Objective To explore the causal relationship between family resilience and mental health in military personnel population.Methods A total of 204 military personnel were recruited from an army unit stationed in Western China with cluster convenience sampling.Family Resilience Scale(FRS)and Symptom Checklist 90(SCL-90)were used to survey them twice,in an interval of 4 months.Amos 26.0 was applied to construct a cross-lag model and analyze the data.Results After controlling mental symptoms from the first survey,family resilience in the first measure significantly predicted mental symptoms in the second measure(β=-0.14,P＜0.05).After controlling for family resilience from the first survey,mental symptoms in the first measure significantly predicted family resilience in the second measure(β=-0.13,P＜0.05).Conclusion The relationship between family resilience and mental health is mutually causal in military personnel,and one predicts the other one.Our findings highlight the key dimensions of the relationship between the two.

Objective: To analyze the impact of parental sports concept and behavior on physical activity in preschool children, so as to provide a foundation for future guidance on fostering childrens physical activity within the family context. Methods: From November to December 2020, a clustered convenience sampling method was employed to conduct surveys, and a total of 283 children were selectal from one kindergarten each in Beijing, Shenyang, and Xian. Participating children wore ActiGraph GT9X accelerometers continuously for one week to collect data on different intensity levels of physical activity. Physical Activity afterschool Questionnaire for Preschooler (P-PAQ) was utilized to assess parental sports concept and behavior. The gender differences in physical activity level and physical activity compliance rate were analyzed by using ttest, Mann-Whitney U test, and Chisquare test; and the relationship between parental exercise concepts and behaviors and physical activity of preschool children was analyzed using Spearman rank correlation analysis and multiple linear regression analysis. Results: Parental sports concept was significantly positively correlated with average daily moderatetovigorous physical activity (MVPA) and total physical activity (TPA) in children (r=0.12-0.16, P<0.05). Parental sports behavior was significantly positively correlated with childrens average daily TPA (r=0.25, P<0.05). Multiple linear regression revealed that parental sports concept was positively correlated with average daily MVPA and TPA in both boys and girls (B=0.65-0.83), while parental sports behavior only was positively correlated with boys average daily MVPA and TPA (B=0.24-0.25)(P<0.05). Conclusions Parental sports concept and behavior can impact physical activity levels in preschool children, exhibiting gender differences. Future guidance on physical activity in family upbringing should consider both parental sports concept and behavior, and pay attention to the influence of childrens gender.

Objective:To collect the Internet news about "sudden death", analyze its characteristics and resuscitation effects, so as to provide reference for formulating intervention strategies.Methods:The Internet was used to search for "sudden death" and "cardiac arrest" on "Baidu" and "360" websites. Reports of sudden death events were collected from January 2013 to December 2022. The age, gender, characteristics of sudden death, implementation characteristics of cardiopulmonary resuscitation (CPR), and pre-hospital and final clinical outcomes of sudden death patients were recorded and analyzed. Subgroup analyses were performed for pre-hospital and final clinical outcomes. Unconditional multivariate Logistic regression analysis was used to screen the related factors affecting the pre-hospital and final clinical outcomes in patients with sudden death.Results:177 news reports were finally confirmed, involving 177 sudden death patients, including 152 males (85.9%) and 25 females (14.1%), aged (37.27±16.82) years old, and 53.1% in the 16-45 years old group. Triggering factors included strenuous exercise (29.9%), heart disease history (7.9%), overwork (6.2%), staying up late and insomnia (4.0%), activation of emotion (2.8%), and no obvious inducement (48.0%). After on-site first aid, 104 cases (58.8%) achieved restoration of spontaneous circulation (ROSC) before hospital admission, and 18 cases (10.2%) recovered consciousness. After clinical treatment, 109 cases (61.6%) achieved ROSC, 86 cases (48.6%) recovered consciousness, and 22 cases (12.4%) did not report the final outcome. Subgroup analysis showed that compared with patients who achieved pre-hospital ROSC ( n = 104), sudden death in non-ROSC patients ( n = 73) mainly occurred during sleep, in residence and without immediate CPR, full CPR, or automated external defibrillator (AED); and patients who ultimately did not recover consciousness clinically ( n = 91) showed similar characteristics compared with patients who recovered consciousness ( n = 86). Multifactorial Logistic regression analysis showed that immediate CPR [pre-hospital ROSC: odds ratio ( OR) = 8.06, 95% confidence interval (95% CI) was 2.36-27.46; final recovery of consciousness: OR = 9.10, 95% CI was 2.46-33.68] and AED defibrillation (pre-hospital ROSC: OR = 36.31, 95% CI was 4.53-291.19; final recovery of consciousness: OR = 3.53, 95% CI was 1.45-8.61) facilitated pre-hospital achievement of sudden death patients ROSC and final recovery of consciousness. Conclusions:Out-of-hospital sudden death mainly occurs in young people, and vigorous exercise is one of the potential factors for out-of-hospital sudden death, with nearly half having no obvious cause. Immediate and rapid CPR and defibrillation are the simplest and most effective on-site first aid methods. Strengthening public CPR and defibrillation education and training, and advocating healthy lifestyle are effective ways to improve the survival rate of sudden death and reduce the occurrence of sudden death. Based on practical clinical rescue experience, the implementation of bystander CPR by medical personnel is also a factor that cannot be ignored in affecting the clinical outcomes of sudden death patients.

