Date of Award
Spring 8-1-2005
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Athletic Training
First Advisor
Timothy J. Demchak
Second Advisor
Jody B. Brucker
Third Advisor
Catherine Stemmans
Abstract
Context: Thermal ultrasound has been used for the past two decades because of its ability to increase underlying local tissue temperatures promoting healing. It is recommended that ultrasound treatment be performed on a 2-3 ERA area for 10 minutes. However, clinicians often need to treat larger areas using ultrasound, clinicians may add to the possible treatment sights and not rely on or purchase other machines. Research has yet to investigate if therapeutic levels can be obtained by increasing the treatment time. Objective: To investigate if increasing the duration of an ultrasound treatment with a treatment area of 4 timesthe sound head, produces therapeutic heating effects. Design: A 1 X 6 factorial design with repeated measures was used to guide this study. The independent variable was time (Pre-TX, 0, min, 5 min, 10 min, 15 min, and 20 min). The dependent variable was triceps surae temperature. Setting: All measures were completed in a laboratory setting. Participants: Ten healthy volunteers (age 25 ± 4 years, M= 4, F= 6) participated in this study. Intervention: Each participant received a 20 minute treatment at 1 MHz, 1.5 watt/cm2 with a 100% duty cycle over a treatment area that was 4 x transducer. Main outcome measure: Medial tricep surae muscle temperature 3 cm below cutaneous tissue. Results: The temperature increased 1.7 °C ± 1.21 above pretreatment temperature 5 minutes into the treatment. The treatment continued to increase until 10 minutes (2°C ± 0.92 above pre-treatment temperature) and stabilized for 15 min (2.4°C ± 0.76) and 20 min (2.5°C ± 0.69). Conclusions: The 20 minute ultrasound on an area of 4 ERA produced and maintained an intramuscular temperature increase 2 °C - 2.5°C above Pre-Tx temperatures during the first 10 minutes of treatment. The temperature did not increase beyond the first 10 minutes of treatment.
Recommended Citation
Meyer, Lori B., "Therapeutic Benefits of Ultrasound Can Be Achieved and Maintained With 1 MHZ, 4 ERA Ultrasound Treatment" (2005). All-Inclusive List of Electronic Theses and Dissertations. 3542.
https://scholars.indianastate.edu/etds/3542