Biomechanical PhenomenaNCT05454449
Effect of Dynamic Taping on Landing Biomechanics in Athletes With Symptoms of Patellar Tendinopathy
An observational study of Biomechanical Phenomena, run by National Yang Ming Chiao Tung University at 1 site in Taiwan.
Trial summary
Patellar tendinopathy (PT) is an overuse injury associated with loading activities, and popular among basketball and volleyball players. Although altered biomechanical characteristics during landing has been suggested as one of the risk factors for the development of PT, previous evidence failed to show the link… Read more about this study
- Who is it for?
- Ages 18 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Biomechanical Phenomena
- How many people
- 34 participants
- Where
- 1 siteTaiwan
- Study dates
- 13 Feb 2023to 15 May 2024
- Phase
- Observational
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: * 18 to 40 years old volleyball and basketball players * Volleyball and basketball players with more than 2 years' training experience * Volleyball and basketball players train over 90 minutes per week
Who may be able to join
- at the age of 18 to 40 years old
- volleyball and basketball players have more than 2 years training experience
- over 90 minutes of training time per week
- symptomatic group:
- having patellar tendon pain during loading task last for 3 months
- VISA-P questionnaire score ≦80
Show all 9Show fewer
- asymptomatic group:
- without any lower extremity pain(NRS3/10) in past 3 months
- VISA-P questionnaire score >80
Who cannot join
- Underwent sports physical therapy for knee pain in the past three months.
- Currently have any other chronic or acute lower limb injuries with a pain score >3/10.
- Self-reported pregnancy.
- Had surgery, fractures, or received steroid injections for the patellar tendon in the lower limbs.
- with a history of rheumatoid arthritis, systematic and neurological diseases
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effect of Dynamic Taping on Landing Biomechanical Characteristics in Volleyball and Basketball Players With Symptoms of Patellar Tendinopathy - Motor Control and Biomechanical Characteristics During the Landing Task
Patellar tendinopathy (PT) is an overuse injury associated with loading activities, and popular among basketball and volleyball players. Although altered biomechanical characteristics during landing has been suggested as one of the risk factors for the development of PT, previous evidence failed to show the link between the sagittal plane biomechanics of the hip and knee joint and PT; and little was known about the frontal and horizontal plane biomechanics in athletes with PT. While other factors such as motor control or muscle activation also have not been explored fully. The purpose of this study is to compare hip motor control and biomechanical characteristics of the hip and knee joint during landing in athletes with and without symptomatic PT.
Read the detailed description
Background: Patellar tendinopathy is an overuse injury associated with loading activities, and it is thought to be caused by repetitive force applied to the patellar tendon. Patellar tendinopathy is popular among basketball and volleyball players, particularly in men. Although altered biomechanical characteristics during landing has been suggested as one of the risk factors for the development of patellar tendinopathy, previous evidence failed to show the link between the sagittal plane biomechanics of the hip and knee joint and patellar tendinopathy; and little was known about the frontal and horizontal plane biomechanics in athletes with patellar tendinopathy. Among those factors contributing to the biomechanical characteristics, hip and quadriceps strength were shown linked with the presence of patellar tendinopathy, while other factors such as motor control or muscle activation have not been explored fully. The purpose of this study is to compare hip motor control and biomechanical characteristics of the hip and knee joint during landing in athletes with and without symptomatic patellar tendinopathy. The investigators hypothesize that the athletes with symptomatic patellar tendinopathy have poorer motor control and different landing biomechanics as compared with asymptomatic athletes.
Method: the investigators plan to recruit seventeen symptomatic patellar tendinopathy athletes for the experimental group, using demographic data (sex, age, height, weight, exercise type) of experimental group to match seventeen non-symptomatic athletes as control group. The assessment included hip motor control in various directions, and measurement of kinetics, kinematics and muscle activation during the step-down task, drop vertical jump and countermovement jump using the computer-aided video motion analysis system (Vicon) and the surface EMG (Noraxon). The group difference will be tested using t-test for the motor control ability and biomechanical characteristics. The significant level was set at 0.05.