Objective:To evaluate the effect of dexmedetomidine-based anesthesia on cerebral oxygen saturation in the patients undergoing total laparoscopic hysterectomy.Methods:Fifty American Society of Anesthesiologists Physical Status classificationⅠorⅡpatients, aged 20-64 yr, undergoing elective total laparoscopic hysterectomy, were divided into 2 groups ( n=25 each) using a random number table method: conventional group (C group) and dexmedetomidine group (D group). Bilateral regoinal oxygen saturation (rSO 2) was monitored using a cerebral oxygen saturation monitor. In D group, dexmedetomidine was intravenously infused as a bolus of 0.5 μg/kg before anesthesia induction, and 10 min later dexmedetomidine was then given by an infusion of 0.5 μg·kg -1·h -1 until 30 min before the end of operation. The equal volume of normal saline was given instead in C group. The remaining anesthesia regimen was the same in two groups. The maximum (LrSO 2max, RrSO 2max) and minimum (LrSO 2min, RrSO 2min) of bilateral rSO 2 were recorded from entry to 2 min after induction (D 1), from >2 min after induction to completion of tracheal intubation (D 2), from completion of tracheal intubation to the end of skin incision (D 3), from skin incision to completion of pneumoperitoneum (D 4), from pneumoperitoneum to completion of Trendelenburg position (D 5), within 20 min of Trendelenburg position (D 6), >20-40 min of Trendelenburg position (D 7), >40-60 min of Trendelenburg position (D 8), and from >60 min of Trendelenburg position to 10 min after return to supine position (D 9). The occurrence of 60% baseline value 0.05). Compared with C group, the LrSO 2min, LrSO 2max, RrSO 2min, and RrSO 2max were significantly increased in D 4-D 8 periods in D group ( P<0.05). No bilateral rSO 2 <75% baseline value was found in group D. Conclusions:Dexmetomidine-based anesthesia can elevate intraoperative rSO 2 in the patients undergoing total laparoscopic hysterectomy.

