Military Training Research Articles

Lead exposure of a fossorial rodent varies with the use of ammunition across the landscape

Exposure to heavy metals has been documented in a wide range of wildlife species, but infrequently in ground squirrels. This is despite their tendency to be targets of recreational shooters and the accumulation of lead ammunition in the soil environments they inhabit. We analyzed lead and copper concentrations in liver (nPb = 116, nCu = 101) and femur (nPb = 116, nCu = 116) of Piute ground squirrels (Urocitellus mollis) and in soil (n = 75) on public lands in southwestern Idaho to understand how lead exposure may vary across a gradient of intensities and histories of shooting activity. The liver and femur of squirrels from areas used for recreational shooting for >30 years had elevated lead concentrations relative to areas where shooting was rare or did not occur (our negative control), but as expected, lower than areas used for military target training for >70 years (our positive control). Lead concentration in soils were higher in areas used for military target training than in those used for recreational shooting. There were no differences in copper concentrations in biological or soil samples among sites. These data suggest that ground squirrels can be influenced by the history of lead use in their local environment, and they illustrate another pathway by which human activity can influence toxicant exposure to wildlife.

Sex differences in biomarkers of end-organ damage following exertional heat stroke in humans.

Women are participating in military and athletic activities in the heat in increasing numbers, but potential sex differences in sequelae from exertional heat illness remain poorly understood. We tested the hypothesis that women suffering from exertional heat stroke (EHS) would have similar severity of organ damage biomarkers compared with men, as measured in a hospital setting. We studied women and men presenting with EHS to the emergency department at Fort Moore, GA. We measured creatinine (CR), creatine kinase (CK), alanine-transaminase (ALT), aspartate aminotransferase (AST), and estimated glomerular filtration rate (eGFR). Core temperature was also assessed by medical personnel. Biomarker data were obtained for 62 EHS cases (11 women). Men were significantly taller, and heavier, and had larger body mass index (BMI) and body surface area (P < 0.05 for all). The highest recorded body core temperature was not different between groups [women: 41.11°C (40.06, 41.67); men: 41.11°C (40.28, 41.72), P = 0.57]. Women had significantly lower peak CR [women: 1.39 (1.2, 1.48) m·dL-1; men: 1.75 (1.53, 2.16) mg·dL-1, P < 0.01] and peak CK [women: 584 (268, 2,412) U·L-1; men: 2,183 (724, 5,856) U·L-1, P = 0.02]. Peak ALT and AST were not different between groups; during recovery time points, ALT and AST were either similar or lower in women. Women spent approximately half as much time in the hospital following admittance compared with men. Our findings suggest that women may be less susceptible to organ injury resulting from EHS. Further research is necessary to understand the pathophysiology underlying these differences and how biomarkers of end-organ damage severity can differ between women and men following EHS.NEW & NOTEWORTHY We studied otherwise healthy women and men after exertional heat stroke in a military training environment. Peak values for biomarkers of kidney and muscle damage were lower in women compared with men despite similar (highest recorded) body core temperatures. During recovery, organ damage markers were similar or lower in women. These sex differences may indicate differences in the pathophysiology of responses, but more work is needed to clarify specific mechanisms.

B - 30 Influence of Military Blast Exposure on Subjective Post-Concussion Symptom Reporting

Abstract Objective Repeated subconcussive blast exposure associated with explosive breaching, mortars, and shoulder-fired artillery weapons is commonly seen in the military/veteran population and has been found to contribute to adverse neurological outcomes; however, the extent is not fully understood. The aim of this study was to assess the effects of blast exposure during military or other training exercises on neurobehavioral symptom endorsement. Method Cross-sectional data from 48 nonclinical post-deployment Operation Enduring Freedom/Operation Iraqi Freedom veterans prospectively-recruited for a study examining posttraumatic stress and cognitive correlates at an urban VA Medical Center were examined (M age = 36.02; SD = 6.12; M years of education = 14.94; SD = 1.84). The sample was 96% male, 41% White, 39% Black, 4% Asian, and 16% Other. The Neurobehavioral Symptom Inventory (NSI) was used to assess self-reported vestibular, somatosensory, cognitive, and affective post-concussion symptoms, and the Boston Assessment of Traumatic Brain Injury-Lifetime semi-structured clinical interview assessed military-related blast exposure. Results There was a significant difference in neurobehavioral symptoms based on blast exposure, F(4,43) = 3.49, p = 0.015; Wilk’s Λ = 0.755, partial η2 = 0.25. Follow-up analyses showed that veterans with history of blast exposure endorsed significantly higher levels of somatosensory (F(1,47) = 7.69, p = 0.008, η2 = 0.143); affective (F(1,47) = 12.66, p &amp;lt; 0.001, η2 = 0.216); cognitive (F(1,47) = 5.97, p = 0.018, η2 = 0.115); and vestibular (F(1,47) = 7.21, p = 0.010, η2 = 0.136) post-concussive symptoms on the NSI compared to those without history of military blast exposure. Conclusion Veterans with blast exposure during military service reported significantly greater levels of post-concussion symptoms. This demonstrates the need to assess history of blast exposure, implement prevention measures through safeguards and decreased exposure when possible, and establish treatment modalities to improve outcomes.

