Publications by authors named "J K McClung"

The mentally and physically challenging 19-20 day, multi-stressor US Army Special Forces Assessment and Selection (SFAS) course selects soldiers for Army Special Forces (SF) training. If selected, candidates enroll for advanced training in the 2-year Special Forces Qualification Course (SFQC) to qualify for the SF. This longitudinal study examined physiological, psychological, and nutritional status of soldiers before (pre-SFAS) and after SFAS (post-SFAS), and post-SFQC, to identify predictors of graduation from SFQC.

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Background: Dietary intake is a modifiable factor linked to short-term and long-term health. The Healthy Eating Index (HEI) is an objective measure to assess diet quality and population-level comparisons, like military to civilian.

Objectives: This study aimed to characterize diet quality of early-career and mid-career female soldiers compared with that of age-matches and sex-matched civilians and to link indicators of cardiometabolic disease risk to dietary outcomes and health status.

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Article Synopsis
  • Humans can cooperate with unrelated individuals much more than other species, but there’s a huge variation in how individuals decide to cooperate.
  • Factors like group membership, discussions about shared goals, and oxytocin levels influence these cooperation decisions in both adults and children.
  • A study showed that children aged 10-14 exhibited similar cooperation patterns as adults, particularly related to shared intentionality talk, but differences existed in the underlying mechanisms, including the role of oxytocin.
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Advances in medical technology have begun to blur the lines between life and death as well as the lines between appropriate and inappropriate therapy. This review addresses the charged issue of the management of cardiac devices at or near the end of a patient's life, provides a summary of prior and current opinion with some historical context, and attempts to provide some modest guidance as to how to approach the various options to the patient's best advantage. Modalities to be addressed include indwelling electronic devices, the left ventricular assistance device, and extracorporeal mechanical oxygenation, and includes available outcome data as well as ethical analysis from a number of commentators.

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Strenuous physical training increases total blood volume (BV) through expansion of plasma volume (PV) and red cell volume (RCV). In contrast, exogenous erythropoietin (EPO) treatment increases RCV but decreases PV, rendering BV stable or slightly decreased. This study aimed to determine the combined effects of strenuous training and EPO treatment on BV and markers of systemic and muscle iron homeostasis.

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