Thermal-work strain during Marine rifle squad operations in Afghanistan.
| Autor: | Welles AP; Biophysics and Biomedical Modeling Division, U.S. Army Research Institute of Environmental Medicine, 44 Kansas Street, Building 42, Natick, MA 01760., Buller MJ, Margolis L, Economos D, Hoyt RW, Richter MW |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Military medicine [Mil Med] 2013 Oct; Vol. 178 (10), pp. 1141-8. |
| DOI: | 10.7205/MILMED-D-12-00538 |
| Abstrakt: | The physiological burden created by heat strain and physical exercise, also called thermal-work strain, was quantified for 10 male Marines (age 21.9 ± 2.3 years, height 180.3 ± 5.2 cm, and weight 85.2 ± 10.8 kg) during three dismounted missions in Helmand Province, Afghanistan. Heart rate (HR) and core body temperature (T core) were recorded every 15 seconds (Equivital EQ-01; Hidalgo, Cambridge, United Kingdom) during periods of light, moderate, and heavy work and used to estimate metabolic rate. Meteorological measures, clothing characteristics, anthropometrics, and estimated metabolic rates were used to predict T core for the same missions during March (spring) and July (summer) conditions. Thermal-work strain was quantified from HR and T core values using the Physiological Strain Index (PSI) developed by Moran et al. July PSI and T core values were predicted and not observed due to lack of access to in-theater warfighters at that time. Our methods quantify and compare the predicted and observed thermal-work strain resulting from environment and worn or carried equipment and illustrate that a small increase in ambient temperature and solar load might result in increased thermal-work strain. (Reprint & Copyright © 2013 Association of Military Surgeons of the U.S.) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|