Enhancing antibiotic prescribing practices at the main military training hospital of Tunis: A study of pharmaceutical interventions

Bacterial infections have historically posed significant challenges until the discovery of antibiotics, which revolutionized infectious disease treatment. However, bacterial adaptation mechanisms over time have led to increased antimicrobial resistance, necessitating judicious antibiotic use. This study aims to comprehensively analyze pharmaceutical interventions related to antibiotic prescriptions governed by antibiotic order forms to identify and rectify medication errors, optimizing antibiotic prescribing practices. Approval for this research was obtained from the institutional review board of the Main Military Training Hospital of Tunis, Tunisia. A retrospective study was conducted at the main military training hospital of Tunis over 4 months. Pharmaceutical validation of antibiotic prescriptions through antibiotic order forms was conducted by a pharmacy resident. Pharmaceutical interventions were initiated upon detection of errors, and patient records were accessed through institutional software. Out of 1100 prescription forms analyzed, 41 pharmaceutical interventions were conducted for 7 antibiotics. Twenty-four percent of all interventions were related to antibiotic order forms, with the intensive care unit accounting for the highest number of errors. Under-dosage and prescription errors were common. Our pharmaceutical interventions related to antibiotic order forms are crucial for optimizing antibiotic therapy. Feedback mechanisms to healthcare teams are essential for enhancing prescription quality and patient care outcomes. Ongoing surveillance and improvement efforts are necessary to address medication errors and enhance antimicrobial stewardship.

Leadership Styles and Effectiveness of Female Officers in the US Military: A Historical Perspective and Recent Developments

Aims: This study aims to provide a concise historical perspective and summarize recent developments in leadership styles and effectiveness of female officers in the US military. The review focuses on the evolving roles of women in military leadership, the predominant leadership styles employed, and their effectiveness in the contemporary military context. Study Design: A narrative study of peer-reviewed articles and official military reports published primarily within the last decade (2013-2023). Methodology: A comprehensive literature search was conducted using military and leadership databases, including JSTOR, Military &amp; Government Collection, and Leadership Studies. The review prioritized empirical studies, policy analyses, and authoritative reviews published in reputable journals and official military publications. Results: The study reveals a significant increase in leadership opportunities for female officers over the past decade. Transformational and adaptive leadership styles are predominant among female officers. They have demonstrated effectiveness in team cohesion, crisis management, conflict resolution, and mentorship. In some areas, such as strategic thinking and innovative problem-solving, female officers show comparable or superior performance to their male counterparts. However, challenges related to gender stereotypes and work-life balance persist. Conclusion: While substantial progress has been made in integrating women into military leadership roles, continued efforts are needed to address remaining barriers. The unique contributions of female officers to military leadership, particularly in areas of team cohesion and adaptive problem-solving, warrant further research and recognition in military doctrine and training programs.

Nursing staff in armed conflicts of the past and present

The article is devoted to the work of paramedical personnel in conditions of active hostilities, both in the historical aspect and in the military conflict of the present time. The working conditions of paramedical personnel in a combat situation and the objective difficulties in providing medical care, as well as the requirements for physical, special and military training, are reflected.

Observational study of the effects of maximal oxygen uptake on cognitive function and performance during prolonged military exercise

IntroductionMilitary operations place high demands on many cognitive functions, and stressful events characterise the military work environment. The study aimed to examine the relationship between cardiorespiratory fitness, stress response, cognitive...

