Treatment order was balanced via Latin square and performed 24 hr apart.
Main Outcome Measures:
Peak intramuscular temperatures.
The only significant difference detected was that the mean temperature after the 1.0-W/cm2 treatment (37.3 °C) was greater than that at 2.0-W/cm2 intensity (36.1 °C). No treatment reached the desired 4° increase needed for therapeutic efficacy.
Treatments at 1.0 W/cm2 increased tissue temperatures more than those at 2.0 W/cm2.
Leonard is a doctoral student at the University of Virginia, Charlottesville, VA. Merrick is with the Athletic Training Division, The Ohio State University, Columbus, OH 43210. Ingersoll is with the graduate programs in sports medicine and athletic training, University of Virginia, Charlottesville, VA 22904-4407. Cordova is with the Athletic Training Dept, Indiana State University, Terre Haute, IN 47809.