@article{ref1,
title="Oral glutamine supplement reduces subjective fatigue ratings during repeated bouts of firefighting simulations",
journal="Safety (Basel)",
year="2019",
author="Moore, Mary and Moriarty, Terence A. and Connolly, Gavin and Mermier, Christine and Amorim, Fabiano and Miller, Kevin and Zuhl, Micah",
volume="5",
number="2",
pages="e38-e38",
abstract="Wildland firefighting requires repetitive (e.g., consecutive work shifts) physical work in dangerous conditions (e.g., heat and pollution). Workers commonly enter these environments in a nonacclimated state, leading to fatigue and heightened injury risk. Strategies to improve tolerance to these stressors are lacking. <br><br>PURPOSE: To determine if glutamine ingestion prior to and after consecutive days of firefighting simulations in the heat attenuates subjective ratings of fatigue, and evaluate if results were supported by glutamine-induced upregulation of biological stress responses. <br><br>METHODS: Participants (5 male, 3 female) ingested glutamine (0.15 g/kg/day) or a placebo before and after two consecutive days (separated by 24 h) of firefighter simulations in a heated chamber (35 °C, 35% humidity). Perceived fatigue and biological stress were measured pre-, post-, and 4 h postexercise in each trial. <br><br>RESULTS: Subjective fatigue was reduced pre-exercise on Day 2 in the glutamine group (p < 0.05). Peripheral mononuclear cell expression of heat shock protein 70 (HSP70) and serum antioxidants were elevated at 4 h postexercise on Day 1 in the glutamine trial (p < 0.05). <br><br>CONCLUSIONS: Ingestion of glutamine before and after repeated firefighter simulations in the heat resulted in reduced subjective fatigue on Day 2, which may be a result of the upregulation of biological stress systems (antioxidants, HSPs). This response may support recovery and improve work performance.<p /> <p>Language: en</p>",
language="en",
issn="2313-576X",
doi="10.3390/safety5020038",
url="http://dx.doi.org/10.3390/safety5020038"
}