Prevalence and risk factors of training-related abdominal injuries: A multicenter survey study

PurposeThis study aims to identify the prevalence and risk factors of military training-related abdominal injuries and help plan and conduct training properly. MethodsThis questionnaire survey study was conducted from October 2021 to May 2022 among military personnel from 6 military units and 8 military medical centers and participants’ medical records were consulted to identify the training-related abdominal injuries. All the military personnel who ever participated in military training were included. Those who refused to participate in this study or provided an incomplete questionnaire were excluded. The questionnaire collected demographic information, type of abdominal injury, frequency, training subjects, triggers, treatment, and training disturbance. Chi-square test and t-test were used to compare baseline information. Univariate and multivariate regression analyses were used to explore the risk factors associated with military training-related abdominal injuries. ResultsA total of 3058 participants were involved in this study, among which 1797 (58.8%) had suffered training-related abdominal injuries (the mean age was 24.3 years and the service time was 5.6 years), while 1261 (41.2%) had no training-related abdominal injuries (the mean age was 23.1 years and the service time was 4.3 years). There were 546 injured patients (30.4%) suspended the training and 84 (4.6%) needed to be referred to higher-level hospitals. The most common triggers included inadequate warm-up, fatigue, and intense training. The training subjects with the most abdominal injuries were long-distance running (589, 32.8%). Civil servants had the highest rate of abdominal trauma (17.1%). Age ≥ 25 years, military service ≥ 3 years, poor sleep status, and previous abdominal history were independent risk factors for training-related abdominal injury. ConclusionMore than half of the military personnel have suffered military training-related abdominal injuries. Inadequate warm-up, fatigue, and high training intensity are the most common inducing factors. Scientific and proper training should be conducted according to the factors causing abdominal injuries.

Hypothalamic-pituitary-ovarian axis suppression is common among women during US Army Basic Combat Training

ObjectiveLess than half of servicewomen report loss of menses during initial military training. However, self-reported menstrual status may not accurately reflect hypothalamic-pituitary-ovarian (HPO) axis suppression and may underestimate reproductive health...

Augmented Reality for Interactive, Innovative and Fun Science Learning: Systematic Literature Review

The development of the learning process by utilizing current technological developments needs to adapt to the character of 21st-century learning. The fact that 21st-century learning is still not implemented optimally and well enough in schools has encouraged several studies that integrate Augmented Reality technology into science learning. AR Learning Media can visualize science learning concepts for understanding and structure of an object model, making AR a more effective, innovative, and fun media. Where the research objective is to examine Augmented Reality for Interactive, Innovative, and Fun Science Learning: Systematic Literature Review. The review was conducted based on state-of-the-art methods using the preferred reporting items for reviews and meta-analyses (PRISMA) guidelines. The results of this research explain that there are 3 types of Augmented Reality Methods, namely image recognition, Markerless Augmented Reality, Projection Augmented Reality, and Superimposition Augmented Reality; There are 4 things to use Augmented Reality, namely the use of augmented reality (AR) as a learning medium, the use of augmented reality (AR) to train skills, Abstract Thinking Skills, Creative Thinking Skills, Interactive, Innovative and fun. Some fields use AR, namely: entertainment, military training, robotics and telerobotics, consumer design, and medicine.

Inflammatory and Oxidant Responses to Arduous Military Training: Associations with Stress, Sleep, and Performance.

Arduous military training frequently consists of prolonged physical activity, sleep disturbance, and stress that increases musculoskeletal injury risk and performance decrements. Inflammatory and oxidative stress responses have been reported in response to arduous training, but with inconsistencies across markers and with under-representation of women. The purpose of the current report was to measure circulating inflammation and oxidative stress responses to military training and to correlate biomarkers with subjective measures of stress and sleep quality as well as military fitness test performance. Candidates undergoing the 10-week Marine Corps Officer Candidate School (OCS; 101 men; 62 women) were monitored, with demographic and questionnaire data collected, and blood drawn before and after OCS. Blood was analyzed for six markers of inflammation and three markers of oxidative stress. Associations between biomarkers and questionnaire and fitness test performance were tested. All measured inflammatory markers as well as plasma antioxidant capacity were elevated following OCS. The inflammatory increase was higher in women for several markers. Sleep disturbance and stress perception were associated with IL-6, IL-10 and CRP concentrations, suggesting that low sleep disturbance and stress perception were associated with low inflammatory load. Additionally, those with the highest inflammation at each time point performed worse on fitness tests than those with low inflammation. Following arduous military training, the circulating environment in a significant portion of officer candidates resembled chronic low-grade inflammation. This circulating inflammatory environment appeared worse with poor sleep, high stress perception, and poor fitness test performance, with utility observed for CRP, IL-6, and IL-10 as biomarkers of these responses. Since inflammation may contribute to musculoskeletal injury and performance decrements, minimizing chronic inflammation during military training should be explored.

