Air Assault Soldiers Demonstrate More Dangerous Landing Biomechanics When Visual Input Is Removed

Air assault soldiers demonstrate more dangerous landing biomechanics when visual input is removed.

Soldiers are subjected to increased risk of musculoskeletal injuries in night operations because of limited visual input. The purpose of this study was to determine the effect of vision removal on lower extremity kinematics and vertical ground reaction forces during two-legged drop landings. The researchers tested 139 Air Assault Soldiers performing a landing task with and without vision. Remov...

Minimal additional weight of combat equipment alters air assault soldiers' landing biomechanics.

The additional weight of combat and protective equipment carried by soldiers on the battlefield and insufficient adaptations to this weight may increase the risk of musculoskeletal injury. The objective of this study was to determine the effects of the additional weight of equipment on knee kinematics and vertical ground reaction forces (VGRF) during two-legged drop landings. We tested kinemati...

Expressing Anger Is More Dangerous than Feeling Angry when Driving

Anger is an emotion that drivers often feel and express while driving, and it is believed by researchers to be an important cause of dangerous driving behavior. In this study, the relationships between driving trait anger, driving anger expression, and dangerous driving behaviors were analyzed. The Driving Anger Scale (DAS) was used to measure driving trait anger, whereas the Driving Anger Expr...

When Less is Less and When Less is More: Starting Small with Staged Input

It has been suggested that external and/or internal limitations may paradoxically lead to superior learning (i.e., the concepts of “starting small” and “less is more”; Elman, 1993; Newport, 1990). In this paper, we explore what conditions might lead to a starting small effect. We report on four artificial grammar learning experiments with human participants. In Experiment 1A, we found an effect...

Blood lead level in opium abuse. Which is more dangerous? Opium smoking or opium ingestion?