Tissue Temperature Increase Using Immersion Therapeutic Ultrasound at 3 MHz, 10 Minutes, 1.5 cm Depth, with Varying Intensities of 1.0 W/cm2, and 1.5 W/cm2
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Date
2016
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North Dakota State University
Abstract
The purpose of this study was to examine the thermal effects of both 1.0W/cm2 and
1.5W/cm2 at 3MHz with continuous US while the triceps-surae is immersed in 37°C water.
Intramuscular tissue temperature increases observed through the thermocouples at 1.5W/cm2 was
compared to 1.0W/cm2. The study is needed to determine which intensity was most efficient at
increasing intramuscular tissue temperature in the triceps-surae at a 1.5cm depth. Twenty college
students, 10-males and 10-females (M=23.45 ± 1.986-years), participated in 2 sessions. A
thermocouple measuring intramuscular temperature was inserted into the gastrocnemius muscle.
There were no significant differences in intramuscular temperature increases at 0-minutes
(M=0.1320, SE=0.5617), 5-minutes (M=-0.3570, SE=0.5617), and 10-minutes (M= -0.6885,
SE=0.569). This study indicated no significant difference between intensities 1.0W/cm2 and
1.5W/cm2 throughout a 10-minute treatment. Clinically selecting appropriate parameters should
be done to best treat patients. This study provides evidence that increasing intensity does not
always increase tissue temperature.