A Comparison of Temperature Increases Produced by 2 Commonly Used Ultrasound Units

Document Type

Article

Publication Date

1-2003

Abstract

Objective:

To compare temperature changes produced by 2 commonly used ultrasound units.

Design and Setting:

We inserted a thermistor microprobe connected to a digital monitor into the medial belly of the triceps surae muscle at a depth of 1.2 cm. We administered ultrasound with both the Omnisound 3000 and the Forte 400 Combo through 5-cm2 sound heads. Continuous ultrasound was administered at a frequency of 3 MHz and an intensity of 1.0 W/cm2.

Subjects:

Ten (5 men, 5 women) healthy subjects (age = 21.9 ± 0.87 years, height = 175 ± 0.09 cm, mass = 74.2 ± 13.3 kg) volunteered to participate in this study.

Measurements:

We monitored temperature continuously during 10 minutes of ultrasound. Temperature was allowed to return to baseline between trials, and the treatment order was counterbalanced.

Results:

We analyzed the mean temperature changes over baseline with a 2–within-factor (ultrasound unit) × 2–between-factor (sex) mixed-design analysis of variance. The mean temperature elevation was significantly greater with the Omnisound 3000 than with the Forte 400 Combo (P = .0001). Temperature increased by 5.81 ± 0.41°C with the Omnisound 3000 and only by 3.85 ± 0.75°C with the Forte 400 Combo.

Conclusions:

We concluded that the Omnisound 3000 was more effective in raising temperature in tissues at a depth of 1.2 cm.

Publication Title

Journal of Athletic Training

Volume

38

Issue

1

First Page

24

Last Page

27

PubMed ID

PMC155507

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