Opposite is true for hot whirpool treatments. Disadvantages Contrast baths do not appear to significantly influence subcutaneous tissue temperatures at depths greater than 1cm. Usable in areas that water immersion cannot reach, i.e., neck. Disadvantages Superficial heat modality Can burn individual if laying on heat pack. H. Shortwave Diathermy - Electromagnetic energy passes into patients body and is absorbed by the selected tissues.
Ions react to the energy, and heat is caused by friction between moving ions.
Disadvantages Less effective on people with a large amount of body fat. No metal with treatment area, both outside and inside body.