Core muscle functional strength training for reducing the risk of low back pain in military recruits: An open-label randomized controlled trial / 中西医结合学报

BACKGROUND@#Core muscle functional strength training (CMFST) has been reported to reduce injuries to the lower extremity. However, no study has confirmed whether CMFST can reduce the risk of low back pain (LBP).@*OBJECTIVE@#This study identified the effects of CMFST on the incidence of LBP in military recruits.@*DESIGN, SETTING, PARTICIPANTS AND INTERVENTION@#We performed a prospective, open-label, randomized, controlled study in a population of young healthy male naval recruits from a Chinese basic combat training program. Participants were randomly assigned to either the core group or the control group. In additional to normal basic combat training, recruits in the core group underwent a CMFST program for 12 weeks, while recruits in the control group received no extra training.@*MAIN OUTCOME MEASURES@#At the beginning of the study and at the 12th week, the number of participants with LBP was counted, and lumbar muscle endurance was measured. In addition, when participants complained of LBP, they were assessed using the visual analog scale (VAS) and Roland Morris Disability Questionnaire (RMDQ).@*RESULTS@#A total of 588 participants were included in the final analysis (295 in the core group and 293 in the control group). The incidence of LBP in the control group was about twice that of the core group over the 12-week study (20.8% vs 10.8%, odds ratio: 2.161-2.159, P < 0.001). The core group had better lumbar muscle endurance at 12 weeks than the control group ([200.80 ± 92.98] s vs [147.00 ± 84.51] s, P < 0.01). There was no significant difference in VAS score between groups, but the core group had a significantly lower RMDQ score at week 12 than the control group (3.33 ± 0.58 vs 5.47 ± 4.41, P < 0.05).@*CONCLUSION@#This study demonstrated that the CMFST effectively reduced the incidence of LBP, improved lumbar muscle endurance, and relieved the dysfunction of LBP during basic military training.

Risk factors for stress fracture of lower limbs and future research direction / 中国组织工程研究

BACKGROUND: Stress fractures of lower limbs are common for recruits and athletes, and affect their training to different extent. OBJECTIVE: To summarize the risk factors for the occurrence and development of stress fracture of lower extremity, then to raise the awareness of stress fracture of lower extremity and provide ideas for its prevention. METHODS: A computer-based search was conducted in PubMed, WanFang and CNKI databases from January 2009 to July 2019 with the keywords of “stress fracture, fatigue fracture, overuse injury, risk factors, recruits” in English and Chinese, respectively. A total of 786 relevant articles were retrieved, and 76 articles were eligible for the inclusion criteria. RESULTS AND CONCLUSION: (1) Sex and history of stress fracture have been identified as risk factors for stress fracture. Future studies should be inclined to identify the specific roles of other risk factors in the development of stress fracture. (2) In addition, biomechanical factors are likely to affect the occurrence of stress fracture of the lower limbs of recruits. (3) Therefore, improving the abnormal biomechanical parameters of the lower extremity during the training of recruits can develop a method to prevent the stress fracture of the lower limbs, and reduce the incidence of stress fracture through appropriate management.

Impact of life events on mental health of recruits: The mediating effects of negative cognitive processing bias / 解放军医学杂志

Objective: To explore the relationship of life events, negative cognitive processing bias (NCPB) and mental health of recruits. Methods: The Life Events Scale (LES), NCPB questionnaire and Military Mental Health Scale (MHS) were used for investigation in 2193 recruits from a certain troop. The SPSS 22.0 software was used to analyze the data. T-test and ANOVA were adopted to explore the influence of demographic factors on the mental health of recruits. Correlation analysis was performed to investigate the relationship of life events and NCPB to the mental health of recruits. The influence of life events and NCPB on the mental health of recruits was investigated by regression analysis. The mediating effect analysis was conducted for in-depth discussing the influence of NCPB in life events on the mental health of recruits. Results: Male and highly educated recruits had significantly higher scores in mental health ability and quality (P<0.01, P<0.05). Scores of life events and NCPB total score and its factors were negatively correlated with the mental health ability and quality of recruits (r=-0.07-0.46, P<0.01), and positively correlated with the mental health status (r=0.08-0.45, P<0.01). The mental health status of recruits was predictable with negative events, negative atention bias and negative rumination bias in an interpretation rate of 24.1%. Path analytic model showed that NCPB mediated the relationship between life events and mental health of recruits. Conclusion: Life events and NCPB are closely related with the mental health of recruits, and NCPB acts as an intermediary between life events and mental health; reduces life events and NCPB is helpful in maintaining and promoting the mental health of recruits.

