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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
|
| pubmed:dateCreated |
1988-8-9
|
| pubmed:abstractText |
We examined the feasibility of providing ambient air during exercise and conditioned (cooled) air during rest on reducing physiological strain and optimizing tolerance time. Six male soldiers attempted 250-min exposures in hot/dry and hot/wet environments. Subjects wore chemical protective clothing over the combat vehicle crewman uniform and an air-cooled vest. They alternated between 50 min of treadmill walking (420 W) and 50 min of rest (105 W). During the walks, a backpack mounted blower provided a total of 10 or 18 cfm of air to the vest and face; while subjects received 18 cfm of conditioned air from an umbilical during rest. A control test with conditioned air during rest, but only a ventilated facepiece during work was also conducted in the hot/dry environment. In the hot/dry environment the ambient air backpack extended (p less than 0.05) tolerance time and significantly reduced rectal temperatures, heart rates and sweating rates compared to control; no differences were found between 10 and 18 cfm. In the hot/wet environment, tolerance time was extended compared to a predicted tolerance time assuming no microclimate cooling. We conclude that the ambient air backpack reduced physiological strain and improved tolerance time of combat vehicle crewmen during exercise in the heat.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jun
|
| pubmed:issn |
0095-6562
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
59
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
553-8
|
| pubmed:dateRevised |
2008-11-21
|
| pubmed:meshHeading |
pubmed-meshheading:3390114-Adult,
pubmed-meshheading:3390114-Air Conditioning,
pubmed-meshheading:3390114-Body Temperature,
pubmed-meshheading:3390114-Desert Climate,
pubmed-meshheading:3390114-Humans,
pubmed-meshheading:3390114-Male,
pubmed-meshheading:3390114-Military Personnel,
pubmed-meshheading:3390114-Physical Exertion,
pubmed-meshheading:3390114-Protective Clothing,
pubmed-meshheading:3390114-Time Factors,
pubmed-meshheading:3390114-Tropical Climate
|
| pubmed:year |
1988
|
| pubmed:articleTitle |
Portable, ambient air microclimate cooling in simulated desert and tropic conditions.
|
| pubmed:affiliation |
U.S. Army Research Institute of Environmental Medicine, Natick, MA 01760-5007.
|
| pubmed:publicationType |
Journal Article
|