🌐 EnglishEN

AI Cure is a research tool showing open data. Not medical advice. Discuss with your doctor. Terms

← Trials
🧪

Frequency-Dependent Effects of Percutaneous Femoral Nerve Stimulation on Quadriceps Strength in Athletes With Patellar Tendinopathy

RecruitingNAAges 18 Years - 40 YearsMaleHospital Clinic of Barcelona
NCT07237867 on ClinicalTrials.gov ↗
💬

In plain words

What the trial is, and whether it could suit you

This study investigates the immediate effects of different peripheral electrical nerve stimulation protocols applied to the femoral nerve on quadriceps strength in athletes with patellar tendinopathy. Patellar tendinopathy is a common overuse injury that often reduces quadriceps activation and limits sports performance. Peripheral percutaneous nerve stimulation (PPNS) and transcutaneous electrical nerve stimulation (TENS) are frequently used in rehabilitation, but their frequency-dependent effects on muscle strength are not well established. In this randomized crossover trial, each participant receives three stimulation protocols in separate sessions: high-frequency PPNS (100 Hz), low-frequency PPNS (2 Hz), and conventional TENS. All stimulation is delivered at the maximal tolerated motor threshold and, for PPNS conditions, under ultrasound guidance. Quadriceps maximal isometric strengt

Sign in to get the eligibility rules as simple questions to take to your doctor.

Sign in
📋 Eligibility rules (as published)
Inclusion Criteria: * Adults aged 18 to 40 years. * Recreational or competitive athletes with clinically diagnosed patellar tendinopathy for at least 3 months. * Ultrasound-confirmed patellar tendinopathy, including hypoechoic areas, tendon thickening, or neovascularization consistent with clinical diagnosis. Presence of pain during tendon-loading activities (e.g., jumping, running, squatting). * Ability to perform maximal voluntary isometric contractions of the quadriceps. * Ability to comply with all study procedures and attend all experimental sessions. * Written informed consent obtained prior to participation. Exclusion Criteria: * Previous knee surgery or traumatic knee injury within the past 12 months. * Complete or partial patellar tendon rupture. * Neurological disorders affecting lower limb strength or motor control. * Contraindications to electrical stimulation, including implanted electrical devices (e.g., pacemaker). * Current lower-limb radiculopathy or neuropathy. * Skin infections, open wounds, or dermatological conditions at the stimulation site. * Use of analgesics, anti-inflammatories, or corticosteroid injections within the past 48 hours. * Participation in another interventional study in the previous 30 days. * Pregnancy or suspected pregnancy.
💊

What it tests

  • Electrical stimulation
📍

Where

1 site
Blanquerna University
Barcelona, Spain
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
🛡️

AI Cure shows public evidence (Open Targets, ClinicalTrials.gov, PubMed, openFDA, DepMap, AlphaFold) with its source, and AI summaries that cite it — not medical advice and not a cure. Treatment decisions belong with your doctor. Research ideas are shared only with approved researchers and labs, who can test them. In an emergency call your local emergency number (112 in India and Europe, 911 in the US). AI Cure Terms of Use · Privacy