All Volumes (2001-2008)


Volume VII, 2008

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Poor muscle flexibility has often been associated with injury. Therapeutic heating modalities are frequently used to increase the extensibility of the muscle. The purpose of this study was to compare immediate changes in hamstring flexibility following the application of superficial (moist heat pack) and deep (1 MHz ultrasound) heating modalities. Twenty-four college aged subjects met the inclusion criteria and volunteered for this study. Subjects reported to the Athletic Training Lab and received either the ultrasound or moist heat pack treatment. Hamstring flexibility was measured pre and post treatment using an active knee extension test with an inclinometer. An average of three measurements was used in the analysis. Subjects who received the ultrasound treatment showed greater immediate gains in hamstring flexibility. Therefore ultrasound would be the recommended treatment for increasing extensibility of the hamstring muscles.