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Randomized Controlled Trial
. 2020 Feb;26(2):147-153.
doi: 10.1089/acm.2019.0165. Epub 2019 Oct 3.

Does the Application of Tecar Therapy Affect Temperature and Perfusion of Skin and Muscle Microcirculation? A Pilot Feasibility Study on Healthy Subjects

Ron Clijsen  1   2   3 , Diego Leoni  4 , Alessandro Schneebeli  4 , Corrado Cescon  4 , Emiliano Soldini  4   5 , Lihui Li  4 , Marco Barbero  4
Affiliations
Randomized Controlled Trial

Does the Application of Tecar Therapy Affect Temperature and Perfusion of Skin and Muscle Microcirculation? A Pilot Feasibility Study on Healthy Subjects

Ron Clijsen et al. J Altern Complement Med. 2020 Feb.

Abstract

Background: Tecar therapy (TT) is an endogenous thermotherapy used to generate warming up of superficial and deep tissues. TT capability to affect the blood flow is commonly considered to be the primary mechanism to promote tissue healing processes. Despite some preliminary evidence about its clinical efficacy, knowledge on the physiologic responses induced by TT is lacking. Objective: The aim of this quantitative randomized pilot study was to determinate if TT, delivered in two modes (resistive and capacitive), affects the perfusion of the skin microcirculation (PSMC) and intramuscular blood flow (IMBF). Design: A randomized controlled pilot feasibility study. Subjects: Ten healthy volunteers (n = 4 females, n = 6 males; mean age 35.9 ± 10.7 years) from a university population were recruited and completed the study. Intervention: All subjects received three different TT applications (resistive, capacitive, and placebo) for a period of 8 min. Outcome measures: PSMC, IMBF, and the skin temperature (ST) were measured pre- and post-TT application using power Doppler sonography, laser speckle contrast imaging (LSCI), and infrared thermography. Results: Compared with placebo application, statistically significant differences in PSMC resulted after both the resistive (p = 0.0001) and the capacitive (p = 0.0001) TT applications, while only the resistive modality compared with the placebo was capable to induce a significant change of IMBF (p = 0.013) and ST (p = 0.0001). Conclusions: The use of power Doppler sonography and LSCI enabled us to evaluate differences in PSMC and IMBF induced by TT application.

Keywords: diathermy; laser speckle contrast imaging; perfusion imaging; physical therapy modality; regional blood flow; skin temperature.

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Conflict of interest statement

No competing financial interests exist.

Figures

FIG. 1.
FIG. 1.
Standardized reference frame for the application of Tecar therapy.
FIG. 2.
FIG. 2.
(A) Example of a power Doppler image with background noise. (B) Example of a filtered power Doppler image for the calculation of the blood flow area. (C) Histogram of blue color intensity computed in the extracted area.
FIG. 3.
FIG. 3.
Laser speckle contrast images before and after resistive Tecar application. The brighter dots in the postimages represent an increase of skin perfusion.
See this image and copyright information in PMC

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