Publications by authors named "Samson V Ortega"

Article Synopsis
  • Mental fatigue negatively impacts soldiers' marksmanship performance, particularly in decision-making accuracy during live-fire scenarios.
  • Twenty trained infantry soldiers participated in a study comparing their shooting accuracy after completing either a mentally fatiguing task or a control task, using heart rate variability and subjective workload assessments to measure effects.
  • Results showed that while overall projectile accuracy and precision didn't differ significantly, the mental fatigue led to a notable increase in decision errors when soldiers had to determine whether to shoot or withhold shots.
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Objective: The goal of this study was to quantify shooter performance relative to subtle variations in recoil energy.

Background: Marksmanship performance remains undefined for subtle distinctions in weapon recoil energy across common small-arms platforms.

Method: Weapons were customized using multiple components and ammunition types.

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Objective: The purpose was to determine if Soldier rucksack load, marching distance, and average heart rate (HR) during shooting affect the probability of hitting the target.

Background: Infantry Soldiers routinely carry heavy rucksack loads and are expected to engage enemy targets should a threat arise.

Method: Twelve male Soldiers performed two 11.

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