Objective:To investigate the effect of core strength training based on total resistance exercise (TRX) for the flying personnel with nonspecific low back pain (NLBP).Methods:Flying personnel with NLBP who recuperated in Air Force Healthcare Center for Special Services Hangzhou from October of 2019 to June of 2021 were selected. They were divided into test group and control group by simple random sampling. The test group received 4 weeks of TRX core strength training, and the control group received 4 weeks of traditional core strength training. The isokinetic muscle strength testing instrument was used to measure the muscle strength characteristics of lumbar and abdominal flexor and extensor muscle groups of the subjects. The differences in Visual Analogue Scale (VAS) and Oswestry Disability Index (ODI) were compared between 2 groups before and after training.Results:A total of 40 subjects were included with 20 cases in the test group and 20 cases in the control group, all of them were helicopter flying personnel. After training, the scores of VAS in both groups were lower than those before training ( t=22.01, 17.15, both P<0.001), and the VAS score of the test group was lower than that of the control group, with a significant difference ( t=6.55, P<0.001). After training, the ODI scores of subjects in both groups were lower than those before training ( t=32.05, 27.45, both P<0.001), and the score of the test group was lower than that of the control group, with a significant difference ( t=4.85, P<0.001). After training, the relative peak moment of lumbar and abdominal flexor and extensor muscle groups of the test group were higher than those of control group, and the differences were significant ( t=2.65, 2.41, 2.04, 3.31, P=0.026, 0.037, 0.047, 0.005). Conclusions:TRX core strength training can significantly improve the muscle strength of the lumbar and abdominal flexor and extensor muscle groups of flying personnel with NLBP, which can be used as a training program to prevent NLBP for flying personnel.

Objective:To investigate the effect of core strength training based on total resistance exercise (TRX) for the flying personnel with nonspecific low back pain (NLBP).Methods:Flying personnel with NLBP who recuperated in Air Force Healthcare Center for Special Services Hangzhou from October of 2019 to June of 2021 were selected. They were divided into test group and control group by simple random sampling. The test group received 4 weeks of TRX core strength training, and the control group received 4 weeks of traditional core strength training. The isokinetic muscle strength testing instrument was used to measure the muscle strength characteristics of lumbar and abdominal flexor and extensor muscle groups of the subjects. The differences in Visual Analogue Scale (VAS) and Oswestry Disability Index (ODI) were compared between 2 groups before and after training.Results:A total of 40 subjects were included with 20 cases in the test group and 20 cases in the control group, all of them were helicopter flying personnel. After training, the scores of VAS in both groups were lower than those before training ( t=22.01, 17.15, both P<0.001), and the VAS score of the test group was lower than that of the control group, with a significant difference ( t=6.55, P<0.001). After training, the ODI scores of subjects in both groups were lower than those before training ( t=32.05, 27.45, both P<0.001), and the score of the test group was lower than that of the control group, with a significant difference ( t=4.85, P<0.001). After training, the relative peak moment of lumbar and abdominal flexor and extensor muscle groups of the test group were higher than those of control group, and the differences were significant ( t=2.65, 2.41, 2.04, 3.31, P=0.026, 0.037, 0.047, 0.005). Conclusions:TRX core strength training can significantly improve the muscle strength of the lumbar and abdominal flexor and extensor muscle groups of flying personnel with NLBP, which can be used as a training program to prevent NLBP for flying personnel.

Objective:To study the strength characteristics of waist and abdominal flexor and extensor muscles of helicopter pilots in order to provide the basis for waist and abdominal strength training, endurance training and prevention of the lumbar injury.Methods:Seventy-eight male helicopter pilots, whose average age was 38.9±7.5 yrs, height was 173.3±3.0 cm, weight was 72.7±7.7 kg and BMI was 24.2±2.2 kg/m 2, were selected as subjects. Strength characteristics and work of waist and abdominal flexor and extensor muscles of helicopter pilots were detected with 2 angular velocities of 60°/s and 180°/s by using Isomed 2 000 Isokinetic Test System. The peak torques and the relative peak torques of flexor and extensor muscles were compared under same angular velocity and between different angular velocities. The difference of peak torques of flexor and extensor and the relative peak torques of flexor and extensor were compared between age groups (20-39 yrs and 40-59 yrs). Results:At the same angular velocity, the peak torque and relative peak torque of the waist and abdominal extensor muscles of helicopter pilots were higher than those of the flexor muscles ( t=5.43-8.90, P<0.01). The peak torque and relative peak torque of the waist and abdominal extensor and flexor muscles reduced with the increasing of angular velocity ( t=11.36-12.19, P<0.01). The peak torque of the waist and abdominal extensor and flexor muscles in significantly reduced with the increasing of age, but the relative peak torque of the waist and abdominal flexor and extensor muscles reduced, and the difference was statistically significant ( P<0.05 or 0.01). The qualification rate of peak moment ratio was very low, and the balance of flexor and extensor muscles was weakened. Waist and abdominal extensor muscle endurance was weaker than flexor muscle endurance, but the differences was not significant. Conclusion:It is suggested that we should scientifically strengthen the strength training of flexor muscles and the endurance training of extensor muscles, so as to improve the balance of flexor and extensor muscles, and to slow down the decline of lumbar and abdominal muscle strength with age growing.