Objective: To establish the norm of the Physical Activity afterschool Questionnaire for Preschooler(P-PAQ) in urban areas of China, so as to provide a basis for graded guidance from the family perspective and to improve children s physical activity levels. Methods: From October 2020 to January 2021, 6 267 children aged 3-6 years old were recruited from 40 kindergartens in eight cities across six major administrative regions by stratified cluster sampling, and the P-PAQ initially developed by the researchers of this study were completed by the primary caregivers. The questionnaire was administered to collect data relating to the amount of physical activity undertaken by the preschoolers, and the norm was determined by quartiles. Data relating to parental concepts of sports and parental behavior were assessed by calculating mean scores in order to establish the norm. Results: Among preschoolers in urban areas, the M(P 25 ，P 75 ) of total physical activity time (min/day), moderate-to-vigorous physical activity time (min/day), outdoor time (min/day) and screen time (min/day) on school days outside kindergarten and on weekends were 84 (54,120), 22 (8,40), 12 (0,24) and 18 (6,30), and 170 (115,240), 60 (30,95), 90 (35,120) and 30 (20,60), respectively. When the score of parents sports concept and behavior (total score of 40) were≥34, 29-<34, 24-<29, <24, it was defined as four levels about above medium, medium, lower medium and lower, respectively. And for two dimensions，when the score of parental sports concept were ≥19, 17-<19, 15-<17, <15，and the score of parental behaviors were ≥16, 12-<16, 8-<12, <8, it was defined as four levels about upper medium, medium, lower medium and lower, respectively. Conclusion The norm of extracurricular activities among preschool children in Chinese cities has good representativeness and appropriate threshold values, which could provide a valuable reference for early assessment, as well as guidance in relation to out-of-school physical activity behaviors among children aged 3-6 years old.

Objective:To develop an information system for testing radiological protection that can interface with National Radiation Health Information Platform/Medical Radiation Monitoring Subsystem and to improve the testing efficiency.Methods:Complying with the relevant national regulations and standards, the analysis was carried out of demand investigation and system modeling. An information system for testing radiological protection was established using B/S architecture, comprising three modules such as testing, audit and system management. The users at four levels were set of administrator, inspector, auditor and report issuer.Results:Based on test result, the developed information system has been shown to realize the informatization of the whole process from filling, auditing, issuing, issuing of the testing report to data uploading, with improved testing efficiency.Conclusions:The developed information system for testing radiological protection can improve the testing efficiency, and can be successfully interfaced with the National Radiation Health Information Platform/Medical Radiation Protection Monitoring Subsystem.

Objective: To analyze the school adaptation and behavioral performance of the first batch of students who return to school during the COVID-19 epidemic, and to provide a theoretical basis for further development of corresponding intervention measures. Methods: The method of cluster sampling was adopted to conduct anonymous questionnaire survey on the first batch of college students who have returned to a certain university. The survey contents included the basic information of the students, the adaptability of the school after returning to school and the corresponding behavior performance. Results: Male students reported high lever of satisfaction than female students on the dormitory environment health (t=10.28, P<0.01), but low satisfaction on school security and logistical support (t=2.26, P=0.02), rural students marked higher score than urban students for the school closed management system (t=2.82, P=0.01), in terns of school security, Logistics, the degree of school s attention to the epidemic prevention and epidemic prevention, non only-child gave high score than the only children; In terms of their own behavior, the rate of seek medical treatment immediately when they develop COVID-19 related symptoms (68.1%) was lower than that of others (81.3%)(χ 2=223.88，P<0.01)；In addition, the percentage of respondents who chose to report COVID-19 related symptoms (79.5%) was lower than that of others (88.7%)(χ 2=97.49，P<0.01). A total of 2 671 college students (98.9%) were able to wear masks every day and 2 457 (90.9%) chose to improve their diet to improve their immunity. Conclusion The first batch of college students who return to school have a high level of satisfaction on school management, and can take active measures to adapt to the life back to school and commit self-protection, however targeted measures to are still needed further strengthen students health education.

