Early Warning System Of Military Training Injuries

Military training is one all the principals of military task in peacetime. Especially along with stepping up preparations for a potential conflict in the Taiwan Strait and practicing of the"outline of military training and examining", troops'training intensity is enhanced gradually, which putted forward higher request to prevention and cure of training injuries. At the present time, troops around the world increase the intensity and difficulty of military training in varying degrees, resulting in high incidence rate of military training injuries that influenced training passion. Hence, to study the prevention and cure of military training injuries has become the keystone to each nation.In our troops, the incidence rates of military training injuries range from 30% to 40%. Among the total military training injuries, stress fracture or fatigue fracture is the most common. Stress fracture has an important influence on nonbattle depletion of numbers, and in each arms the largest research on training injuries is stress fracture. The studies on stress fracture are mainly in tibia, fibula and femur. In domestic and foreign, pertinent literatures show that the incidence rates of stress fracture of the lower limbs range from 15% to 30%. Therefore, the fundamental studies on the estimation of stress fracture are very significant to improve our troops'training efficiency and reduce training injuries.Based on domestic and foreign studies, the study is assessed stress fracture,proceeded from the mechanism of stress fracture with the analytical method of muscle fatigue and muscle cumulative fatigue, employs the EMG signal processing method, and uses rabbit as object of study, attempting to develop the fundamental study on stress fracture of lower limbs tibia based on analytical and processing method of EMG signal.This research work had been carried out from the six aspects:1. Summarized the progress of domestic and foreign related researches. ECT is the key standard of assessing stress fracture, but it is too expensive to do a ECT examination with a special equipment,so we could not use ECT examination as routine examination means. We proved the feasibility of assessing stress fracture of tibia in rabbits by using DSP of EMG signal;2. Aiming directly at the 50Hz power-line interference in EMG, a new LMS adaptive filter algorithm was taken for designing adaptive wave-trap which could cancel the 50Hz power-line interference in EMG effectively and we could acquire better filtered EMG. Before EMG analyzing we preprocessed EMG to reduce various noise generally, which was extremely important to subsequent processing. If preprocessing method was appropriate, useful information and essential pattern in EMG would be acquired by subsequent analysis. Otherwise, the noises would interfere and mislead the following EMG analysis and processing;3. Designed and developed the experiment of analysis of muscle fatigue based on EMG signal processing. Found the time domain characters and frequency domain characters. Employed JASA to carry out the analysis of muscle fatigue;4.Designed and developed the experiment of analysis of muscle accumulated fatigue based on EMG signal processing. On the foundation of the experiment of analysis of muscle fatigue based on EMG signal processing, the analysis of muscle accumulated fatigue was accomplished;5. Setted up an experimental model of stress fracture of tibia in rabbits by applying ECT examination that was considered as the key standard of assessing stress fracture. Rabbits were daily put into a special set,in which the rabbit could be forced to jump and run through giving pulse electric current.The stress fracture in rabbit was diagnosed by ECT periodically. The stress caused by jumping and running continually acted on the muscle and skeleton, then damaged the muscle and skeleton, and ultimately caused stress fracture of tibia in rabbits;6. Tried to develop the fundamental study on assessing stress fracture of tibia in rabbits by employing analytical and processing method of EMG signal based on the experimental model of stress fracture of tibia in rabbits. The main mechanism of stress fracture was muscle fatigue. It was generally agreed that: athletic sports make the muscle fatigue, continually athletic sports make fatigue accumulated, so the muscle fatigue accumulating the protection of muscle to skeleton was weakened accordingly. It tended to cause stress fracture to skeleton under stress force without buffering of muscle. We could use the time domain and frequency domain character of EMG signal to estimate and analyze muscle fatigue and muscle accumulated fatigue, thus, we tried to assess stress fracture of tibia in rabbits by using analytical and processing method of EMG signal.This paper also has the following innovations:1. Employed EMG signal to assess stress fracture, which was the first time in China;2. It was different from previous epidemiologic study to assess stress fracture by using the theory and method of DSP.