Post-exercise cooling techniques in hot, humid conditions

Barwood, Martin J.; Davey, Sarah; House, James R.; Tipton, Michael J.

doi:10.1007/s00421-009-1135-1

Cited by 82 publications

(70 citation statements)

References 31 publications

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“…The idea of fanning the area in which the heat-stressed firefighters are resting following the removal of their protective clothing while immersing their hands and forearm in water may increase the heat loss by increasing air speed over the skin. Fanning the body with cool air has been shown to reduce core temperature in hyperthermic individuals (Barwood et al 2009). Future researchers may consider the effectiveness of incorporating fanning with hand and forearm immersion.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to any potential convective heat loss via cooling of blood at the skin surface, ice vests are reliant on the establishment of a conductive pathway for heat loss to take place. Recently, it has been shown with a liquid cooling garment that a 15-min time period is not sufficient for a reduction in core temperature to occur (Barwood et al 2009). It may be that this pathway of heat transfer takes longer as the cooling properties of ice need to penetrate the skin, subcutaneous fat and underlying muscle before a reduction in core temperature occurs (Otte et al 2002).…”

Section: Introductionmentioning

confidence: 98%

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The impact of different cooling modalities on the physiological responses in firefighters during strenuous work performed in high environmental temperatures

2010

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This study investigated the impact of ice vests and hand/forearm immersion on accelerating the physiological recovery between two bouts of strenuous exercise in the heat [mean (SD), 49.1(1.3)°C, RH 12 (1)]. On four occasions, eight firefighters completed two 20-min bouts of treadmill walking (5 km h, 7.5% gradient) while wearing standard firefighter protective clothing. Each bout was separated by a 15-min recovery period, during which one of four conditions were administered: ice vest (VEST), hand/forearm immersion (W), ice vest combined with hand/forearm immersion (VEST + W) and control (CON). Core temperature was significantly lower at the end of the recovery period in the VEST + W (37.97 ± 0.23°C) and W (37.96 ± 0.19°C) compared with the VEST (38.21 ± 0.12°C) and CON (38.29 ± 0.25°C) conditions and remained consistently lower throughout the second bout of exercise. Heart rate responses during the recovery period and bout 2 were similar between the VEST + W and W conditions which were significantly lower compared with the VEST and CON which did not differ from each other. Mean skin temperature was significantly lower at the start of bout 2 in the cooling conditions compared with CON; these differences reduced as exercise progressed. These findings demonstrate that hand/forearm immersion (~19°C) is more effective than ice vests in reducing the physiological strain when firefighters re-enter structural fires after short rest periods. Combining ice vests with hand/forearm immersion provides no additional benefit.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

The impact of different cooling modalities on the physiological responses in firefighters during strenuous work performed in high environmental temperatures

2010

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“…Fanning the animal and application of ice-packs may also be useful methods to reduce body temperature. Whole body fanning (Barwood, Davey, House & Tipton, 2009) and the application of ice-packs to skin areas with large superficial blood vessels (Clements et al, 2002) effectively cooled hyperthermic humans, while ice-packs on the dorsal body surface cooled dogs (Canis lupus familiaris) after exercise (Kruk, Kaciuba-Uscilko, Nazar, Greenleaf & Koz»owski, 1985).…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Different Cooling Methods for Capture-Induced Hyperthermia in Antelope

Sawicka

Fuller

Fick

et al. 2015

African Journal of Wildlife Research

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The capture of wild animals is a stressful event which may cause a capture-induced hyperthermia, resulting in morbidity or mortality. We investigated whether various cooling techniques were effective at lowering the body temperature of hyperthermic animals. To achieve this, we implanted miniature temperature-sensitive data loggers into the abdomens of 12 blesbok (Damaliscus pygargus phillipsi ). Five animals were cooled by dousing with water of different temperatures (4°C, 17°C, 28°C) and fanning after dousing with 28°C water. Seven animals were cooled by ice-packs, a fine mist spray of 28°C water, intravenous (IV) infusion of one litre of 4°C saline solution or 28°C water-dousing. The body temperature after capture was significantly elevated to as high as 41°C to 42°C. Water-dousing interventions significantly decreased minimum body temperature but there was no difference in the minimum body temperature reached or the magnitude of cooling between the different water temperatures or by the addition of fanning. The ice-packs also lowered body temperature, whereas mist spraying did not. The use of ice packs and dousing with water between 4°C and 28°C were the most effective techniques to reduce capture-induced hyperthermia in blesbok. Water-dousing, when done appropriately, is the most practical and effective method to cool an animal with capture-induced hyperthermia.

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“…The liquid-cooled garments are heavier than those using an air-cooling technique [12] [47]. Also, if the tubes imbedded in the vest are compressed, interruption of liquid flow can occur [12].…”

Section: Advantages and Disadvantages Of The Cooling Garments And Tecmentioning

confidence: 99%

Towards Optimizing a Personal Cooling Garment for Hot and Humid Deep Mining Conditions

Sayed¹,

Vinches²,

Hallé³

2016

OJOp

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Workers exposed to hot and humid conditions suffer from heat stress that affects their concentration and can potentially lead to an increase in workplace accidents. To minimize heat stress, protective equipment may be worn, such as personal cooling garments. This paper presents and discusses the performances, advantages and disadvantages of existing personal cooling garments, namely air-cooled, liquid-cooled, phase change, hybrid, gas expansion and vacuum desiccant cooling garments, and a thermoelectric cooling technology. The main objective is to identify the cooling technique that would be most suitable for deep mining workers. It appears that no cooling technology currently on the market is perfectly compatible with this type of mining environment. However, combining two or more cooling technologies into a single hybrid system could be the solution to an optimized cooling garment for deep mines.

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Post-exercise cooling techniques in hot, humid conditions

Cited by 82 publications

References 31 publications

The impact of different cooling modalities on the physiological responses in firefighters during strenuous work performed in high environmental temperatures

The impact of different cooling modalities on the physiological responses in firefighters during strenuous work performed in high environmental temperatures

Efficacy of Different Cooling Methods for Capture-Induced Hyperthermia in Antelope

Towards Optimizing a Personal Cooling Garment for Hot and Humid Deep Mining Conditions

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