Effectiveness of Clinical Ultrasound Parameters on Changing Intramuscular Temperature
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Context:
Researchers have recommended certain ultrasound treatment parameters for deep heating; however, we observed different parameters in the clinical setting.
Objective:
To compare the treatment effect of using observed clinical parameters (OCP) from 8 clinicians to the treatment effect of using the recommended parameters (RP) sited in research.
Design:
2 × 2 repeated measures design.
Setting:
Sports injury research laboratory.
Participants:
Ten healthy volunteers.
Interventions:
Two 1 MHz treatment, 1 RP treatment (1.5 W/cm2, 10-min, area-2 to 3 × ERA), and 1 OCP treatment (1.3 W/cm2, 8-min, area 3.9 × ERA)
Main Outcome Measure:
Tricep surae temperature 3 cm below superficial tissue
Results:
The RP treatment increase temperature from 36.4 ± 1.0 to 40.3± 2.0°C, which was a greater change than the OCP (36.5 ± 1.2 to 38.2 ± 1.6°C).
Conclusions:
The OCP treatment resulted in a lower heating affect than the RP. Small change in treatment area, intensity, and duration can have a large effect on temperature change.
Timothy J. Demchak is with the Athletic Training Department at Indiana State University in Terre Haute. E-mail: tdemchak@indstate.edu. Marcus B. Stone is with Alegius Consulting, LLC in Avon, IN.
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