INFLUENCE OF LOCALIZED AUXILIARY HEATING ON HAND COMFORT DURING COLD EXPOSURE

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Authors
  1. Brajkovic, D.
  2. Ducharme, M.B.
  3. Frim, J.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
There is a need for a hand-heating system that will keep the hands warm during cold exposure without hampering finger dexterity. The purpose of this study ws to examine the effects of torso heating on the vasodilative responses and comfort levels of cooled extremities during a 3-h exposure to -15C air. Subjects were insulated, but their upper extremities were left exposed to the cold ambient air. The effect of heating the torso (torso-heating test (THT)) on hand comfort was compared with a control condition in which no torso heating was applied, but Arctic mitts were worn (control test (CT)). The results indicate that mean finger temperature, mean finger blood flow, mean toe temperature, mean body skin temperature, body thermal comfort, mean finder thermal comfort, and rte of body heat storage were all significantly (P < 0.05) higher on average (n = 6) during THT. Mean body heat flow was significantly (P < 0.05) lower during THT. There were no significant differences (P greater than or equal to 0.05) in rectal temperature between CT and THT. Mean unheated body skin temperature and mean unheated body heat flow (both of which did not include the torso area in the calculation of mean body skin temperature and mean body heat flow) were also calculated. TRUNCATED
Keywords
Heating equipment;Protective equipment
Report Number
DCIEM-98-P-20 — Reprint
Date of publication
01 Mar 1998
Number of Pages
13
Reprinted from
J Appl Physiol, vol 85, no 6, 1998, p 2054-2065
DSTKIM No
99-00214
CANDIS No
510025
Format(s):
Hardcopy;Document Image stored on Optical Disk

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