Ultrasound Assessment of Myofascial Trigger Points

Both groups of participants-those with myofascial and/or musculoskeletal pain and those without musculoskeletal alterations-will undergo a standardized intervention focused on the application of vibratory stimuli, alongside real-time ultrasound imaging. Vibratory stimuli will be applied directly to the region of interest, specifically over the identified MTrP in participants with active myofascial pain. In participants without musculoskeletal alterations, the stimuli will be applied either over a latent MTrP or in a randomly selected area of the gastrocnemius medialis muscle, ensuring a consistent methodology across both groups. Simultaneously, real-time ultrasound imaging will be performed to capture detailed images of the muscle tissue during the application of vibratory stimuli. Imaging will be conducted in two planes (longitudinally and transversely).