Stress Response to Winter Warfare Training: Potential Impact of Location.

Winter warfare training (WWT) is a critical component of military training that trains warfighters to operate effectively in extreme environments impacted by snow and mountainous terrain. These environmental factors can exacerbate the disruption to the hormone milieu associated with operating in multi-stressor settings. To date, there is limited research on the physiological responses and adaptations that occur in elite military populations training in arduous environments. The purpose of this study was to quantify hormone responses and adaptations in operators throughout WWT. Participants engaged in baseline laboratory metrics at their home station, Fort Carson, located in Colorado (CO) prior to WWT, for one week in Montana (MT) and one week in Alaska (AK). WWT periods were separated by approximately one month. Blood was collected upon wake at baseline (CO) and on the first and last day of WWT at each location (MT and AK). Plasma was analyzed for stress, metabolic, and growth-related hormones via enzyme-linked immunoassay (ELISA). Sleep quality was assessed via the Pittsburg Sleep Quality Index (PSQI) at baseline (CO) and on the first day of training in MT and AK. Cognitive function was evaluated using the Defense Automated Neurobehavioral Assessment (DANA) at baseline (CO) and on the first and last day of WWT in both MT and AK. Fourteen US Army operators in 10th Special Forces Group (SFG) Operational Detachment participated in winter warfare training (WWT; age: 31.5 years; 95%CI[28.1, 34.3]; height: 180.6 cm; 95%CI[177.3, 183.4]; weight: 87.4 kg.; 95%CI[80.6, 97.7]; body fat: 18.9%; 95%CI[13.7, 23.1]; male: n=13; female: n=1). Plasma adrenocorticotropic hormone (ACTH) levels increased from baseline (19.9 pg/mL; 95%CI[8.6, 24.2]) to pre-WWT (26.9 pg/mL; 95%CI [16.2, 37]; p=0.004), decreased from pre- (26.9 pg/mL; 95%CI [16.2, 37]) to post-WWT in MT (22.3 pg/mL; 95% CI [8, 23.7]; p=0.004;), and increased from pre- (25 pg/mL; 95%CI[ 28.4) to post-WWT (36.6 pg/mL; 95%CI [17.9, 48.9]) in AK (p=0.005). Plasma cortisol levels decreased from pre- (174 ng/mL; 95%CI[106.2, 233.6]) to post-WWT (94.5 ng/mL; 95%CI[54.8, 101.7]) in MT (p=0.001) and, conversely, increased from pre- (123.1 ng/mL; 95%CI[97.5, 143.9]) to post-WWT (162.8 ng/mL; 95%CI[128, 216.7]) in AK (p<0.001). Alterations in growth-related hormones (insulin-like growth factor 1 [IGF-1], insulin-like growth factor binding protein 3 [IGFBP-3], and sex hormone binding globulin [SHBG]) were observed throughout WWT (p<0.05). The Total Testosterone / Cortisol ratio (TT / CORT; molar ratio) was lower pre-WWT in MT (0.04; 95%CI[0.01,0.04) compared to baseline in CO (0.07; 95%CI[0.04, 0.07]; p=0.042). Triiodothyronine (T3) levels increased from pre- (101.7 ng/dL; 95%CI[93.7, 110.4]) to post-WWT (117.8 ng/dL; 95%CI[105.1, 129.4]) in MT (p=0.042). No differences in sleep quality were reported between locations (CO, MT, and AK). Alterations in cognitive function were exhibited between locations and during WWT in both MT and AK (p<0.05). Over the course of WWT, elite operators experienced alterations in stress, metabolic, and growth-related hormones, as well as cognitive performance. The increase in stress hormones (i.e., ACTH and cortisol) and reduction in cognitive performance following training in AK are suggestive of heightened physiological strain, despite similarities in physical workload, self-reported sleep quality, and access to nutrition. The variation in hormone levels documented between MT and AK may stem from differences in environmental factors, such as lower temperatures and harsh terrain. Further research is warranted to provide more information on the combined effects of military training in extreme environments on operator health and performance.

