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Please use this identifier to cite or link to this item: http://hdl.handle.net/1813/3059
Title: Cold Therapy of Sporting Injury in Upper Thigh Region: A Comprehensive Study on the Time Required to Achieve Optimal Cooling and the Effects of Swelling
Authors: Chen, Jack
Chiang, Ian
Hu, Alex
Huland, David
Youn, Paul
Keywords: sports injury
soft tissue injury
muscle injury
cold therapy
COMSOL
heat transfer
Issue Date: 24-May-2006
Abstract: One of the most common injuries amongst athletes is soft tissue injury due to impact, and the traditional treatment for this is cold therapy using an ice pack. While this treatment is effective, inexpensive, and easily accessible, there is very little quantitative data available on the actual effects of ice on the muscle. The most common advice found in medical textbooks and literature is a 20 minute on, 20 minute off icing cycle. In this study we model the temperature distribution in the upper leg region after one and a half cycles of ice therapy. Our axisymmetric model consists of three layers: skin, fat, and muscle, and we include an initial swelling of the muscle layer that decreases as a function of the muscle temperature. After an initial 20 minutes of cooling, the desired temperature change of 10?C penetrated to only 4 mm into the muscle layer, but after a 60 minute cycle, the desired cooling increased to 1 cm. Our sensitivity analysis revealed that slight changes in properties such as density, specific heat and conductivity did not alter the results significantly. Also, using a fixed muscle thickness independent of temperature yielded a lower temperature drop in the muscle layer. It was concluded that ice therapy, though slow, is effective in cooling some of the muscle to the desired temperature, and its main advantages stem from its inexpensiveness and ease of application.
URI: http://hdl.handle.net/1813/3059
Appears in Collections:BEE 4530 - 2006 Student Papers

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