Thermophysiological Responses Caused by Ballistic Bullet-Proof Vests

• Published in: The Annals of occupational hygiene Vol. 51; no. 1; pp. 91 - 96
• Main Authors: LEHMACHER, E. J., JANSING, P., KÜPPER, T.
• Format: Journal Article
• Language: English
• Published: Oxford Oxford University Press 01.01.2007
• Subjects: Biological and medical sciences; Body Temperature; bullet-proof vest; Case-Control Studies; Ergonomics. Workplace layout; Ergonomics. Workplace layout. Occupational psychology; Fever - etiology; Fever - prevention & control; flak jacket; Heart Rate; Heat Stress Disorders - etiology; Heat Stress Disorders - prevention & control; Hot Temperature - adverse effects; Humans; Medical sciences; Occupational Diseases - etiology; Occupational Diseases - prevention & control; Occupational medicine; Police; Protective Clothing - adverse effects; Public health. Hygiene-occupational medicine; Skin Temperature; thermal stress; thermophysiological response; Water-Electrolyte Balance; Wounds, Gunshot - prevention & control; Europe; Germany; flak jacket; thermal stress; thermophysiological response; bullet-proof vest; Human; Temperature; Environmental factor; Occupational exposure; Stress; Heat; Ergonomics; Risk factor; Safety clothing; Fire arm; Hyperthermia; Occupational medicine; Room temperature
• ISSN: 0003-4878; 1475-3162; 1475-3162
• DOI: 10.1093/annhyg/mel056

Background: Little data is available concerning the heat stress experienced by members of staff who wear bullet-proof vests in a warm or hot environment. For this reason, knowledge is limited and, consequently, preventative advice on how to avoid heat sickness or hyperthermia is required. Study design: Skin and body temperatures, fluid loss and the heart rate of 30 persons (15 test persons versus 15 control persons) were measured in three situations typical of the test participants’ job situations. Environmental data (wind velocity, air humidity, air temperature) were measured during the tests as well. Results: Whereas there was a significant increase in skin temperatures, there was no difference in the core body temperatures of both groups. Maximum core body temperature remained well below 38°C in all subjects. Test persons wearing vests showed a fluid loss of 1.1 l on average (non-vest wearers in the control group 1.0 l). Conclusion: There is no increased risk of heat stroke or hyperthermia for employees wearing bullet-proof vests in comparison with employees who do not wear them. Both groups, however, should be advised to ensure an adequate intake of fluid to maintain a healthy body fluid balance when working in hot environments.