Functional training of core muscles preventing low back pain and improving core muscle function of recruits: An observational study / 第二军医大学学报

Objective To explore the significance of functional training of core muscles for preventing low back pain and improving core muscle function in recruits. Methods Healthy male recruits were enrolled from a naval training base and were randomly assigned to core muscle training group and conventional lumbar muscle training group. The recruits in the two groups received functional training of core muscles and routine training of lumbar and abdominal muscles for 12 weeks, respectively. The training procedure was 3-5 times a week and increased with training cycle, with 3 sets of actions being completed every time for 30 min. On the 4th, 8th and 12th weeks, rehabilitation physicians came into the base and investigated the incidence of low back pain of the recruits. Two fixed physicians carried out waist core muscle stability bridge test and waist and back core muscle endurance test on the 1st and 12th weeks. Results Totally 588 recruits were enrolled, including 295 recruits in the core muscle training group and 293 in the conventional lumbar muscle training group. The incidence of low back pain on the 12th week was significantly lower in the core muscle training group than that in the conventional lumbar muscle training group (1.13% [3/266] vs 6.07% [15/247], P=0.002). On the 12th week, the bridge and endurance of lumbar muscles were significantly increased versus those on the 1st week in the two groups, but the growth rate of the core muscle training group was significantly greater than that of the conventional lumbar muscle training group (all P<0.01). Conclusion Compared with traditional lumbar muscle training, functional training of core muscles more effectively prevents low back pain, enhances the lumbar and abdominal core muscle to maintain spinal stability, and improves back muscle endurance.

A case-control study of bone mineral density and its influencing factors in 2079 recruits / 军事医学

Objective To find out about the charateristics of bone mineral density(BMD)and its influencing factors among 2079 recruits.Methods Recruits of Armed Police Force in Tianjin were selected as subjects.Their BMD was measured with dual-energy X-ray absorptiometry(DXA).A normal group and low bone mineral density group were selected according to the results of bone mineral density and the methord of 1:1 case-control analysis.Questionnaires were used to investigate their dietary nutrition and lifestyles.One-way ANOVA,chi-square test and Logistic regression analysis were used to explore the influencing factors of BMD.Results In total,2079 military recruits underwent a DXA scan.Normal bone mineral density accounted for 44.78%,and T value was -0.36 ±0.62.Medium bone mineral density made up 50.51%, and T value was -1.57 ±0.38.Low bone mineral density accounted for 4.71%,and T value was -2.82 ±0.39.Single factor analysis suggested that body weight, BMI, movement time, sports venues, spending too much time online all had influences on bone mineral density.Multiariable Logistic regression analysis showed that high animal diet(OR=3.435), spending too much time online(OR=1.246)were the risk factors for bone density.Dairy consumption(OR=0.296)and movement time(OR=0.549)were positively associated with bone mineral density.Conclusion There is a low bone mass in the recruits.We suggest that scientific and standardized management,popularization of knowledge,healthy diet and living habits are necessary to promote good bone peaks.

Mediating effects of social inhibition on the relationship between rejection sensitivity and negative affect in army recruits / 中华行为医学与脑科学杂志

ObjectiveTo explore the relationship of rejection sensitivity,social inhibition and negative affect in army recruits.Methods358 recruits were measured with rejection sensitivity questionnaire,type D personality scale,and positive affect and negative affect scale.Results(1)The score of intimates' rejection sensitivity was highest(9.33±3.88),peers' rejection sensitivity was in the middle(8.59±3.27),teachers' rejection sensitivity was lowest(6.79±2.90),with statistical significance(F(2,355)=53.76,P<0.01).(2)Rejection sensitivity had significantly positive correlation with social inhibition(r=0.346,P<0.01).Negative affect had significantly positive correlation with rejection sensitivity (r=0.233,P<0.01) and social inhibition(r=0.351,P<0.01).(3)Social inhibition partially mediated the relationships between rejection sensitivity and negative affect(the value of mediating effect was 45.7%).ConclusionRejection sensitivity has direct effects on negative affect and indirect effects through social inhibition.

