دورية أكاديمية
Cognitive, Psychomotor, and Physical Performance in Cold Air After Cooling by Exercise in Cold Water
| العنوان: | Cognitive, Psychomotor, and Physical Performance in Cold Air After Cooling by Exercise in Cold Water |
|---|---|
| المؤلفون: | O'Brien, Catherine, Tharion, Ingrid V. Sils, and John W. Castellani, William J. |
| المساهمون: | ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION |
| المصدر: | DTIC |
| سنة النشر: | 2007 |
| المجموعة: | Defense Technical Information Center: DTIC Technical Reports database |
| مصطلحات موضوعية: | Stress Physiology, Medicine and Medical Research, COLD TOLERANCE, TEMPERATURE, PREDICTIONS, PERFORMANCE(HUMAN), COLD WEATHER OPERATIONS, VOLUNTEERS, HYPOTHERMIA, IMMERSION, MRMP(MISSION-RELATED PERFORMANCE MEASURES), COLD WATER IMMERSIONS, CORE BODY COOLING, LOCAL TISSUE COOLING |
| الوصف: | This study evaluated performance after lowering core temperature at different rates while local tissues were either cooled (lower body) or not cooled (upper body). Methods: There were 10 men who volunteered to perform up to 8 cold water immersions (CWI) at combinations of 2 water temperatures (10 deg C and 15 deg C), 2 depths [waist (W), chest (C)], and 2 walking speeds (0.44 or 0.88 m/s^-1) until their core temperature fell to 35.5 deg C, stabilized above that temperature, or they requested to stop. They also completed a control trial (120 min rest in 19 deg C air). Immediately following each CWI and control, cognitive and physical performance tests were performed in cold air (10 deg C; CAE). Results: Overall, the CWI protocol lowered rectal temperature by 0.3-1.0 deg C. Mean skin temperature was ~26 deg C and finger temperature was ~15 deg C during CAE. No statistical differences were observed across trials for any cognitive test. On the physical performance tests, step test performance was degraded ~12% on CWI trials compared with control, but there were no differences in manual dexterity, hand grip strength, marksmanship, or pull-ups. Conclusions: These results indicate that cognitive performance can be maintained despite mild hypothermia, and that physical performance is related to local tissue temperature, not a moderately reduced core temperature. ; Published in Aviation, Space, and Environmental Medicine, v78, n6 ,p568-573, June 2007. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| العلاقة: | http://www.dtic.mil/docs/citations/ADA468440Test |
| الإتاحة: | http://www.dtic.mil/docs/citations/ADA468440Test http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA468440Test |
| حقوق: | Approved for public release; distribution is unlimited. |
| رقم الانضمام: | edsbas.5AAD41D2 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |