Acute Effects of Patellar Tendon Ultrasound on Countermovement Jump Performance

Starting soon · Not applicable · Has a placebo group

Conditions studied: Muscle Performance

In brief

This randomized, double-blind, controlled trial aims to investigate the acute effects of therapeutic ultrasound applied to the patellar tendon on vertical jump performance in healthy university students. Therapeutic ultrasound is widely used in physiotherapy to influence soft tissue properties through thermal and mechanical effects; however, its immediate impact on explosive lower-extremity performance and neuromuscular function remains unclear. Participants will be randomly assigned to either a therapeutic ultrasound group or a sham ultrasound (placebo) group. In the intervention group, therapeutic ultrasound will be applied to the patellar tendon using a frequency of 1 MHz and an intensity of 1.5 W/cm² in continuous mode for 5 minutes. In the control group, a sham ultrasound procedure will be performed using the same device and duration without delivering therapeutic energy. Both the participants and the outcome assessor will be blinded to group allocation. Vertical jump performance will be evaluated using the countermovement jump (CMJ) test recorded with the My Jump 2 smartphone application. In addition, quadriceps muscle strength will be measured using a hand-held dynamometer, and knee joint position sense will be assessed using a joint position reproduction test. All measurements will be conducted before and immediately after the intervention. This study will provide evidence regarding whether therapeutic ultrasound applied to the patellar tendon can acutely influence explosive performance, muscle strength, and proprioception in healthy individuals.

Key facts

Study ID

NCT07507695

Run by

Muş Alparslan University

People needed

40

Starts

2026-04-20

Expected to finish

2026-05-01

Last updated by the study team

2026-04-02

Who can join

Age: 18 and older, up to 35. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Healthy university students aged 18-35 years
• No history of lower extremity injury or surgery in the past 12 months
• No current musculoskeletal or neurological disorders affecting the lower limbs

You may not qualify if…

• History of patellar tendon injury or knee pain
• Contraindications to therapeutic ultrasound (e.g., skin lesions, open wounds at the knee, or implanted electronic devices)
• Any cardiovascular, neurological, or musculoskeletal condition that may affect jump performance
• Use of medications that could affect neuromuscular function (e.g., muscle relaxants)

Full record on ClinicalTrials.gov

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