The multiple mediation effect of adult attachment on the relationship between borderline personality disorder and childhood trauma in recruits / 中华行为医学与脑科学杂志

Objective To explore the mediation effect of adult attachment on the relationship between childhood trauma and borderline personality disorder(BPD) in recruits.Methods Childhood trauma questionnaire-28 short form (CTQ-SF),adult attachment scale (AAS) and personality diagnostic questionnaire-4+ (PDQ-4+) were administered to 1 750 recruits in the autumn of 2013.Results The scores of physical neglect,emotional neglect,emotional abuse,sexual abuse,physical abuse,attachment anxiety,attachment close and dependence and BPD were 11.05±3.04,10.00±3.54,6.73±2.32,5.92±2.06,5.83± 1.97,3.02 ± ±0.53,3.19±0.44,2.45± 2.04,respectively.BPD had significantly positive correlation with childhood trauma and attachment anxiety (r=0.353,0.284,P＜ 0.01),and significantly negative correlation with attachment close and dependence(r=-0.198,P＜0.01).Childhood trauma,attachment close and dependence and attachment anxiety could positively predict BPD(F=142.172,P＜0.01),which could explain 19.6％ of the total variation.Structure equation model and Bootstrap test showed that childhood trauma not only directly predict BPD in recruits,but also indirectly predict BPD in recruit through attachment close and dependence and attachment anxiety (x2/df=11.472,RMSEA =0.077,NFI =0.943,RFI =0.901,IFI =0.948,TLI =0.902,CFI =0.948),and the mediational path through attachment close and dependence and attachment anxiety with the effect size were 10.8％ and 8.1％,and the total mediational effect size was 18.9％.Conclusion Adult attachment exerts a multiple mediation effect on the relationship between childhood abuse and BPD in recruits.

Psychological stress level and features of recruits in training camp / 中华行为医学与脑科学杂志

Objective To analyze psychological stress level and features of recruits in training camp.Methods Psychological stress self-evaluation test (PSET) was applied to 1 600 recruits in training camp.Results ①There were 64 recruits(64/1600,4％) who had high level of psychological stress(T score ≥70).②The psychological stress symptoms of recruits in training camp mainly manifested as increased alertness (87.7％),sleep deprivation (57.6％),mental and physical fatigue (48.7％) and nervous irritability (45.2％).③Psychological stress levels of recruits with different ages and different levels of self-feeling in camp had significant differences(P＜0.05).Conclusion Recruits in training camp have partly excessive psychological stress responses,targeted emergency decompression trainings should be carried out in recruits.

Psychosocial factors of suicide attitudes among new recruits in training camp / 中华行为医学与脑科学杂志

Objective To explore the psychosocial influencing factors of suicide attitudes among new recruits in training camp.Methods Cluster sampling was conducted and 5 200 new recruits in 11 training camps were investigated with suicide attitude questionnaire(QSA),symptom checklist 90(SCL-90) and self-designed questionnaire.Influencing factors associated with suicide attitudes were analyzed with muhiple linear regression analysis.Results The score of awareness of property of suicide behavior dimension of QSA were (3.71±0.58),and (2.77±0.47) of the attitude to the suicide dimension,(2.43±0.43) of the attitude to family members of the suicide dimension and (3.13±0.86) of the attitude to euthanasia dimension.The results of multiple linear regression analysis indicated that recruits who came from single parent family,had a history of family violence,had a introvert character,had poor emotional stability,had a history of psychiatrist visiting,took Sedatives more often,had more negative life events in past year,tended to use unhealthy cathartic method of emotion,had more difficulty in adjusting to the army life,had lower factor score of obsessivecompulsive symptoms in SCL-90,and higher factor score of depression and paranoia,tended to hold an admissive attitude to suicide behavior.Conclusion The recruits in training camp don' t accept suicide behavior as a whole,and their suicide attitudes were influenced by mental health states and many other psychosocial factors.Suicide prevention education should be targeted.

