Military medicine
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The U. S. Army employs over 470,000 active duty soldiers throughout the world. ⋯ Key improvements included the installation of $900,000 worth of new gym equipment in existing physical fitness facilities, increasing the basic daily food allowance by 44% to facilitate the purchase of healthy options, and the installation of blackout blinds in all barracks to ensure more restful sleep during times of peak sunlight. The ADM is well understood by senior Army leaders. Use of the ADM in future military-specific public health studies could ensure a more effective uptake and implementation of public health recommendations.
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Tunnel operations produce unique psychophysiological activation that is correlated with cognitive impairment and lower performance. This study introduces a new concept: subterranean operational potential (SOP) and assesses its psychophysiological correlates for performance prediction in underground spaces. 138 soldiers of elite infantry battalions, with/without previous experience, who participated in a simulation of tunnel warfare. Physical, psychological, cognitive style, and performance measures were collected. ⋯ The cognitive style was positively correlated with performance. Saliva cortisol levels were significantly higher before the simulation. Inexperienced and experienced differed in the change in before-after saliva cortisol levels.
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Cancers of unknown primary (CUP) are defined as histologically confirmed metastatic cancers that do not have an identified primary site of origin despite an appropriate diagnostic workup. Although accessibility to and quality of medical care influence diagnosis of cancer including CUP, previous studies describing CUP have generally been conducted in patients with various accessibilities to care. This study aimed to describe the demographic, histologic, and temporal trend characteristics of CUP patients in the DoD Cancer Registry of the Military Health System (MHS), which provides universal health care access, reducing the potential effects of accessibility to care on research results. ⋯ The proportion and trends of CUP in the ACTUR were generally consistent with other descriptive CUP studies. This study provides a description of CUP in a health care system with universal access in the USA and provides a foundation for future studies on CUP.
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As part of their day-to-day operational mission, shipboard sailors experience unique stressors that can affect their health and readiness. The San Diego Fleet and Family Support Center (FFSC) conducts in-person classes to teach stress management principles to sailors. The FFSC stress management course covers the causes and consequences of stress, reviews the Navy Operational Stress Control model, and provides information on basic stress management skills. This course has not been rigorously evaluated to determine its impact on the sailors' ability to manage stress. The purpose of this study was to evaluate the short-term impact of the FFSC stress management class on the (1) sailors' stress management knowledge, (2) sailors' intention to share knowledge from the class with others, and (3) sailors' satisfaction with the class. ⋯ This study was the first evaluation of the short-term impact of the FFSC stress management course on the stress management knowledge of shipboard crews. Study limitations prevented the study team from assessing the long-term impact of the stress management course on future stress levels and stress abatement behaviors. Recommendations are made to enhance future evaluations of FFSC classes for service members.
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The newly implemented Army Combat Fitness Test (ACFT) of the U.S. Army seeks to revolutionize the Army's fitness culture and reduce the rate of preventable injuries among soldiers. The initial rollout of the ACFT has been met with several challenges, including a gender-neutral scoring system. The ACFT has undergone several revisions to adapt to the present state of U.S. Army physical fitness; however, the test faces several more obstacles as more data become available. The ACFT was designed to measure combat readiness, a useful tool for units facing deployment or a change in duty station to a high-altitude environment. Reduced oxygen availability (hypoxia) at high altitude influences many physiological functions associated with physical fitness, such that there is an increased demand for oxygen in exercising muscle. Therefore, the purpose was to investigate the effects of normoxic and two levels of hypoxia exposure (moderate and severe; fraction of inspired oxygen [FiO2]: 16.0% and 14.3%) during the 3-repetition deadlift (MDL), hand-release push-up (HRP), and leg tuck (LTK) events of the ACFT. ⋯ Performance and scores of the modified ACFT were not influenced by acute normobaric MH and SH exposure compared to normoxia. Further investigations should examine the full testing battery of the ACFT to provide a comprehensive analysis and potential evidence for such differences.