The Effects of Platoon Leader Mental Health and Resilience Training on Soldier Problematic Anger.

The DoD has prioritized programs to optimize readiness by enhancing resilience of its service members. Problematic anger in the military is an issue that impacts psychological well-being and resilience. Leader support is a potential tactic for reducing anger and its effects. Currently military resilience training is focused on individual level resilience. A gap exists in such training and there is a need to train leaders to provide mental health and resilience support to their subordinates. The present study developed and tested a theory-based training aimed at platoon leaders that focused on how to engage in proactive and responsive mental health and resilience-supportive behaviors through guided discussion, scenarios, and computer-based training with embedded quizzes. We conducted an Institutional Review Board-approved cluster randomized controlled trial to test the effects of a leadership training with Army platoon leaders (n = 99) and soldiers (n = 276) in 2 brigades at an active duty military installation in the USA. Training was conducted in person with a computer-based component. Soldiers completed online surveys 1 month prior and again 3 months after the leader training. Post-training results demonstrated significant leader learning effects (Cohen's d = 1.56) and leader positive reactions to the training information, with leaders reporting the information as useful and relevant to their work. Service members in the treatment group reported significantly lower levels of anger at time 2 (b = -0.18, SE = 0.06, P = .002, pseudo ΔR2 = 0.01; d = 0.27) compared to the control group. We also found an indirect effect of the intervention on increased life satisfaction at time 2 via decreased anger (b = 0.035, SE = 0.023, 95% CI = [0.004-0.24]). This study provides an initial evaluation of training for platoon leaders that educates them on proactive and responsive behavioral strategies to support the mental health and resilience of their service members via decreased problematic anger and increased well-being. Further adaptations and evaluations should be conducted with other military branches and civilian occupations, as the benefits of the relatively brief and noninvasive training could be widespread.

Actual issues of improvement of types of official training of police officers

In the article, the authors provided a description of the types of service training, namely functional training, general training, tactical training, fire training, physical training. It was concluded that in order to improve the professional training of police officers, it is urgent to implement the measures of structural revision of its varieties, as well as qualitative updating of its content, taking into account the modern challenges that exist in police activity, the development of the National Police at the current stage of state formation. Taking into account the content of training on functional training, it has been proven that it would be more correct to talk about “functional and legal training”, which is proposed to be defined as a set of measures aimed at the acquisition and improvement of police knowledge, abilities and skills in the field of regulatory and legal support of official activities, features of police activity, taking into account the specifics of the functional duties of police officers, necessary for the successful performance of their official duties. It was emphasized the need to improve the name of the “life safety” component of general training, replacing it with the name “policeman’s personal safety and life safety”. The expediency of mastering tactical medicine by police officers was determined, which was proposed to be added to the component of pre-medical training. The need to include issues of improving the tactics of driving a company car in tactical training has been proven; effective use of the main varieties of special equipment, technical devices, technical means and specialized software, in particular, the tactics of using UAVs; tactics of police actions under the influence of sources of ionizing radiation. The position of scientists regarding the need to form a new model of physical training within the framework of service training of police officers with the implementation of NATO standards is supported, for which the following measures are proposed: studying the positive experience of the Armed Forces of Ukraine in terms of developing methodological recommendations for individual physical training of servicemen according to NATO standards; review of standards for physical training; creation of a typical program of physical training within the framework of official training of police officers. The need to introduce a new type of training in the system of police officer training – “general military training” – has been proven.

Multivitamin Compliance Reduces Injuries of Female Recruits at Air Force Basic Training: A Randomized Controlled Cohort Study.

