Morphological and Mechanical Assessment in the Achilles Tendon After Radiofrequency Stimulation in Runners

448 kHz capacitive-resistive monopolar radiofrequency is an emerging physiotherapy technique whose usefulness and clinical relevance still need to be investigated. This study is a pre-post quasi-experimental study in which several variables will be measured before and immediately after 448 kHz capacitive resistive monopolar radiofrequency. It aims to analyze the morphological and mechanical changes in the Achilles tendon following the intervention in healthy runners.

Inclusion Criteria: * Adults aged 18-65, runners with at least one year of regular practice. * Must not have suffered any ligament, bone, tendon, or muscle injury in the lower limb or lumbar region during the last year. Exclusion Criteria: * History of lower limb surgery, rheumatic or neuromuscular diseases, pregnancy, or any other contraindication for radiofrecuency treatment. * Individuals with visual, auditory, or any other impairment that may affect their cognitive ability to understand the test.