Military training injuries restrict the improvement of military combat effectiveness and increase a large number of unnecessary expenses . At present, the armies of all countries in the world attach great importance to the occurrence of training injuries, and have carried out a series of related studies [5–8]. However, most studies were limited to training history, injury history, smoking, age, gender, and BMI, These risk factors for injury are mostly individual characteristics that are often difficult to change. FMS can effectively screen out the dysfunction and asymmetry of subjects during movement [10, 11], therefore, targeted intervention can theoretically reduce the occurrence of training injury.
The incidence of military training injuries is a key indicator to evaluate the effectiveness of intervention measures, Coppack  and Sharma  pointed out that effective intervention measures for training injuries should be targeted at specific injury mechanisms. In the study, there was no statistical difference in the FMS score between the two groups before training. After training, the FMS score of the Group A was 16.23 ± 2.09, which was higher than that of the Group B 15.03 ± 2.09 (P < 0.05). The incidence of military training injury in the Group A was 20.95% lower than that of the Group B (44.02%, P < 0.05). It indicated that FMS intervention is effective to improve the FMS score and reduce the incidence of training injury. Bushman et al.  pointed out that FMS score could be a risk factor for the occurrence of military training injuries, and the establishment of FMS archives for recruits preparing for military training could provide information for the future risk management strategies of this population.
It has been reported in previous literature [18–20] that when FMS score is lower than 14 points, the potential probability of training injury will increase.O'Connor  found that when the FMS score of trainees was lower than 14, the probability of training injury increased by 1.91 times. Brushoj et al.  also pointed out that when the flexibility of the body is reduced and the muscle strength is asymmetrical, rough military training is difficult to change the mobility and stability of the body without increasing the compensation of the body and the probability of injury. In this study, by comparing and analyzing the occurrence of training injuries with different FMS scores, the correlation between FMS scores and the occurrence of military training injuries was further confirmed ( Table 4), which is consistent with the views of the above-mentioned scholars. Therefore, it is feasible to predict the occurrence of military training injury based on FMS evaluation system.
Another finding of the study was that 209 recruits (51.86%) (Table 5) had FMS scores below the 14 cutoff point, which is worrisome and implies that these recruits have a potentially higher incidence of military training injuries. Bock et al.  pointed out in their study that FMS scores are related to the performance of tactical crowd on tasks, and police officers with lower FMS scores perform worse in defensive tactical tasks.Stanek pointed out that firefighters require to practice a variety of functional movements, which can lead to a safer and more effective performance. Therefore, based on the current research results, it is necessary to actively carry out FMS testing and timely targeted intervention in the process of military training.
Although our study has reached some conclusions, there are the following limitations.Firstly, restricted by the training conditions, it is difficult for the subjects to ensure the homogeneity in training intensity and training time. Secondly, a prospective study design might have recorded a higher incidence of training injuries due to increased awareness of injury in the control subjects.At last, The individual intervention measures of FMS and the effectiveness of the system in preventing military training injuries still need to be demonstrated with large sample.