Effectiveness of a Jumper's Knee Strap as an Adjunct to Exercise Therapy in Individuals with Patellar Tendinopathy: A Randomized Controlled Trial

Effectiveness of a Jumper's Knee Strap as an Adjunct to Exercise Therapy in Individuals with Patellar Tendinopathy: A Randomized Controlled Trial - JUMP-PT

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00040645

Enrollment

Registered

2026-07-20

Start date

2026-10-01

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

M76.5

Interventions

Group 1: Participants complete a 12-week standardized physiotherapy exercise program based on Progressive Tendon Loading (PTL) and Heavy Slow Resistance (HSR) principles. In addition, participants wea

Eligibility

Sex/Gender

Female

Age

18 Years to 50 Years

Inclusion criteria

Inclusion criteria: Ultrasound-confirmed patellar tendinopathy Activity-related anterior knee pain for at least 3 months Positive palpation findings at the inferior pole of the patella VISA-P-G score < 80 points Reproducible pain during the Single-Leg Decline Squat Test Regular participation in sports activities (minimum of 2 lower-extremity training sessions per week) Written informed consent

Exclusion criteria

Exclusion criteria: Other causes of anterior knee pain (e.g., patellofemoral pain syndrome, meniscal pathology, ligament injuries, iliotibial band syndrome, plica syndrome) Previous surgery on the affected knee Acute knee trauma Inflammatory or systemic diseases Pregnancy Corticosteroid injection within the previous 6 months Regular use of pain medication or anti-inflammatory medication Known latex allergy

Design outcomes

Primary

Measure	Time frame
Change in VISA-P-G score (Victorian Institute of Sport Assessment – Patellar Tendinopathy, German version) from baseline (T0) to week 12 (T12). The VISA-P-G is assessed using a validated patient-reported outcome questionnaire and serves as the primary outcome measure for pain, function, and sports participation in individuals with patellar tendinopathy. Assessments are performed at T0, T4, T8, and T12.	—

Measure

Time frame

Change in VISA-P-G score (Victorian Institute of Sport Assessment – Patellar Tendinopathy, German version) from baseline (T0) to week 12 (T12). The VISA-P-G is assessed using a validated patient-reported outcome questionnaire and serves as the primary outcome measure for pain, function, and sports participation in individuals with patellar tendinopathy. Assessments are performed at T0, T4, T8, and T12.

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Secondary

Measure	Time frame
Change in pain intensity during loading activities assessed using a Numeric Rating Scale (NRS, 0–10) Change in pain during the Single-Leg Decline Squat Test (SLDS) Change in Kujala Score assessing functional limitations related to anterior knee pain Change in maximal concentric quadriceps strength measured using a Milon-Q strength assessment device All secondary outcomes are assessed at baseline (T0), week 4 (T4), week 8 (T8), and week 12 (T12).	—

Measure

Time frame

Change in pain intensity during loading activities assessed using a Numeric Rating Scale (NRS, 0–10) Change in pain during the Single-Leg Decline Squat Test (SLDS) Change in Kujala Score assessing functional limitations related to anterior knee pain Change in maximal concentric quadriceps strength measured using a Milon-Q strength assessment device All secondary outcomes are assessed at baseline (T0), week 4 (T4), week 8 (T8), and week 12 (T12).

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Countries

Germany

Contacts

Public ContactKevin Fernsimer

Deutsche Sporhochschule Köln

kevin.fernsimer@web.de015146297506

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Aug 10, 2026