Effects of Heart Rate Biofeedback, Sleep, and Alertness on Marksmanship Accuracy during a Live-fire Stress Shoot.

On the job, law enforcement may be required to utilize lethal force to maintain personal or public safety. Officers' attention to detail, decision-making, and marksmanship accuracy (MA) may be impaired by reduced sleep, increased heart rate (HR), and breathing rate (BR). HR biofeedback (emWave, EW) may help mitigate these impairments.

Ranger Athlete Warrior Assessment Performance in a Reserve Officer Training Corps Training Environment.

Muscular strength, power, and aerobic capacity are vital to Army Reserve Officer Training Corps (AROTC) Cadets as well as active-duty Soldiers, especially when lifting heavy objects, traveling long distances, or moving with maximum speed and agility. The purpose of this study was to examine the change (after a pre/post intervention) of 5 weeks of resistance strength training and aerobic capacity training on a Ranger Athlete Warrior (RAW) assessment. Twelve (males, n = 10; females, n = 2) college-aged AROTC Cadets volunteered for this study during their train-up for the annual Ranger Challenge Competition.

High-intensity tasks with external load in military applications: a review.

This article provides a synopsis of the limited investigations examining the impact of external load (EL) on performance of high-intensity tasks under load (HITL), EL training intervention effects on HITL performance, and injuries from EL training. Repetitive lifting tasks and initiation of locomotion, such as rapidly moving from a prone position to sprinting appear to be more hindered by EL than maximal sprinting velocity and may explain why training with EL does not improve obstacle course or prolonged (200-300 yard shuttle) drills. EL training appears to offer very little if any benefit for HITL in lesser trained populations.

Hydration kinetics and 10-km outdoor running performance following 75% versus 150% between bout fluid replacement.

Current American College of Sports Medicine (ACSM) guidelines recommend replacing 150% of sweat losses between training bouts separated by ≤12 hours, but little evidence exists concerning the implications of this strategy for runners. Participants (n = 13) in this study replaced 75% (1637 ± 372 mL) or 150% (3099 ± 850 mL) of sweat losses following an outdoor evening run (∼75 minutes; Wet-bulb-globe temperature (WBGT) = ∼27°C) and consumed a standardised evening meal and breakfast before completing an outdoor (WBGT = ∼23°C) 10-km time-trial the following morning. Urine was collected between runs and urine specific gravity (USG) was assessed pre-run.

Influence of terminal RPE on session RPE.

Session rating of perceived exertion (RPE; SRPE), a convenient model for monitoring the overall perceived exertion of an exercise bout, is not well understood. The SRPE may be linked to final acute RPE before exercise cessation. This study investigated the potential link between terminal acute RPE (TRPE) and the SRPE using cycling trials of equated work.