EFFECTIVENESS OF ICE-VEST COOLING IN PROLONGING WORK TOLERANCE TIME DURING HEAVY EXERCISE IN THE HEAT FOR PERSONNEL WEARING CANADIAN FORCES CHEMICAL DEFENCE ENSEMBLES

Authors
  1. Bain, B.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The effectiveness of a portable, ice-pack cooling vest (Steelevest) in prolonging work tolerance time in chemical defence clothing in the heat (33C dry bulb, 33% relative humidity or 25C WBGT) was evaluated while subjects exercised at a metabolic rate of approximates to 700 watts. Six male subjects performed a 20 minute treadmill walk at 1.33 m.s1(-) (4.8 km-h1(-)) and 7.5% grade, followed by a lifting task which involved lifting a 20 kg box and carrying it 3 metres, setting the box down and walking 6 metres (3 m back to the start point and 3 m back to the box) in 15 sec. This cycle was performed repetitively for 15 minutes. The subjects rested for 5 minutes, resumed the lifting task for 20 minutes and then began again with the treadmill walk. The time to voluntary cessation or physiological endpoint was called the work tolerance time. TRUNCATED
Report Number
DCIEM-91-06 —
Date of publication
15 Jan 1991
Number of Pages
12
DSTKIM No
91-01873
CANDIS No
69075
Format(s):
Hardcopy;Originator's fiche received by DSIS

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