- Conditions
- Biomechanical Phenomena
- Keywords
- patellar tendinopathy, volleyball, basketball, landing, biomechanics, EMG, muscle activation, kinetics, kinematics
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| symptomatic group | Individuals with patellar tendon pain last for 3 months Individuals age between 18-40 years old Individuals had trained in volleyball or basketball for more than two years Individuals still played volleyball or basketball for at least 90 minutes a week Victorian Institute of Sport Assessment (VISA) Questionnaire score ≦80 | |
| asymptomatic group | Individuals without any lower extremity pain(NRS>3/10) in past 3 months Individuals age between 18-40 years old Individuals had trained in volleyball or basketball for more than two years Individuals still played volleyball or basketball for at least 90 minutes a week Victorian Institute of Sport Assessment (VISA) Questionnaire score >80 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Hip Flexion Angles
Measure the hip joint angle when the knee reaches the maximum flexion angle during the landing phase of the countermovement jump
Measured: In the experiment, the maximum knee flexion during the landing phase of the countermovement jump
Maximal Knee Flexion Angle
In the countermovement jump test, the force received by the force plate changes from 0 to a positive value during the landing phase. Measure the maximal knee flexion angle during this phase.
Measured: The landing phase of the countermovement jump in the experiment
Hip Abduction Angle
Measure the hip abduction angle when the knee reaches the maximum flexion angle during the landing phase of the countermovement jump
Measured: In the experiment, the maximum knee flexion during the landing phase of the countermovement jump
Knee Joint Flexion Angle
Perform the step-down test on a 15 cm high table to measure the knee flexion angle of the foot on the table when the side foot is at the lowest point.
Measured: the contralateral foot is at its lowest point in step-down test in the experiment
Motor Control Ability
Having 4 motor control tests:
Hip Flexion Control: Maintain an upright posture in a single-leg small knee bend. The knee aligns with the 2nd toe in the sagittal plane and >5 cm beyond the toes.
Internal/External Rotation Control:Perform a single-leg small knee bend while rotating the pelvis and upper body toward the opposite/same side. Rotate 35°/30° without excessive L/E compensation.
Hip Adduction Control:Maintain a single-leg stance with symmetrical shoulders and pelvis. Pelvic lateral displacement <10 cm, left-right displacement difference <2 cm.
Scoring Criteria:
Avoid uncontrolled movements, perform isolated movements correctly, achieve adequate ROM, maintain normal breathing, control movements in eccentric/concentric phases, execute smoothly, stay relaxed and aware, ensure fluid transitions, avoid compensations, complete without feedback/support, and show no fatigue.
Total score range: 0-52, converted to a percentage for comparison(0-100%).
Measured: during the experiment, up to 4 hours
Secondary outcomes (2)
Maximum Muscle Activity of Biceps Femoris
Before the task, the subjects were asked to prone on the bed with their hips at 0 degrees and tested knee at 45 degrees of flexion, and to do isometric contractions with the utmost strength. The muscle contraction signals were recorded by EMG, and the average value of five measurements was taken as maximal voluntary contraction (MVC) of biceps femoris.
The countermovement jump test requires the participant to cross their arms over the chest, squat down, and then jump as high as possible before landing. The landing phase is identified when the ground reaction force recorded by the force plate transitions from zero to a positive value. Using a trigger, the force plate data is synchronized with EMG data to determine the peak activation of the biceps femoris muscle during the landing phase.
The biceps femoris contraction signals collected during the task were divided by the maximum biceps femoris contraction signal, and the results were standardized for comparison between individuals.
Measured: Immediately during the experiment
Muscle Activity of Biceps Femoris
Before the task, the subjects were asked to prone on the bed with their hips at 0 degrees and tested knee at 45 degrees of flexion, and to do isometric contractions with the utmost strength. The muscle contraction signals were recorded by EMG, and the average value of five measurements was taken as maximal voluntary contraction (MVC) of biceps femoris.
The countermovement jump test requires the participant to cross their arms over the chest, squat down, and then jump as high as possible before landing. The landing phase is identified when the GRF recorded by the force plate transitions from zero to a positive value. Using a trigger, the force plate data and kinematics data is synchronized with EMG data to determine the activation of the biceps femoris muscle during maximal knee flexion in the landing phase.
The signals collected during the task were divided by the maximum biceps femoris contraction signal, and the results were standardized for comparison between individuals.
