Date of Award

8-2007

Degree Name

Master of Arts

Department

Health, Physical Education, and Recreation (to 2011)

First Advisor

Dr. Michael Miller

Second Advisor

Dr. Christopher Cheatham

Third Advisor

Dr. Timothy Michael

Fourth Advisor

Dr. Robert Baker

Access Setting

Masters Thesis-Campus Only

Abstract

Context: The research surrounding the thermal effects of ultrasound measures temperature solely in the middle of the effective radiating area (ERA). Objective: To determine whether uniform intramuscular heating is achieved throughout the ERA at both 1 and 3 MHz. Participants: Seven male and three female students with no history of lower leg trauma within the past six months. Inventions: Each subject underwent two ultrasound treatments conducted in the triceps surae muscle group. Ten minute baseline temperatures were records every 30 seconds followed by a ten minute baseline ultrasound treatment. A two-way (site X time) repeated measures ANOV A was used to determine statistical significance. In the case of a significant interaction, post-hoc testing was performed using a simple effects analysis with the Bonferroni adjustment. Results: A significant site-by-time interaction was observed for both the 1 and 3 MHz treatments. Conclusions: The temperature for both 1 and 3 MHz differ significantly suggesting that uniform heating does not occur.

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