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目的 探讨不同地区青年耐寒锻炼前后体能状态及冷适应能力变化情况,为按照新兵训练大纲施训提供科学依据。方法 随机选择黑龙江某部队来自寒区和非寒区的应征新兵各5 0人,分成2组,Ⅰ组(寒区新兵) ,Ⅱ组(非寒区新兵) ,于2 0 0 2年12月～2 0 0 3年2月按照新兵训练大纲内容进行耐寒锻炼,分别于训练前、训练3 0d、训练60d测定受试者的心率及PWC170 “次极限负荷”试验变化。结果 两组新兵的基础心率在训练各时段比较,差异均无显著性(P >0 . 0 5 )。Ⅰ、Ⅱ组组内比较,其第1次负荷后、第2次负荷后心率与基础心率的差值,以及PWC170 在训练3 0d、训练60d与新兵训练前比较以及在训练60d与训练3 0d比较,差异均有非常显著性(P <0 .0 1)。Ⅰ、Ⅱ组组间比较,在训练各时段,其第1次负荷后心率、第2次负荷后心率、2次负荷后心率的差值及PWC170 差异均无显著性(P >0 .0 5 )。结论 对来自不同地区的应征青年按照新训大纲实施耐寒锻炼,其体能明显增强,冷适应能力显著提高。
Objective To explore the changes of physical fitness and cold adaptability of youth in different areas before and after cold hard training, and provide a scientific basis for the training according to recruits training outline. Methods Fifty recruits recruits from a cold region and a non-cold region were randomly selected and divided into two groups: group Ⅰ (recruits in cold region) and group Ⅱ (recruits other than cold region), randomly selected in December 2002 In Feb. 2003, we conducted cold-resistant training according to the recruit training outline. The changes of heart rate and PWC170 “sub-limit load” test before training, 30 days of training and 60 days of training respectively were measured. Results The basic heart rate of two recruits was not significantly different between training sessions (P> 0.05). The difference between the first load and the second load of heart rate and basal heart rate of group Ⅰ and group Ⅱ, and the difference of PWC170 between training 30 days, 60 days before training and recruits’ training and between 60 days of training and 30 days of training The difference was significant (P <0.01). There were no significant differences in PWC170 and PWC170 between group Ⅰ and group Ⅱ after training for the first time, heart rate after the first load, heart rate after the second load, heart rate after the second load, ). Conclusion Applying cold-resistant training to recruited young people from different regions according to the new training outline significantly increases their physical fitness and significantly improves their cold-adaptability.