High intensity Laser Therapy (HILT): High-intensity laser therapy (HILT) is applied to the tendon using a BTL-6000 High Intensity Laser device. Participants assigned to the active intervention receive one of three power settings: 2 W for 6 minutes 59 seconds, 10 W for 1 minute 24 seconds, or 20 W for 42 seconds. Treatment is administered twice weekly for 4 weeks, for a total of 8 sessions. Ultrasound assessments of the tendon are performed during the study to evaluate structural and vascular changes.
Study summary
This randomized controlled trial evaluates the effects of high-intensity laser therapy (HILT) on tendon structure and vascularization in healthy university students. Participants are randomly assigned to receive HILT at different power settings or a placebo intervention. The intervention is administered twice a week for four weeks. Tendon thickness and vascularization are assessed using ultrasound and Doppler imaging before and during the intervention period. The study aims to determine whether different HILT power settings produce changes in tendon structure or vascularization in healthy individuals.
Eligibility
Sex
ALL
Min age
18 Years
Max age
30 Years
Healthy volunteers
Accepted
Inclusion Criteria:
University students aged 18 to 30 years. Male or female participants. Body mass index (BMI) between 18.0 and 29.9 kg/m². Intact thermal sensitivity and ability to perceive and communicate pain. Willingness to participate in the study. Provision of written informed consent.
Exclusion Criteria:
Metabolic or cardiovascular diseases. Active infections. History of fractures affecting the study region. Tumors. Pregnancy. Use of medications that may affect blood circulation, pain perception, or mental status.
Skin alterations in the treatment area, including ulcers, hematomas, or psoriasis.
Previous surgery or scars in the patellar tendon region. Knee prosthesis or previous knee arthroplasty. Acute inflammation.
Primary outcome measure(s)
Change in Tendon Thickness — Baseline and throughout the 4-week intervention period Tendon thickness will be assessed by musculoskeletal ultrasound using a linear transducer. Measurements will be recorded in millimeters (mm) and compared across the intervention period to assess changes associated with HILT at different power settings and placebo.
Change in Tendon Vascularization — Baseline and throughout the 4-week intervention period Tendon vascularization will be assessed along the tendon using Doppler ultrasound. The presence of vascularization will be evaluated during the study to determine whether repeated HILT application at different power settings produces changes in tendon vascularity compared with placebo.
Trial sites (1)
Facility
City
Region
Status
CSEU La Salle
Madrid
Madrid
More Centro Universitario La Salle trials in Spain
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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