Department of the Air Force basic military training (BMT) is the 7.5-week initial entry training for all enlisting U.S. Air Force and Space Force recruits. Overuse musculoskeletal injuries (MSKI) during training threaten success in BMT, and trainees with nutritional deficiencies are at higher risk. Several efforts are made at BMT to mitigate these issues to help trainees graduate on time, such as the distribution of multivitamins (MVI) to female recruits. However, trainee compliance with the prescribed MVI has been reported to be low, calling into question the effectiveness of this intervention. This study evaluated the effect of briefing modality offered to these trainees at the time of distribution on educational effectiveness, MVI compliance, and injury rates. This was a randomized controlled cohort study of BMT female trainees. Subjects included all female trainees of a single iteration of BMT concurrently completing training within the same squadron. At the outset of training, cohorts were randomly educated in one of two ways regarding the provided MVI. The control cohort (n = 80) was presented with the standard educational video created by BMT-registered dietitians, while the test cohort (n = 79) was presented the video and then also briefed in-person by a group of subject matter experts. At the end of BMT, the trainees completed a questionnaire regarding their knowledge, confidence, and compliance with the MVI. Additionally, a routinely collected training database was queried and analyzed for differences in injuries and training outcomes using the chi-squared test with significance set to α ≤ 0.05. Although both cohorts found their educational presentation useful, the "in-person" cohort reported significantly higher compliance rates and were found to be diagnosed with MSKI and bone stress injuries at significantly lower rates (43% and 66% relative risk reductions, respectively). Education to female BMT trainees regarding the MVI, which included a face-to-face discussion with subject matter experts, resulted in greater compliance and reduced incidence of MSKI and bone stress injury, compared to a video prepared by registered dietitians alone. Such educational approaches should continue to be strived for in this and other military population health measures. This study's implication of MVI efficacy for injury risk reduction in female trainees should be further studied, verified, and improved upon in this and other populations.

A Serious Game for Enhancing Rescue Reasoning Skills in Tactical Combat Casualty Care: Development and Deployment Study.

Serious games (SGs) have emerged as engaging and instructional digital simulation tools that are increasingly being used for military medical training. SGs are often compared with traditional media in terms of learning outcomes, but it remains unclear which of the 2 options is more efficient and better accepted in the process of knowledge acquisition. This study aimed to create and test a scenario-based system suitable for enhancing rescue reasoning skills in tactical combat casualty care. To evaluate the effectiveness of the SGs, a randomized, observational, comparative trial was conducted. A total of 148 members from mobile medical logistics teams were recruited for training. Pre- and posttraining assessments were conducted using 2 different formats: a video-based online course (n=78) and a game simulation (n=70). We designed 3 evaluation instruments based on the first 2 levels of the Kirkpatrick model (reaction and learning) to measure trainees' satisfaction, knowledge proficiency, and self-confidence. There were 4 elements that made up the learning path for the SGs: microcourses (video-based online courses), self-test, game simulation, and record query. The knowledge test scores in both groups were significantly higher after the intervention (t154=-6.010 and t138=-7.867, respectively; P<.001). For 5 simulation cases, the average operation time was 13.6 (SD 3.3) minutes, and the average case score was 279.0 (SD 57.6) points (from a possible total of 500 points), with a score rate of only 44% (222/500 points) to 67% (336/500 points). The results indicated no significant difference in trainees' satisfaction between the 2 training methods (P=.04). However, the game simulation method outperformed the video-based online course in terms of learning proficiency (t146=-2.324, P=.02) and self-perception (t146=-5.492, P<.001). Despite the high satisfaction reported by trainees for both training methods, the game simulation approach demonstrated superior efficiency and acceptance in terms of knowledge acquisition, self-perception, and overall performance. The developed SG holds significant potential as an essential assessment tool for evaluating frontline rescue skills and rescue reasoning in mobile medical logistics teams.

The Influence of Operator Trust on Human-Robot Interaction Within Teams

Utilizing advanced machinery in team environments often necessitates reliance on a leader, or “operator,” who is in charge of interfacing with technology directly on the team’s behalf. This is particularly evident in modern military missions, where teams depend on operators of robotic machinery to safely navigate dangerous tasks or hazardous terrain. The present work is part of a larger study on integrating a semi-autonomous quadruped robot into military training exercises. This analysis focused on how trust in an operator controlling Spot influenced different aspects of human-robot interaction (HRI) among the team. Operator trust was found to be positively correlated with positive perceptions of the robot, trust in and reliance on the robot, and willingness to use the robot for future exercises. Improving operator trust, thereby shifting the focus to human-human interaction, may prove an effective avenue for bolstering confidence in robotic systems.

Stress-induced increase in heart-rate during sleep as an indicator of PTSD risk among combat soldiers.