Measured: Immediately during the experiment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jul 2022
- Study start13 Feb 2023
- Primary completion17 Jun 2023
- Study completion15 May 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Biomechanical PhenomenaStudies of the same condition, open and under way.
- More trials run by National Yang Ming Chiao Tung UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Enrolment
- 34 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Yang Ming Chiao Tung University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Yi-Fen Shih, National Yang Ming Chiao Tung University
- Investigators
- Yi-Fen Shih, Ph.D, Study director, Department of Physical Therapy and Assistive Technology, National Yang-Ming Chiao-Tung University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05454449
- Sponsor's protocol ID
- YM109067F(2)
- Status last verified
- Mar 2025
- First submitted
- 2 Jul 2022
- Last updated
- 9 Apr 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 Apr 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Dynamic Taping on Landing Biomechanical Characteristics in Volleyball and Basketball Players With Symptoms of Patellar Tendinopathy - Motor Control and Biomechanical Characteristics During the Landing Task
- ClinicalTrials.gov ID
- NCT05454449
- Acronym / sponsor ID
- YM109067F(2)
- Conditions
- Biomechanical Phenomena
- Keywords
- patellar tendinopathy, volleyball, basketball, landing, biomechanics, EMG, muscle activation, kinetics
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 34 participants (actual)
- Lead sponsor
- National Yang Ming Chiao Tung UniversityUniversity, hospital or other
- Study start
- 13 Feb 2023 (actual)
- Primary completion
- 17 Jun 2023 (actual)
- Study completion
- 15 May 2024 (actual)
- First posted
- 12 Jul 2022 (actual)
- Results
- Posted 9 Apr 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Patellar tendinopathy (PT) is an overuse injury associated with loading activities, and popular among basketball and volleyball players. Although altered biomechanical characteristics during landing has been suggested as one of the risk factors for the development of PT, previous evidence failed to show the link between the sagittal plane biomechanics of the hip and knee joint and PT; and little was known about the frontal and horizontal plane biomechanics in athletes with PT. While other factors such as motor control or muscle activation also have not been explored fully. The purpose of this study is to compare hip motor control and biomechanical characteristics of the hip and knee joint during landing in athletes with and without symptomatic PT.
Detailed description
Background: Patellar tendinopathy is an overuse injury associated with loading activities, and it is thought to be caused by repetitive force applied to the patellar tendon. Patellar tendinopathy is popular among basketball and volleyball players, particularly in men. Although altered biomechanical characteristics during landing has been suggested as one of the risk factors for the development of patellar tendinopathy, previous evidence failed to show the link between the sagittal plane biomechanics of the hip and knee joint and patellar tendinopathy; and little was known about the frontal and horizontal plane biomechanics in athletes with patellar tendinopathy. Among those factors contributing to the biomechanical characteristics, hip and quadriceps strength were shown linked with the presence of patellar tendinopathy, while other factors such as motor control or muscle activation have not been explored fully. The purpose of this study is to compare hip motor control and biomechanical characteristics of the hip and knee joint during landing in athletes with and without symptomatic patellar tendinopathy. The investigators hypothesize that the athletes with symptomatic patellar tendinopathy have poorer motor control and different landing biomechanics as compared with asymptomatic athletes.
Method: the investigators plan to recruit seventeen symptomatic patellar tendinopathy athletes for the experimental group, using demographic data (sex, age, height, weight, exercise type) of experimental group to match seventeen non-symptomatic athletes as control group. The assessment included hip motor control in various directions, and measurement of kinetics, kinematics and muscle activation during the step-down task, drop vertical jump and countermovement jump using the computer-aided video motion analysis system (Vicon) and the surface EMG (Noraxon). The group difference will be tested using t-test for the motor control ability and biomechanical characteristics. The significant level was set at 0.05.
