Stress Response to Winter Warfare Training: Potential Impact of Location.

Introduction: Winter warfare training (WWT) is a critical component of military training that trains warfighters to operate effectively in extreme environments impacted by snow and mountainous terrain. These environmental factors can exacerbate the disruption to the hormone milieu associated with operating in multi-stressor settings. To date, there is limited research on the physiological responses and adaptations that occur in elite military populations training in arduous environments.

Altered Sympathoadrenal Activity Following Cold-Water Diving.

Introduction: Little data exist on the effect of extremely cold-water diving on thermo-metabolic hormone secretion. Moreover, the impact of repetitive dives on the stress response is unknown. The purpose of this study was to determine the effects of two daily bouts of cold-water diving on the hormonal and metabolic profile of elite military personnel and to measure the stress response.

Efficacy of closed cell wet-suit at various depths and gas mixtures for thermoprotection during military training dives.

To evaluate a closed-cell wet-suit for thermal protective capability during extreme cold water exposure at various depths. Thirteen (n = 13) elite military divers who were tasked with cold-water training, participated in this study. To mimic various depths, the Ocean Simulation Facility (OSF) at the Navy Experimental Diving Unit (NEDU) was pressurized to simulate dive depths of 30, 50, and 75fsw.

Exercise training with blood flow restriction has little effect on muscular strength and does not change IGF-1 in fit military warfighters.

Objective: Aerobic exercise with blood flow restriction (aBFR) has been proposed as an adjunctive modality in numerous populations, potentially via an enhanced growth factor response. However, the effects of aBFR on highly trained warfighters have yet to be examined. The purpose of this study was to determine if adjunctive aBFR as part of a regular physical training regimen would increase markers of aerobic fitness and muscle strength in elite warfighters.

DEET insect repellent: effects on thermoregulatory sweating and physiological strain.

Insect repellents (e.g. N,N-diethyl-m-toluamide or DEET) applied to the skin can potentially interfere with sweat production and evaporation, thus increasing physiological strain during exercise-heat stress.

Prior heat stress: effect on subsequent 15-min time trial performance in the heat.

Unlabelled: The impact of prior heat stress on subsequent aerobic exercise-heat performance has not been studied.

Purpose: To determine whether prior heat stress degrades subsequent aerobic exercise performance in the heat.

Methods: Eighteen nonheat acclimated males were trained (four practice trials) on an aerobic exercise performance test in 22 degrees C and then divided into two (n = 8) groups.