Discerning the differential contribution of sleep behavior and sleep physiology to the subsequent development of posttraumatic-stress-disorder (PTSD) symptoms following military operational service among combat soldiers. Longitudinal design with three measurement time points: during basic training week (T1), during intensive stressed training week (T2), and following military operational service (T3). Participating soldiers were all from the same unit, ensuring equivalent training schedules and stress exposures. During measurement weeks soldiers completed the Depression Anxiety and Stress Scale (DASS) and the PTSD Checklist for DSM-5 (PCL-5). Sleep physiology (sleep heart-rate) and sleep behavior (duration, efficiency) were monitored continuously in natural settings during T1 and T2 weeks using wearable sensors. Repeated measures ANOVA revealed a progressive increase in PCL-5 scores from T1 and T2 to T3, suggesting an escalation in PTSD symptom severity following operational service. Hierarchical linear regression analysis uncovered a significant relation between the change in DASS stress scores from T1 to T2 and subsequent PCL-5 scores at T3. Incorporating participants' sleep heart-rate markedly enhanced the predictive accuracy of the model, with increased sleep heart-rate from T1 to T2 emerging as a significant predictor of elevated PTSD symptoms at T3, above and beyond the contribution of DASS stress scores. Sleep behavior did not add to the accuracy of the model. Findings underscore the critical role of sleep physiology, specifically elevated sleep heart-rate following stressful military training, in indicating subsequent PTSD risk following operational service among combat soldiers. These findings may contribute to PTSD prediction and prevention efforts.

Application of Strategic Management Through Military Leadership

The Indonesian National Armed Forces (TNI) unit has specific duties as mandated by Law No. 34 of 2004. Soldiers are expected to adhere to values derived from the nation's military doctrine, encapsulated in the Sapta Marga, the Soldier's Oath, and the 8 Obligations of the Indonesian National Armed Forces. Essential qualities for soldiers include loyalty to superiors, decisiveness, discipline, and responsibility towards their duties. The Indonesian National Armed Forces organizational structure is permanent and non-profit, which limits social interactions among soldiers, particularly those from different units or ranks. There are no specific guidelines for leadership styles at different rank levels, leading leaders to rely on the organizational culture established during military training. According to Wawan (2020), leadership in the military, underpinned by organizational culture values, motivates soldiers to improve their performance. Leaders play a critical role in applying organizational culture by making decisions based on Indonesian National Armed Forces doctrines. The responsibilities of officers within the Indonesian Army (TNI AD) evolve with their rank. Career development is determined by rank following the completion of general development education (Dikbangum), which involves rigorous selection processes evaluating various aspects supporting the required skills and competencies for higher ranks. Proportional stratified random sampling was used among officer students in Dikbangum for Secapa, Selapa, Sesko Indonesian National Armed Forces, and Seskoad. The study included 640 respondents: 111 from Secapa, 278 from Selapa, 190 from Seskoad, and 61 from Sesko Indonesian National Armed Forces. Research findings indicate that leadership positively affects soldier performance through organizational culture and work motivation within the Indonesian National Army. However, data from the overall sample revealed a negative impact of work motivation on soldier performance, both directly and through leadership roles incorporating work motivation elements. This negative effect is attributed to age, rank, job responsibility, and unit type differences among the research subjects in each cluster group. The study on officer students undergoing general development education in 2023 within the Indonesian National Army shows that leadership directly influences soldier performance, positively affects work motivation, and impacts organizational culture. Leadership also affects performance through work motivation and organizational culture. Leadership approaches at different rank levels have positively influenced soldiers' responses, enabling them to perform their duties effectively in accordance with directives from higher units, such as MABES Indonesian National Armed Forces.

Affirming the arctic outdoors: reading norrland ranger memoirs of becoming through outdoor training

ABSTRACT This article contributes to literature in IR and critical military studies on embodied experiences, military geographies, and research on rangers. Despite being a common feature of military training, little research exists on how the military uses outdoor training to shape soldiers’ identities, emotions, and embodied dispositions. In contrast to existing scholarship’s emphasis on using and constructing outdoor environments in military training to transmit values and skills to make soldiers tough, I argue that outdoor training should be examined from its wealth of embodied experiences and the becoming it gives rise to. Exploring written memoirs by Swedish Norrland Rangers in annual ranger journals on their embodied experiences of extensive outdoor training in north Sweden, the article traces how these rangers represent outdoor training as an assemblage of challenging and pleasurable experiences of being entangled with the northern geographies. The findings indicate that Norrland rangers actively nurture an affirmative orientation to the outdoors and Arctic geographies through their representations of outdoor training, making the challenging ranger formation a rewarding becoming. By developing how rangers constitute and foster this affirmative orientation through their writings, the article provides a better understanding of how pleasurable feelings and experiences of the outdoors are nurtured and drawn upon to socialize rangers.