"Effects of Lighting Conditions on Psychophysiological Re-sponses and Motor Skills in Warfighters During Close Quarter Combat Simulations"

Abstract

"This study examines the impact of lighting conditions (darkness, rotational light and continuous light) on warfighters’ psychophysiological responses and fine motor skills in close-quarter combat (CQC) simulations. The study assessed the rate of perceived exertion, blood lactate concentration, cortical arousal, isometric lumbar and leg strength, and the time required to reload a pistol magazine in 50 male military personnel experienced in international missions. Findings revealed distinct psychophysiological responses correlated with lighting conditions, with significant responses under rotational and no-light scenarios. Notable correlations included the critical flicker fusion threshold with magazine reload time (r =-0.547, p < 0.000) and isometric strength post-CQC with the rate of perceived exertion (r = 0.319, p < 0.009). The study suggests that manipulating lighting conditions can enhance training and performance in high-stress environments, applicable to warfighters, police officers and firefighters. © 2025, Australian Military Medicine Association. All rights reserved."