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Efficacy of Inertial Flywheel vs Heavy Slow Resistance Training Among Athletes With Patellar Tendinopathy

Efficacy of Inertial Flywheel vs Heavy Slow Resistance Training Among Athletes With Patellar Tendinopathy

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03917849
Enrollment
42
Registered
2019-04-17
Start date
2018-01-02
Completion date
2020-03-22
Last updated
2020-07-15

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

Conditions

Jumper's Knee, Patellar Tendinitis

Brief summary

The purpose of this project is to investigate the efficacy of Inertial Flywheel Resistance program vs Heavy slow resistance in patients with chronic patellar tendinopathy. The investigators hypothesize that Inertial Flywheel Resistance program will yield a more positive clinical outcome and function in patients with patellar tendinopathy compared to heavy slow resistance group.

Detailed description

Randomized controlled intervention study

Interventions

BEHAVIORALExercises program for patellar tendinopathy

To compare the effectiveness of the inertial flywheel resistance program versus slow heavy resistance in patients with chronic patellar tendinopathy

Sponsors

Universidad Nacional de Córdoba
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
No

Inclusion criteria

* Clinical diagnosis of patellar tendinopathy * Symptoms \> 3 months * Pain localized to the inferior pole of the patella * Victorian Institute of Sport Assessment (VISA) score less than 80 points * Palpation tenderness of the patellar tendon * Abnormal tendon (hypoechoic) confirmed by ultrasonography.

Exclusion criteria

* Previous knee surgery * Confounding diagnosis to the knee joint * Previous corticosteroids injections * Arthritis or diabetes

Design outcomes

Primary

MeasureTime frameDescription
Victorian Institute of Sports Assessment (VISA-P questionnaire)0 - 12 weeksSelf-administered questionnaire. Consists of 8 items; 6 are used to evaluate pain levels or disability in daily activities and specific functional tests and 2 provide information regarding ability to play sport. Response options for each item are provided on a numeric rating scale (from 0 to 10), with higher scores indicating lower levels of pain or disability for all items other than 7 and 8, for which options have weighted scores.

Secondary

MeasureTime frameDescription
Patient Global Impression of Change12 weeksRegister patient's belief about the efficacy of treatment. PGIC is a 7 point scale depicting a patient's rating of overall improvement. Patients rate their change as very much improved, much improved, minimally improved, no change, minimally worse, much worse, or very much worse.
Adverse events12 weeksTo capture all adverse events and side effects that occurred after exercises protocol. Patients reported any changes or any symptoms. If a question was answered yes, we asked for further comments.
Adherence self-report questionnaire12 weeksPatients were asked to choose one of six descriptions (from level 1 = perfect adherence to level 6 = nonadherence) to express exercise treatment at the end of the twelve weeks study period.
Patient-Specific Functional Scale0 - 12 weeksSelf-reported patient-specific outcome measure assess functional change, primarily in patients presenting with musculoskeletal disorders. Patients are asked to identify up to 3 important activities they are unable to perform or are having difficulty with as a result of their problem. In addition to identifying the activities, patients are asked to rate, on an 11-point scale, the current level of difficulty associated with each activity. Following the intervention, patients are asked again to rate the activities previously identified.
Knee extension machine test0 - 12 weeksA reliable patellar tendon pain provocation test, will be used to assess pain. Pain is rated on an 11-point numeric rating scale, where 0 is no pain and 10 is the worst pain imaginable.
Jump test0 - 12 weeksCounter movement Jump and Triple hop for distance will be used to assess patellar tendinopathy caused functional deficits on the injured site compared with the non-injured site. The distance is measured in centimeters.
Single-leg decline squat (SLDS) test0 - 12 weeksA reliable patellar tendon pain provocation test, will be used to assess pain. Pain is rated on an 11-point numeric rating scale, where 0 is no pain and 10 is the worst pain imaginable.

Countries

Argentina

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026