Effect of coupling medium temperature on rate of intramuscular temperature rise using continuous ultrasound
Deutscher übersetzter Titel: | Auswirkung der Temperatur des Kopplungsmittels auf die Geschwindigkeit des intramuskulären Temperaturanstiegs bei Anwendung von kontinuierlichem Ultraschall |
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Autor: | Oshikoya, Corey A.; Shultz, Sandra J.; Mistry, Danny; Perrin, David H.; Arnold, Brent L.; Gansneder, Bruce M. |
Erschienen in: | Journal of athletic training |
Veröffentlicht: | 35 (2000), 4, S. 422-426, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1062-6050, 0160-8320, 1938-162X |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201101000908 |
Quelle: | BISp |
Abstract
Objective: We determined the effects of coupling medium temperature on the rate of intramuscular temperature rise (RTR) during continuous ultrasound. Design and Setting: Ultrasound was applied in a continuous mode at a frequency of 1 MHz and intensity of 1.5 W/cm². Each subject received 3 treatments, using water-based coupling gel at temperatures of 18°C, 25°C, and 39°C. All treatments were performed in an athletic training room under controlled environmental conditions. Subjects: Eighteen healthy male subjects (mean age = 23.6 ± 3.5 years; height = 177.8 ± 6.9 cm; weight = 76.6 ± 8.2 kg; calf size = 37.6 ± 2.4 cm) participated in this study. Measurements: A thermistor was inserted into the left medial triceps surae at a depth of 5 cm, and baseline tissue temperatures were recorded before treatment. Intramuscular temperature was recorded every 30 seconds until the temperature rose 4°C above baseline or until discomfort was felt. RTR was calculated by dividing the absolute temperature change by treatment time. Results: A 1-way, repeated-measures analysis of variance revealed a significant difference in RTR among gel temperatures, RTR was significantly faster using the 25°C gel compared with the 18°C and 39°C gels. There was no difference between the 18°C and 39°C gel treatments. Conclusions: These results suggest that the use of a cooled or heated gel may be counterproductive when maximal thermal effects are desired within a given time frame. Verf.-Referat