Mediating effects of positive mental characters on the relationship between avoidant personality dis-order and trait coping style in recruits / 中华行为医学与脑科学杂志

Objective To explore the relationship between avoidant personality disorder and trait coping style,especially the mediating effect of positive mental characters. Methods A sample of 8 500 male recruits was assessed with personality diagnostic questionnaire?4+( PDQ?4+) , positive mental characters scale for recruits(PMCS?R) and trait coping style questionnaire(TCSQ). Results The scores of avoidant personality disorder group were lower than control group on wisdom((3.41±0.77) vs (3.76±0.74)),courage ((3.62±0.76) vs (4.05±0.78)),humanity((3.59±0.75) vs (3.98±0.72)),justice((3.64±0.75) vs (4.02 ±0.76)),temperance((3.58±0.85) vs (4.01±0.83)),transcendence((3.77±0.72) vs (4.13±0.71)),posi?tive mental characters((3.60±0.66) vs (3.99±0.62)) and trait coping style((32.74±6.71) vs (36.61± 6.23)),while negative coping style score was higher than control group((30.87±6.91) vs (22.79±6.96)) respectively,with statistical significance( all P<0.01) . Avoidant personality disorder had significantly negative correlation with positive mental characters and trait coping style( r=-0.323,-0.320,all P<0.01) ,and signif?icantly positive correlation with negative coping style ( r=0.579, P<0.01). Positive mental characters had significantly positive correlation with trait coping style( r=0.548, P<0.01) ,and significantly negative corre? lation with negative coping style( r=-0.289, P<0.01). Hierarchy regression analysis showed that positive mental characters mediate the relationship between trait coping style ( positive coping style,negative coping style) and avoidant personality disorder ( the value of mediating effect was 50.07%,6.36%) . Conclusion ?Recruits’ avoidant personality disorder affects trait coping style not only directly,but also indirectly through positive mental characters.

A study on psychological stress and its influencing factors of recruits during training / 重庆医学

Objective To investigate the training of recruits′psychological stress and its relevant influencing factors ,so as to of‐fer scientific basis for the psychological training and psychological health education of recruits .Methods Questionnaire survey method was used and a total of 720 training of recruits in 2013 was sampled .The application of the stress response questionnaire (SRQ) ,eysenck personality questionnaire (EPQ) ,trait coping style questionnaire (TCSQ) ,symptom checklist (SCL‐90) were used to carry out the psychological test and analysis on these recruits .Results The total score of the SCL‐90 and the score of each factor were significantly lower than the norm of recruits in year of 2000(P0 .05) .According to what was shown in the related analysis ,the SCL‐90 total score .SRQ total score had significant positive correlation with emotional stability and negative coping style(P<0 .01) ,but had significant negative correlation with introversion‐extroversion and waste score(P<0 .01) ,and the total score of SCL‐90 had significant positive correlation SRQ to‐tal score(P<0 .01) .It was shown in the regression analysis that factors had significant predictive effect on the psychological factors of new soldiers during the training period respectively were as follow :negative coping ,stability ,introversion‐extroversion ,psychoti‐cism and whether they are the only child or not .The decisive coefficient of 5 variables was R2 =0 .558 ,F=163 .65(P<0 .01) .Con‐clusion The overall mental health of 2013 recruits training are in good condition ,individual mental health status ,personality traits and coping style training of recruits psychological stress are significant predictors .

Mediating effects of positive mental characters on the relationship between personality and depression in recruits / 中华行为医学与脑科学杂志

Objective To explore the relationship between personality and depression,especially to investigate mediating effect of positive mental characters.Methods A sample of 1 933 male recruits was assessed with eysenck personality questionnaire (EPQ),positive mental characters scale for recruits (PMCS-R) and self-rating depression scale (SDS).Results The scores of introversion-extroversion,psychoticism,neuroticism,positive mental characters and depression were 55.26±10.59,42.85±7.25,42.35± 11.67,3.80±0.64,0.45±0.11,respectively.There were correlations among personality,positive mental characters and depression in recruits (P＜0.05).Regression analysis indicated that introversion-extroversion,psychoticism and neuroticism predicted depression directly,and it could explain 42.6％ of the total variance (F=476.28,P＜0.05).Hierarchy regression analysis showed that positive mental characters mediate the relationship between personality (introversion-extroversion,psychoticism,neuroticism) and depression (the mediation effect was 0.22,0.19 and 0.11 respectively,P＜ 0.05).Conclusion Recruits' personality affects depression not only directly,but also indirectly through positive mental characters.

