Predictors of new recruit reduction in common military subject training under high altitude environment
LUO Kai1, TANG Qianjun2, WANG Yong2, YIN Haojun1, and NIE Shanhua3
1. Department of Nephrology, 2. Department of Health Service, 3. Department of Outpatient, Hubei Provincial Corps Hospital of Chinese People’s Armed Police Force, Wuhan 430061, China
Abstract：Objective To explore the relative predictive factors of new recruit reduction in common military training under high-altitude environment. Methods Sixty-four new recruits of a unitof Chinese People’s Armed Police Force who entered the army in March 2021 were selected as the research objects, and the 3-month training period was taken as the observation period. According to whether they completed the common training subjects on time, the new recruits were divided into timely group (n=38) and delayed group (n=26). Data on training performance, injury, illnesses and downsizing were collected and compared between the two groups. Objective assessment measures included salivary cortisol and testosterone, step count, cardiopulmonary function and muscle endurance. The subjective indicators were evaluated by questionnaires for depression, anxiety and stress. The generalized linear regression model was used to evaluate each observation index of the two groups. Results Compared with the delayed group, the common military subjects training scores of the recruits in the timely group were significantly improved, and the difference was statistically significant (P<0.05). At the first week of training, compared with the delayed group, the steps and VO2 max values of recruits in the timely group significantly increased, and the contents of salivation creatine kinase and interleukin-6 in the recovery period significantly decreased, with statistical significance (P<0.05). At the 12th week of training, compared with the delayed group, the scores of depression, anxiety and stress in the timely group were significantly reduced, and the differences were statistically significant (P<0.05). The risk factors included delayed completion of training and higher salivary cortisol content before bedtime (RR=3.26, 2.03, P<0.05), and the protective factors included higher salivary testosterone content and VO2 max (RR=0.98, 0.80, P<0.05). The risk factors for deviating paths during the training period included injury, higher salivary cortisol content 30 min after waking, higher depression and stress scale scores (RR=4.03, 1.27, 1.07, 1.11, P<0.05). Protective factors included higher testosterone concentration, higher step count, and VO2 max (RR=0.99, 0.99, 0.85, P<0.05). Conclusions In the new recruit training, higher testosterone concentration and higher physical fitness level before joining the army can effectively reduce the risk of training injuriesand training loss. Managers use subjective and objective evaluation methods to continuously monitor adverse reactions, which is helpful to predict the risk of maladaptation of recruits' training, so as to reduce injuries and ensure the completion of new recruits' training.
罗凯, 汤前军, 王勇, 尹浩军, 聂善化. 高海拔环境下军事共同训练科目中新兵减员的相关预测因素[J]. 武警医学, 2023, 34(10): 869-873.
LUO Kai, TANG Qianjun, WANG Yong, YIN Haojun, andNIE Shanhua. Predictors of new recruit reduction in common military subject training under high altitude environment. Med. J. Chin. Peop. Armed Poli. Forc., 2023, 34(10): 869-873.
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