Objective: To understand the current situation and influencing factors of Internet addiction among college students after returning to school during the COVID-19 epidemic, and to provide scientific basis for timely intervention measures to adjust the risk factors of Internet addiction. Methods: A cluster sampling method was adopted to conduct a questionnaire survey among 2 700 college students who firstly returned to college using general condition questionnaire and Internet Addiction scale. Results: The detection rate of Internet addiction disorder was 32.4% among returning college students, moreover, the detection rate of Internet addiction in male students(36.0%) was higher than that in female students (31.2%) (χ 2=5.42,P<0.05). The degree of Internet addiction was negatively correlated with the physical health score (r-s=-0.20) and mental health score (r-s=-0.24) of college students (P<0.01). Multivariate Logistic regression analysis showed that compared with introversion, neutral (OR=0.67, 95%CI=0.55-0.82) and extroverted college students (OR=0.59, 95%CI=0.48-0.74) were protective factors for Internet addiction; compared with no exercise, physical exercise ≥3 times or more per week (exercise 3-4 times：OR=0.67, 95%CI=0.51-0.87; ≥5 times：OR=0.67, 95%CI=0.50-0.90) were the protective factors for Internet addiction among college students; family loss during the epidemic was a risk factor for Internet addiction among college students (OR=1.34, 95%CI=1.12-1.60); the risk of Internet addiction was 2.13 times higher for college students who actively sought psychological help than for those who did not seek psychological help (95%CI=1.14-3.96); college students who did not want to go back to school had 1.50 times the risk of Internet addiction as those who did (95%CI=1.26-1.77). Conclusion The current situation of college students online behaviors during COVID-19 is not optimistic, and should arouse sufficient attention from society and universities. In addition, college students returning to school should take more physical exercises and psychological counseling to detect and intervene in psychological problems in time, reduce their psychological burden, and enhance their psychological quality.

Objective: To investigate the sleep quality and influencing factors of the first batch of college students returning to school during COVID-19 epidemic, so as to provide scientific basis for taking corresponding measures. Methods: An anonymous self-administered questionnaire survey was conducted among the first batch of college students returning from a certain university by cluster sampling, which included general demographic characteristics, Trait Coping Style Questionnaire (TCSQ) and Pittsburgh Sleep Quality Index(PSQI). Results: The detection rate of sleep disorders was 19.33%(522/2 701). The mother s education level was high school or technical secondary school or below(OR=2.24, 95%CI=1.47-3.41), never eat breakfast(OR=3.25, 95%CI=1.86-5.68), families were damaged during the outbreak (OR=1.48, 95%CI=1.17-1.87) and negative coping (OR=1.15, 95%CI=1.12-1.17) were risk factors for sleep disorders(P<0.05). Compared to having a very poor relationship with parents, the relationship between parents was average(OR=0.23, 95%CI=0.06-0.89), better(OR=0.23, 95%CI=0.06-0.87), very good (OR=0.19, 95%CI=0.05-0.74) were protective factors for sleep disorders(P<0.05). Exercise once or twice a week during the epidemic(OR=0.76, 95%CI=0.58-1.00), positive coping (OR=0.93, 95%CI=0.91-0.96) were protective factors for sleep disorders(P<0.05). Conclusion In this COVID-19 epidemic, the sleep quality of returning college students was affected to different extent, and the relationship between parents, sports, mother s education, breakfast habits, and family damage during the COVID-19 were factors affecting their sleep quality. Targeted psychological intervention measures should be given to returning college students in the early stage.

Objective: To test the effectiveness of psychological flexibility training on career adaptability among middle school students who undertook psychological courses based on acceptance commitment therapy and the adolescent mental flexibility model(DNA-V), and to provide a reference plan to improve the mental health of middle school students. Methods: This study recruited 110 junior high school students (60 boys and 50 girls) from a middle-school in Beijing. The students were randomly divided by class into a DNA-V face-to-face course group(offline group n=33), a DNA-V online course group(online group n=40), and a regular school psychology course group(control group n=37). Louise Hayes DNA-V intervention program was condensed into a six-hour middle-school DNA-V psychology curriculum. Using the Avoidance and Fusion Questionnaire for Youth and the Career Adaptability Scale, changes in psychological flexibility and career adaptability were measured before(T1), one week after(T2), and two months after (T3) the intervention. Results: Linear mixed models were used for the analysis, while controlling for demographic variables. Psychological flexibility and career adaptability in the offline group were higher at T2 and T3 than at T1(psychological flexibility t=4.22, 3.11; career adaptablity t=3.05, 4.16, P<0.01), while the difference between T2 and T3 was not statistically significant. The psychological flexibility and career adaptability of the online group were not statistically significant at T1, T2, and T3. The psychological flexibility and career adaptability of the control group increased from T1 to T2(t=4.64, 2.47, P<0.05), but T3 decreased back to a level close to T1. Conclusion In terms of both psychological flexibility and career adaptability, the DNA-V face-to-face psychology course resulted in a retention period of at least two months.