Adult attachment and impact of training on recruits: mediating effect of neuroticism and negative coping / 中华行为医学与脑科学杂志

Objective To examine the impact of stressful training on recruits and relationships with adult attachment,neuroticism and negative coping style.Methods 1 962 recruits were assessed with aduh attachment scale (AAS),impact of event scale-revised (IES-R),Eysenck personality questionnaire (EPQ) and trait coping style questionnaire (TCSQ).Results (1) 67.84％ of recruits reported the varying degrees of stress,and the total average of IES-R was 1.25±0.53.The impact of training of only-child recruits (1.28±0.56) was higher than that of none-only-child (1.22±0.51) (P＜0.05).The total average of attachment close was 3.73±0.51,attachment depend was 3.24±0.53,and attachment anxiety was 2.40±0.77.(2) Attachment anxiety,neuroticism and negative coping style were all positively correlated with impact of training (r =0.384,0.570,0.543,all P＜ 0.01).Attachment close and depend were both negatively correlated with impact of training (r=-0.221,-0.251,all P＜ 0.01).(3) Neuroticism and negative coping style played a completely intermediary role between adult attachment and impact of training.(4) The multiple group analysis showed that the mediation model was adapted to the only-child or none-onlychild recruits.Conclusion Adult attachment can predict impact of training to some extent in the intermediary roles of neuroticism and negative coping style.

Development of recruits training burnout self-reported questionnaires / 中华行为医学与脑科学杂志

Objective To develop recruits training burnout self-reported questionnaires, and test the reliability and validity.Methods 780 recruits(360 for first test ,420 for second test) in Xinjiang were randomly assesscd with training burnout self-reported questionnaires.Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were applied to the data, and tested the reliability and validity of recruits training burnout self-reported questionnaires.Results The questionnaires consisted of 13 items and 3 dimensions.One of the dimensions (physically and psychologically exhausted situation, training-alienation, low accomplishment) , explained 61.599％ of the total variance.Cronbach's α coefficient of the whole questionnaire was 0.837, Cronbach's α coefficient of each partial scale were between 0.775 and 0.807.Split-half reliability of the whole scale reached to 0.817, split-half reliability of each partial were between 0.758 and 0.793.The correlation coefficient among each dimensions were 0.267 to 0.569 (P＜0.01) ,and the coefficient between each dimensions and the total score were between 0.671 and 0.857(P＜0.01).Confirmatory factor analysis showed that three factor model was optimal (GFI =0.935, AGFI =0.902, NFI =0.907, CFI =0.936, IFI =0.935, RMSEA =0.050).The three dimensions and the total questionnaire had significant positive correlations with mental stress (r=-0.215--0.313, P＜ 0.01) and significant negative correlations with depression(r=0.319-0.602, P＜0.01).Conclusion The recruits training burnout self-reported questionnaires meets the requirements of psychological surveying, and could be used to text recruits training burnout.

Study on relative factors between childhood abuse and the suicidal ideation among recruits / 中华行为医学与脑科学杂志