Study design
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| symptomatic group | – | –Individuals with patellar tendon pain last for 3 months Individuals age between 18-40 years old Individuals had trained in volleyball or basketball for more than two years Individuals still played volleyball or basketball for at least 90 minutes a week Victorian Institute of Sport Assessment (VISA) Questionnaire score ≦80 |
| asymptomatic group | – | –Individuals without any lower extremity pain(NRS>3/10) in past 3 months Individuals age between 18-40 years old Individuals had trained in volleyball or basketball for more than two years Individuals still played volleyball or basketball for at least 90 minutes a week Victorian Institute of Sport Assessment (VISA) Questionnaire score >80 |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- * 18 to 40 years old volleyball and basketball players * Volleyball and basketball players with more than 2 years' training experience * Volleyball and basketball players train over 90 minutes per week
Key inclusion criteria (9 listed)
- at the age of 18 to 40 years old
- volleyball and basketball players have more than 2 years training experience
- over 90 minutes of training time per week
- having patellar tendon pain during loading task last for 3 months
- VISA-P questionnaire score ≦80
Key exclusion criteria (5 listed)
- Underwent sports physical therapy for knee pain in the past three months.
- Currently have any other chronic or acute lower limb injuries with a pain score >3/10.
- Self-reported pregnancy.
- Had surgery, fractures, or received steroid injections for the patellar tendon in the lower limbs.
- with a history of rheumatoid arthritis, systematic and neurological diseases
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Hip Flexion Angles
Time frame: In the experiment, the maximum knee flexion during the landing phase of the countermovement jump
Measure the hip joint angle when the knee reaches the maximum flexion angle during the landing phase of the countermovement jump
Maximal Knee Flexion Angle
Time frame: The landing phase of the countermovement jump in the experiment
In the countermovement jump test, the force received by the force plate changes from 0 to a positive value during the landing phase. Measure the maximal knee flexion angle during this phase.
Hip Abduction Angle
Time frame: In the experiment, the maximum knee flexion during the landing phase of the countermovement jump
Measure the hip abduction angle when the knee reaches the maximum flexion angle during the landing phase of the countermovement jump
Knee Joint Flexion Angle
Time frame: the contralateral foot is at its lowest point in step-down test in the experiment
Perform the step-down test on a 15 cm high table to measure the knee flexion angle of the foot on the table when the side foot is at the lowest point.
Motor Control Ability
Time frame: during the experiment, up to 4 hours
Having 4 motor control tests: Hip Flexion Control: Maintain an upright posture in a single-leg small knee bend. The knee aligns with the 2nd toe in the sagittal plane and >5 cm beyond the toes. Internal/External Rotation Control:Perform a single-leg small knee bend while rotating the pelvis and upper body toward the opposite/same side. Rotate 35°/30° without excessive L/E compensation. Hip Adduction Control:Maintain a single-leg stance with symmetrical shoulders and pelvis. Pelvic lateral displacement <10 cm, left-right displacement difference <2 cm. Scoring Criteria: Avoid uncontrolled movements, perform isolated movements correctly, achieve adequate ROM, maintain normal breathing, control movements in eccentric/concentric phases, execute smoothly, stay relaxed and aware, ensure fluid transitions, avoid compensations, complete without feedback/support, and show no fatigue. Total score range: 0-52, converted to a percentage for comparison(0-100%).
2 secondary outcomes
Maximum Muscle Activity of Biceps Femoris
Time frame: Immediately during the experiment
Muscle Activity of Biceps Femoris
Time frame: Immediately during the experiment
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Apr 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Related trials for Biomechanical Phenomena
Not yet recruiting
Accessible Remote Rehabilitation System for Real-Time Biomechanical Monitoring
Hand Injury Rehabilitation, Postoperative Rehabilitation
Not yet recruiting
Stair Biomechanics and Vibration Study After ACLR
Anterior Cruciate Ligament Reconstruction (ACLR), Anterior Cruciate Ligament Injury
Recruiting
Effects of Virtual Reality Environments on Walking in Adults With and Without Knee Osteoarthritis
Knee Osteoarthritis
Not yet recruiting
Effects of Virtual Reality-Based Optokinetic Stimulation Added to Neuromuscular Training in Basketball Players
Visual Dependence, Postural Control
Not yet recruitingObservational study
Corneal Biomechanics and Stromal Tissue Characteristics in Patients Undergoing SMILE
Myopia
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Yi-Fen Shih, Ph.D study director
Department of Physical Therapy and Assistive Technology, National Yang-Ming Chiao-Tung University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Biomechanical Phenomena, run by National Yang Ming Chiao Tung University at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 9 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 9 Apr 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Hip Flexion Angles (time frame: In the experiment, the maximum knee flexion during the landing phase of the countermovement jump). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Apr 2025.