Military medicine
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Cardiorespiratory fitness (CRF) is a crucial performance requirement of specialized military occupations. Age and physical activity are established predictors of CRF, but it is not clear how these predictors combine with each other and/or with genetic predisposition. The goal of this study was to derive inclusive explanatory models of CRF in US Navy Explosive Ordnance Disposal (EOD) operators, synthesizing conventional (e.g., age, body composition, and physical activity) and novel influences (e.g., genetic variance). ⋯ This study signifies a shift toward inclusive explanatory models of CRF and aerobic performance, accounting for combined roles of genetic, physiologic, and behavioral influences. Although we were able to quantify combined effects, we were unable to evaluate interaction effects (e.g., gene-gene, gene-behavior) due to limited statistical power. Other limitations are that this specialized military population may not readily generalize to broader populations, and the current sample was all male. Considering these limitations, we aim to replicate this study in various populations, both male and female. Despite its limitations, this study reflects a shift toward more comprehensive predictive models of CRF, explaining the unique and shared contributions of genetic predisposition, physiology, and behavior. These findings have implications for assessment, selection, and training of specialized military members, and may also impact mission success and survivability. Future studies are needed to better characterize additive, interactive, and mediated effects.
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Obesity and overweight, defined as body mass index (BMI) of 30.0 and above or 25.0-29.9, respectively, are of significant concern to the military population, due to their associated comorbidities and potential for impaired readiness. In 2016, the US Army reported a prevalence of 17.3% obesity and 52.9% overweight among soldiers, despite both physical demands of the job and Department of Defense (DoD) guidelines which recommend separation from service for those unable to meet body composition standards. This study examines the health service utilization of active duty, male Army soldiers in order to determine the prevalence of obesity and overweight and to estimate the effects of these conditions on readiness. ⋯ More than 70% of soldiers had overweight or obesity in FY 2015, showing the highest prevalence yet measured for these conditions. Previous reports of lower prevalence may be due to the inclusion of circumference-based body fat assessments, which have been criticized for inaccuracy. In our study, disproportionately high health service use by soldiers with obesity suggests decreased readiness, as these soldiers may experience both poorer health and lose necessary training time due to increased provider visits. Proportional usage by soldiers with overweight suggests the protective effect of regular physical activity, though these soldiers should be monitored to ensure that they do not progress to obesity. Additional research should establish the burden of cost, absenteeism, and presenteeism of obesity on the MHS, as well as developing more appropriate field tests for body fat assessment and BMI standards to better support military readiness.
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Gender disparity in academic medicine has been well described in the civilian sector. This has not yet been evaluated in the military health system where hundreds of female surgeons are practicing. Military service limits factors such as part time work and control over time spent away from family, which are often cited as contributors to the pay and promotion gap in civilian academic medicine. The military has explicit policies to limit discrimination based on gender. Pay between men and women is equal as it is based on rank and time in rank. One would expect to see less disparity in promotion through the academic ranks for military female surgeons given this otherwise equal treatment. This has not previously been objectively tracked or reported. It is beneficial to characterize the military academic medicine gender gap and benchmark against national data to define the academic gender gap and lay the groundwork for future work to identify factors contributing to the observed difference. ⋯ Fewer female surgeons in military medicine hold academic appointment when compared with their counterparts in civilian medicine. Similar to the civilian sector, military academic surgery also demonstrates less likelihood of female representation in higher academic stations. This discrepancy in representation follows a linear trend over the different ranks. This discrepancy has not been previously documented. The military offers a unique opportunity to study the issue of gender imbalance in academic promotion practices given its otherwise equal treatment of males and females. Additional studies will be necessary to understand uniformed female surgeons' barriers to academic advancement.
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Excessive alcohol consumption continues to be a significant concern to overall military readiness; each year, it results in non-deployable active duty service members and service members separated from service. In 2009, The Community Preventive Services Task Force recommended limiting the hours of alcohol sales as an evidence-based and effective intervention to reduce alcohol-related harms. In June 2014, partnerships at an Army Installation in the Midwestern United States implemented a policy to reduce excessive alcohol consumption and associated alcohol-related harms. Although community-based interventions have been shown to successfully reduce alcohol-related negative consequences, little research has explored the effects of these interventions in military communities. ⋯ This was the first known evaluation within a military community to report improvements in crime statistics following an eight hour reduction in daily retail sale hours of alcohol. The reduction in alcohol-related harms presented in this evaluation are typical for small communities implementing alcohol-related policies; however, the effect sizes reported here are larger than those reported in the current literature, suggesting that the policy positively impacted the installation community in decreasing alcohol-related harms. Evaluation data did not show statistically significant reductions in DUI/DWI citations and SIRs occurring during night hours. Further, the evaluation design disallows the ability to draw a causal relationship between the intervention and measured outcomes. Additional installations should consider implementing similar policies to determine if observed effects are replicable. Future studies should include a longitudinal design that would allow for long-lasting changes to be observed within the population, measurement of additional proximal outcomes (e.g., reported alcohol consumption), and investigating social and health outcomes both inside and outside the confines of the installation community.
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Strength training has been routinely used in exercise programs of military groups; however, no review has been ever conducted to clarify the selection of exercise tests to monitor its effectiveness. Therefore, the aim of the present review was to critically evaluate the current practices in the choice of assessment methods for muscle strength in military and suggest directions for future research. ⋯ Although strength training has been included in military training, it was concluded that the existed physical fitness test batteries focused mostly on muscle endurance rather than on muscle strength. Therefore, it would be suggested that muscle strength tests be included in future physical fitness test batteries in order to evaluate effectively the content of military training.