Objective To explore the effect of childhood abuse on suicidal ideation and the influencing factors among recruits.Methods Through stratified sampling,505 recruits in Nanjing were tested by childhood Trauma Questionnaire (CTQ),Simplified Coping Style Questionnaire (SCSQ),Social Support Rating Scale (SSRS),Self-rating Idea of Suicide Scale(SIOSS) and Beck Hopelessness Scale (BHS).Results 1.The scores of suicidal ideation and hopelessness in recruits who had childhood abuse were significantly higher than those in control group ((5.56±4.58) vs (2.11±2.79),(5.93±3.01)vs (3.10±2.27),P＜0.01).2.The score of positive coping in recruits who had childhood abuse was significantly lower than that in control group(18.98±6.16 vs 23.27±7.45; P＜0.05).The score of negative coping in recruits who had childhood abuse was significantly higher than that in control group(9.27±5.04 vs 23.27±7.45; P＜0.01).3.The scores of social support in recruits who had childhood abuse were significantly lower than that in control group ((69.38± 10.43),(20.16±3.97),(25.73±3.68),(22.82±5.52) vs(75.55±9.67),(23.25±2.50),(27.56±3.51),(24.67±5.33) ; P＜0.05).4.The score of total CTQ was positively correlated with suicidal ideation,hopelessness,negative coping(r=0.379,0.402,0.228; P＜0.01),but negatively correlated with active coping style,social support(r=-0.285,-0.302; P＜0.01).Conclusion The recruits who had childhood abuse are susceptible to suicidal ideation.The negative coping style and lacking of social support may be the main factors to the suicidal ideation.

The influence of comprehensive psychological behavior training on psychological stress and health of new recruits in training periods and its interrelation / 中华行为医学与脑科学杂志

Objective To provide references for the plan-making of mental intervention on new recruits through the exploration of the comprehensive psychological behavior training influences on psychological stress and health and relevant factors.Methods 436 new recruits in training period were divided into comprehensive psychological behavior training group (intervention group) and non intervention group (control group).By randomly selected 2 (intervention group,control group) × 2 (Before training and after training) matching design,the questionnaire survey was carried out using stress-reaction questionnaire (SRQ),symptom checklist 90 (SCL-90),eysenck personality questionnaire(EPQ),trait coping style questionaire(TCSQ) at the 15th day and 75th day.t-test between group and matched t-test within group and multiple stepwise regression analysis were carried out.Results (1) The SCL-90 total point of new recruits in intervention group (125.26±36.52)and control group(124.92± 34.79) before the training and the difference of SRQ and TCSQ factor scores had no statistical significance(P＞ 0.05).The difference after the comprehensive psychological behavior training had no statistical significance (P＞ 0.05) as the total points of SCL-90 of intervention group(125.63±36.74) and other factors' score were compared with before.Except for the somatization and force,the total points of SCL-90 (131.21 ± 39.98)and other factor scores of the control group were all higher than what they were in the early period of the training significantly (P＜ 0.01 or P＜0.05).In the later period of group training,from the parallel controlled study among groups we found that except for the somatization and force,the total points of SCL-90 and other factor scores of the control group are all lower than the control group (P＜0.0 or P＜0.05).(2)The total points of intervention group's SCL-90 and SRQ had significant positive correlation with negative coping and stability(r=0.313-0.698,P＜0.01) while it had negative correlation with introversion and extroversion(r=-0.293--0.207,P＜0.01) as well as dissimulation at the later period of group training,however,it did not have significant correlation with positive coping method (P＞0.05).(3) The regression analysis showed that factors significantly affected the total score of SCL-90 respectively was:SRQ total score,negative coping method,stability,introversion-extroversion and psychoticism (P＜ 0.01).Five variables'coefficient of determination R 2 =0.665,F=247.82,P＜ 0.01.Conclusion The comprehensive psychological behavior training could reduce the over psychological stress of new recruits,promote their positive coping attitude and protecting their psychological health.Coping method and personality characteristics are important mediating variable between new recruits' psychological stress and mental health.

EEG analysis of army recruits and veterans and the relationship of the frequency spectrum with depression scale scores / 中华物理医学与康复杂志

Objective To explore the characteristics of EEG frequency in recruits and veterans and their relationship with depression scale scores.Methods Fifty-five newly enlisted soldiers formed the recruits group and 68 demobilized soldiers the veterans group.A general information survey,EEGs and the Hamilton depression scale (HAMD) were administered to all of the subjects.According to the HAMD scores,35 of the 123 were designated as the abnormal group,while 88 formed the normal one.Eighteen of the 35 with EEG abnormalities served as a doubleabnormal group to be compared with the remaining 17 cases with abnormal HAMD scores and normal EEGs (the single-abnormal group),and 9 of the 18 with higher HAMD scores as the higher group,and the other 9 cases as the lower group.The EEG frequency spectrum and the power percentages from the δ to γ frequency bands were calculated as δ:0.5-4 Hz,(o):4-8 Hz,α:8-13 Hz,β:13-25 Hz,γ:25-40 Hz.Results Forty-six of the subjects (37.4％) had abnormal EEG results,35 had abnormal HAMD scores,and 18 (51.4％ of the soldiers with abnormal HAMD scores) had both abnormalities.The veterans had lower δ band power percentage in all channels than the recruits,but in the (0) band it was the reverse.In the left channels the veterans had lower α and γ band power percentages than the recruits.Compared with the normal,all channels in the EEGs of subjects with abnormal HAMD scores had significantly higher δ band power percentages.The higher the δ band power percentage a subject had,the higher his HAMD score.Conclusion There is some correlation between changes in EEG power percentages and the possibility and severity of depression.Objective and subjective EEG evaluation can help improve the positive rate of diagnosis,and thus the management of the army.

