Change in measures of moral function following acute bouts of Marine Corps Martial Arts Training.

Abstract

The Marine Corps Martial Arts Program (MCMAP) was developed to prepare Marines for complex battlefield situations that include hand-to-hand combat and ethical decision making. The objective of this study was to quantify changes in ethical decision-making following MCMAP training. Fifty-five, active duty, newly enlisted U.S. Marines (Males: n=37; age=19±1years; height=176±7cm; mass=74±7 kg; Females: n=18; age=20±2years; height=164±6cm; mass=61±6 kg) volunteered for this investigation and were assessed three times over 6weeks, with 3weeks between each visit, using serial blood samples for cortisol, norepinephrine, and epinephrine collected before training and during recovery [Immediate Post (IP), 15, 30, 45 and 60min]. The Moral Functioning Continuum was used to quantify moral function before training, IP, 30, and 60min post. Moral intention exhibited an acute response to training with significantly impaired decision making immediately post training. Moreover, both moral intention and moral judgement worsened over the visits suggesting a chronic impairment related to time in training suggesting a functional change in ethical decision-making following acute bouts of MCMAP.