily and two weeks Total exercise 10 to 12 times. The results showed that rectal temperature can be reduced by 0.61 ℃, heart rate decreased by 8.5b / min, sweating volume decreased by 0.220kg, PSI decreased by 0.620, systolic pressure and diastolic pressure increased slightly, decreased, pulse pressure and each Increased stroke volume, each component affected by the heart rate and training to slightly lower and exercise eventually increased. High temperature (37 ℃) treadmill standard tests show that after the exercise period above all indicators showed a significant improvement before exercise, indicating that the joint exercise to improve the body’s ability to heat the higher heat. The thermal acclimation level obtained by the combined exercise is not only significantly better than the single exercise of the same exercise time and frequency, but also significantly improved compared with the individual cross-country exercise in the aspects of body temperature regulation, cardiovascular function and prolonged heat-resistant time.