Change of Psychological Characteristics after Joining the Army According to Internet Addiction Tendency in Young Male Army Recruits

OBJECTIVES: The aim of this study was to find out the psychological changes associated with internet addiction between before and after the military drill among the young male army recruits. METHODS: All 1091 participants were army recruits aged from 19 to 22 years who participated in the 5-week military drill. They were assessed with some self-reported questionnaires [Sociodemographic questionnaires, Young's Internet Addiction Scale (IAS), the State-Trait Anxiety Inventory (STAI), the Beck Depression Inventory (BDI), the Barratt Impulsiveness Scale (BIS), the Attention-Deficit/Hyperactivity Disorder Self-Rated Scale (ASRS)]. They were divided into two groups, One is the internet addiction tendency group and the other is non-addiction group according to the IAS score. And the severity of the internet addiction tendency, depression, anxiety and impulsiveness were evaluated by the IAS, the STAI, the BDI, the BIS, the ASRS before and after military drill. RESULTS: The result of the paired t-test shows that the IAS, the STAI, the BDI, the BIS, the ASRS scores decreased after military drill in both non-addiction group and internet addiction tendency group. The result of the repeated measures ANOVA shows that there is an interaction effect between the changes of ASRS-hyperactivity (F = 23.437, p < 0.001), ASRS-impulsiveness (F = 4.896, p = 0.027), BIS-total (F = 4.057, p = 0.044), BIS-motor impulsiveness (F = 13.609, p < 0.001) scores and groups. The result of the generalized estimating equation shows that internet addiction tendency is associated with ASRS-inattention (beta = 0.075, p < 0.001), ASRS-hyperactivity (beta = 0.092, p = 0.002), STAI-trait anxiety (beta = 0.046, p < 0.001), BIS-motor impulsiveness (beta = 0.119, p = 0.028). CONCLUSIONS: The results show that psychopathologies such as internet addiction tendency, depression, anxiety, impulsiveness may improve after military drill regardless of the groups. Internet addiction tendency may be related to the ASRS-inattention, ASRS-hyperactivity, STAI-trait anxiety, motor-impulsiveness. So these findings may be considered in the treatment of internet addiction in terms of the impulsiveness control.

The relationship between physical and biological habitat conditions and hermatypic coral recruits abundance within insular reefs (Colombian Caribbean)

Little evidence exists on the dependence between the presence and abundance of juvenile hermatypic corals and the conditions of their habitats, despite that juveniles contribute with the understanding of the community structure and its reproductive success. To assess this, the abundance of nine species of juvenile corals was correlated with eight macro-habitat (location of the reef on shelf, depth) and micro-habitat (type and inclination of the substrate, exposure to light, texture and amount of sediment accumulated on bottom, potential growth area for juveniles) conditions. Sampling was conducted in four insular coral reefs in the Colombian Caribbean: two oceanic and two continental reefs (influenced by large rivers), covering a total of 600m2 and the distribution of corals on a vertical gradient. Contingency tables and coefficients (magnitude) and multiple correspondence analyses were used to evaluate the dependency ratios for each species. The results showed that Agaricia tenuifolia displayed the most robust pattern of dependence (two high and two moderate), significant for juveniles present at a high frequency in continental reefs, devoid of potential area for juvenile growth (surrounded by macroalgae), and covering horizontal substrates exposed to light. The juveniles were associated with a habitat of moderate to high bottom accumulation of extremely fine sediment. Porites astreoides presented four moderate dependencies; ocean reefs between 2-16m depths, a high frequency of juveniles on horizontal substrates, exposed to light, non-sedimented and occupied by competitors. Siderastrea siderea displayed three moderate dependences for juveniles in cryptic zones, inclined substrate and devoid of competitors. A. lamarcki, Leptoseris cucullata and A. agaricites presented two moderate dependences; these species share high abundance of juveniles in habitats with no sediment, exposed to light and occupied by competitors (except A. agaricites). The P. porites, Favia fragum and Montastraea cavernosa species had a moderate dependence with high incidence of juveniles in ocean reefs and microhabitats exposed to light. For the nine species, results indicate that the presence (colonization), abundance and survival of juveniles, depend on certain species-specific particularities of the habitat. However, the juveniles show high tolerance and plasticity to a range of habitat variables, given their independence and low dependence observed in over 50% of the variables assessed.

