Abstract
Objective To study changes in supraspinatus tendon elasticity after a 448 kHz capacitive resistive monopolar radiofrequency (CRMR) intervention in professional badminton players. Design Double-blinded randomized clinical trial. Setting All participants were recruited in a private care practice. Participants were randomized to receive either a CRMR treatment (n = 19) or placebo (n = 19). Subjects Professional badminton players (n = 38). Intervention A total of nine intervention (three per week) with CRMR at 448 kHz were carried out in the experimental group. The same intervention without an active CRMR current was carried out in the control group. Main measures Mean values of three different regions of the supraspinatus tendon were reported at baseline (T1), immediately after the intervention (T2) and one week after the end of the whole intervention program (T3) using quantitative ultrasound strain elastography (SEL). Results There were statistically significant differences in the supraspinatus tendon elasticity immediately after the intervention (p= <.001) and one week after the end of the whole intervention program (p=.001). Conclusion CRMR at 448 kHz produces significant changes in supraspinatus tendon elasticity after an intervention program of three weeks and those changes last for a week when compared to control group. Clinical trial registration: NCT04273633 (ClinicalTrials.gov).
Highlights
Radiofrequency is a well-known technology that has been widely used in clinical settings
The current, known as capacitive resistive monopolar radiofrequency (CRMR), uses an active circular electrode that can be moved during the treatment and creates the stimulating electrical voltage, and a passive rectangular electrode which remains at the same place throughout the treatment process as the returning electrode [1,2,3]
The hypothesis of the present study is that the application of 448 kHz CRMR can produce changes in supraspinatus tendon elasticity measured by strain elastography (SEL)
Summary
Radiofrequency is a well-known technology that has been widely used in clinical settings. The hypothesis of the present study is that the application of 448 kHz CRMR can produce changes in supraspinatus tendon elasticity measured by SEL. This can be explained through the relationship between vascularization, viscoelasticity and temperature increase [24,27]. It is currently known that there are structural changes and alterations in the tendon morphology of healthy people when assessed by ultrasound [29] These alterations may indicate weak points of the soft tissue that is likely to suffer from injury, pain may not be present [13,29]. The aim of the study is to assess SEL changes in supraspinatus tendon after 448 kHz CRMRF treatment in healthy professional badminton players
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