Article Title



B Ylonen


B. Ylonen
Gustavus Adolphus College, St. Peter, MN

The ability to limit the effects of delayed onset muscle soreness is an important variable in recovering faster after exercise. By limiting delayed onset muscle soreness, the muscle is able to recover faster, allowing for increased performance during the next workout. There are many forms of treatment that are used to limit delayed onset muscle soreness but determining which form of treatment works best is widely debated. Symons et al. (2004) determined that there was no significant difference between the use of continuous ultrasound and sham ultrasound when treating delayed onset muscle soreness. Tiidus et al. (2002) determined that there were no significant differences between the ultrasound and the placebo treatment in their study. The purpose of this study is to examine the effects of ultrasound treatment in the management of delayed onset muscle soreness on collegiate athletes. This study includes 30 subjects randomly chosen from a Division III College athlete population. A parallel group experimental design is being used. Subjects are participating in an eccentric quadriceps workout of 100 consecutive athletic landings off of a plyometric box 24 inches high, as well as three sets of wall sits to failure. Each participant will randomly be assigned one of three possible treatments which they will receive immediately post workout. The first treatment option is receiving thermal ultrasound over the muscle belly of the rectus femoris. The second treatment option is receiving sham ultrasound over the muscle belly of rectus femoris. The third treatment option is the control group, and they are receiving no treatment. The subjects are completing a survey documenting their perceived pain over the course of 72 hours. The independent variables are thermal ultrasound, sham ultrasound, and a control group of passive recovery. The dependent variable is perceived pain. Independent t-test will analyze for significant difference (p < 0.05) in perceived pain between the independent variables. Data collection and analysis is in progress and will be complete in early March. I expect the ultrasound group and sham ultrasound group to have significantly different results in perceived pain in comparison to the control group.

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