Existe poca evidencia sobre la dependencia entre la abundancia de juveniles de corales hermatípicos y las condiciones del hábitat. La abundancia de corales juveniles se relacionó con condiciones del hábitat a macro (ubicación del arrecife, profundidad) y microescala (tipo e inclinación del sustrato, exposición a luz, textura y cantidad de sedimento, área de crecimiento potenial de juveniles). El muestreo se realizó en cuatro arrecifes insulares del Caribe colombiano. La dependencia se evaluó usando tablas y coeficientes de contingencia y análisis de correspondencias múltiples. Agaricia tenuifolia mostró las dependencias más robustas, siendo significativas para juveniles presentes frecuentemente en arrecifes continentales, sustrato horizontal expuesto a luz, con competidores. Los juveniles se asociaron con moderado a alto sedimento muy fino acumulado en el fondo. Porites astreoides presentó cuatro dependencias; alta frecuencia en sustrato expuesto a luz, horizontal, sin sedimento, con competidores y en arrecifes oceánicos entre 2-16m. Siderastrea siderea exhibió tres dependencias, para juveniles en lugares crípticos, sustrato inclinado y sin competidores. A. lamarcki, Leptoseris cucullata, A. agaricites, P. porites, Favia fragum y Montastraea cavernosa mostraron el menor número de dependencias, compartiendo alta frecuencia en hábitats sin sedimento, expuestos a luz, con competidores y en arrecifes oceánicos. Los resultados sugieren que la abundancia y sobrevivencia de juveniles dependen de ciertas particularidades especie-específicas del hábitat; sin embargo, los juveniles presentan tolerancia a una amplia gama de variables del hábitat.

The role of psychological capital in stress and mental maladjustment in recruits / 中华行为医学与脑科学杂志

ObjectiveTo explore the role of psychological capital in psychological stress and mental maladjustment in recruits.Methods405 recruits were sampled and investigated using the psychological stress selfevaluation test( PSET),the psychological capital questionnaires(PCQ),and military mental maladjustment scale (MMMS).ResultsPsychological stress had significant positive correlation with each factor of mental maladjustment ( r =0.164 ～ 0.438,P ＜ 0.01 ),and psychological capital had significant negative correlation with each factor of mental maladjustment ( r=-0.312 ～ -0.463,P＜ 0.001 ).The hierarchical regression analysis indicated that psychological capital,confidence,hoping,resiliency and optimism had the positive prediction of all the four factors of mental maladjustment,the variance contribution rates were 27.2％,20.1％,25.8％ and 15.9％,respectively; the main effect of psychological capital(β1 =-0.406,P＜0.01 ;β2 =-0.351,P＜0.01 ) and psychological stress(β1 =0.304,P ＜ 0.01 ;β2 =0.267,P ＜ 0.01 ) on recruits'behavioral problem and interpersonal relationship maladjustment was significant,the interaction effect of psychological capital and psychological stress on recruits' behavioral problem (β =- 0.098,P ＜ 0.05 ) and interpersonal relationship maladjustment (β =- 0.087,P ＜ 0.05 ) was significant.ConclusionPsychological capital is a moderator in interaction between mental maladjustment and psychological stress.The PCQ score may predict the variation of recruits'mental status.