Objective:To study the strength characteristics of waist and abdominal flexor and extensor muscles of helicopter pilots in order to provide the basis for waist and abdominal strength training, endurance training and prevention of the lumbar injury.Methods:Seventy-eight male helicopter pilots, whose average age was 38.9±7.5 yrs, height was 173.3±3.0 cm, weight was 72.7±7.7 kg and BMI was 24.2±2.2 kg/m 2, were selected as subjects. Strength characteristics and work of waist and abdominal flexor and extensor muscles of helicopter pilots were detected with 2 angular velocities of 60°/s and 180°/s by using Isomed 2 000 Isokinetic Test System. The peak torques and the relative peak torques of flexor and extensor muscles were compared under same angular velocity and between different angular velocities. The difference of peak torques of flexor and extensor and the relative peak torques of flexor and extensor were compared between age groups (20-39 yrs and 40-59 yrs). Results:At the same angular velocity, the peak torque and relative peak torque of the waist and abdominal extensor muscles of helicopter pilots were higher than those of the flexor muscles ( t=5.43-8.90, P<0.01). The peak torque and relative peak torque of the waist and abdominal extensor and flexor muscles reduced with the increasing of angular velocity ( t=11.36-12.19, P<0.01). The peak torque of the waist and abdominal extensor and flexor muscles in significantly reduced with the increasing of age, but the relative peak torque of the waist and abdominal flexor and extensor muscles reduced, and the difference was statistically significant ( P<0.05 or 0.01). The qualification rate of peak moment ratio was very low, and the balance of flexor and extensor muscles was weakened. Waist and abdominal extensor muscle endurance was weaker than flexor muscle endurance, but the differences was not significant. Conclusion:It is suggested that we should scientifically strengthen the strength training of flexor muscles and the endurance training of extensor muscles, so as to improve the balance of flexor and extensor muscles, and to slow down the decline of lumbar and abdominal muscle strength with age growing.

Objective To observe the ultrastructure location of Huntingtin-associated protein 1(HAP1) in rat adrenal medulla and the effect of cold stress on the expression of HAP1 in rat adrenal medulla. Methods Fourteen healthy male Wistar rats were used in the present study and among them two rats were used for immune electron microscopy and twelve rats for cold stress experiment. In the cold stress experiment, animals were divided into control and cold groups randomly with six rats in each group. During the experiment, rats were housed in a room at the temperature of 4℃ for 12 hours and then immunohistochemistry and Western blotting were used to measure the expression of HAP1 in adrenal medulla. Results By using the immune electron microscopy, the results showed HAP1 was located on the external membrane of secretory vesicles of adrenal medulla and their membranous organelles. The expression of HAP1 in adrenal medulla of cold group significantly decreased as compared with that of control group ( P <0.01). Conclusion HAP1 might be related with the adrenal medulla cells endocrine granula and involved in the transmission and release of adrenaline or noradrenaline in secretory granule.

Objective: To study marital gratification (MG) of pilots and their w ives, as well as psychosocial factors in their family so as to provide a backgro und for counseling about pilots. Method: Two hundred and thirty -eight families o f pilots were collected. The pilots and their wives were tested respectively by SCL-90, EPQ, Olson Marital Quality Inventory, Stressful Life Events Scale and So cial Support Rating Scale. Results: There was significant relat ionship between M G and personality, mental health, stressful life events, social support of both pilots and their wives'. Marital gratification of pilots with illness was worse than that of their healthy colleagues. Multiple factor analysis showed that the main factors contributed to MG of pilots were wives' stressful life event. Concl usion: Marital gratification of pilots is a problem involves their famil y and social life.

Objective Through the conversion of civil passenger cars, to develop mobile psychological counseling and treatment centre that can afford field operation for our pilot. Methods The internal structure of 28-Seat-MQ6798 type King Dragon bus was rebuilt by installation of equipment related to psychological intervention, the development of psychological intervention plans, the broad participation of military exercises, force of mental health and education, the actual of sudden catastrophic events, and according to the verification results, field psychological counseling and treatment vehicle and psychological intervention plans were verified. Results The field psychological counseling and treatment centre exclusively includes anterior cabin, hinder cabin, storage rooms and psychological testing and psychological intervention equipment, which can be constituted not only the exchange platform of psychological block aid and information exchange on wartime, popularizing mental health knowledge for officers and soldiers at ordinary times, but also the intervention platform of catastrophic events, anti-terrorism and appeasing confusion and violence. Conclusion The field ambulance is necessary for keeping the mentality health of pilots under the wartime in the future.