Document Detail

Hand cold recovery responses before and after 15 months of military training in a cold climate.
MedLine Citation:
PMID:  18785360     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: The ability of fingers to rapidly rewarm following cold exposure is a possible indicator of cold injury protection. We categorized the post-cooling hand-rewarming responses of men before and after participation in 15 mo of military training in a cold environment in northern Sweden to determine: 1) if the initial rewarming category was related to the occurrence of local cold injury during training; and 2) if cold training affected subsequent hand-rewarming responses. METHODS: Immersion of the dominant hand in 10 degrees C water for 10 min was performed pre-training on 77 men. Of those, 45 were available for successful post-training retests. Infrared thermography monitored the dorsal hand during 30 min of recovery. Rewarming was categorized as normal, moderate, or slow based on mean fingertip temperature at the end of 30 min of recovery (TFinger,30) and the percentage of time that fingertips were vasodilated (%VD). RESULTS: Cold injury occurrence during training was disproportionately higher in the slow rewarmers (four of the five injuries). Post-training, baseline fingertip temperatures and cold recovery variables increased significantly in moderate and slow rewarmers: TFinger30 increased from 21.9 +/- 4 to 30.4 +/- 6 degrees C (Moderate), and from 17.4 +/- 0 to 22.3 +/- 7 degrees C (Slow); %VD increased from 27.5 +/- 16 to 65.9 +/- 34% (Moderate), and from 0.7 +/- 2 to 31.7 +/- 44% (Slow). CONCLUSIONS: Results of the cold recovery test were related to the occurrence of local cold injury during long-term cold-weather training. Cold training itself improved baseline and cold recovery in moderate and slow rewarmers.
Helge Brändström; Helena Grip; Per Hallberg; Christer Grönlund; Karl-Axel Angquist; Gordon G Giesbrecht
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  79     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-09-12     Completed Date:  2008-10-31     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  904-8     Citation Subset:  IM; S    
University Hospital of Umeå, Umeå, Sweden.
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MeSH Terms
Acclimatization / physiology
Adaptation, Physiological*
Body Temperature Regulation
Cold Temperature / adverse effects*
Environmental Exposure / adverse effects*
Health Status Indicators
Military Medicine*
Military Personnel*
Pilot Projects
Time Factors
Vasoconstriction / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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