HealthyNCT06691373
Acute Effects of Static Stretching on the Knee Joint Position Sense of Soccer Players
A study testing Static Stretching in people with Healthy, run by University Fernando Pessoa at 1 site in Portugal.
Trial summary
The aim of this study was to investigate the acute effects of static stretching on the knee joint-position sense of soccer players. Read more about this study
- Who is it for?
- Ages 18 to 30 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- Static Stretching
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 17 participants
- Where
- 1 sitePortugal
- Study dates
- 2 May 2023to 31 Jul 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 30 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- male soccer players
- aged between 18 and 30 years old
- with normal knee range of motion
- without history of lower limb injuries in the last 6 months
Who cannot join
- history of knee surgery
- with cardiorespiratory, neurological or vestibular diseases
- with positive knee integrity tests (anterior drawer, posterior drawer, Lachman test and valgus and varus stress tests)
- using drugs that could affect the central nervous system, balance, or motor control (sedatives, anxiolytics, analgesics, NSAIDs, muscle relaxants, or antibiotics).
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Acute Effects of Static Stretching on the Knee Joint Position Sense of Soccer Players: a Crossover Randomized Controlled Trial
The aim of this study was to investigate the acute effects of static stretching on the knee joint-position sense of soccer players.
Read the detailed description
This crossover randomized controlled trial included male soccer players. All participants performed 3 conditions: two experimental conditions, of static stretching of the quadriceps and hamstrings muscles, for 30 or 90 seconds; and a control condition (rest). Knee joint-position sense of the dominant limb was assessed before and immediately after the conditions for the range of 45º of knee flexion by active repositioning, using a video camera. Absolute, relative and variable angular errors were calculated.
- Conditions
- Healthy
- Being tested
- Static Stretching
- Keywords
- Static Stretching, Joint Position Sense, Proprioception, Knee, Soccer
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Static StretchingOther
Static stretching of the quadriceps and hamstrings which was performed in the dominant limb, and held in a position where the participants referred discomfort:
- Quadriceps - participants were in the standing position, with one hand holding the back of a chair to maintain the balance, and were instructed to pull the ankle of the lower limb to be stretched, pressing the heel towards the buttocks and, at the same time, extending the thigh;
- Hamstrings - participants were also in the standing position, with the heel resting on a chair. They were then instructed to lean the body forward keeping the spine erect and the pelvis in anteversion, to obtain a stretch over the knee and hip.
| Study group | Role | What they receive |
|---|---|---|
| Control Condition | No intervention | 5-minute rest |
| Static Stretching of 30 seconds | Active comparator | Static stretching of the quadriceps and hamstrings for 30 seconds Receives: Other: Static Stretching |
| Static Stretching of 90 seconds | Active comparator | Static stretching of the quadriceps and hamstrings for 90 seconds Receives: Other: Static Stretching |
What is being measured
The primary outcome is the main question the study is designed to answer.
Absolute angular error
The absolute value of the difference between the target range and the achieved range
Measured: Change from Baseline (Pre) to Immediately after interventions or control (Post)
Relative angular error
The arithmetic difference between the target range and the range achieved
Measured: Change from Baseline (Pre) to Immediately after interventions or control (Post)
Variable angular error
The standard deviation of the 3 repositionings
Measured: Change from Baseline (Pre) to Immediately after interventions or control (Post)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Nov 2024
- Study start2 May 2023
- Primary completion28 Jul 2023
- Study completion31 Jul 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for HealthyStudies of the same condition, open and under way.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 17 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Fernando Pessoa
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06691373
- Sponsor's protocol ID
- ESS/FSA - 391/23-3
- Status last verified
- Nov 2024
- First submitted
- 13 Nov 2024
- Last updated
- 15 Nov 2024
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Azevedo J, Teixeira M, Moreira-Silva I, Cardoso R, Seixas A. Acute effects of static stretching on the knee joint position sense of soccer players: A crossover randomized controlled trial. J Bodyw Mov Ther. 2025 Jun;42:567-572. doi: 10.1016/j.jbmt.2025.01.033. Epub 2025 Jan 25.
PubMed 40325724
Study at a glance
From the registry record, last updated by the sponsor on 15 Nov 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Acute Effects of Static Stretching on the Knee Joint Position Sense of Soccer Players: a Crossover Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT06691373
- Acronym / sponsor ID
- ESS/FSA - 391/23-3
- Conditions
- Healthy
- Keywords
- Static Stretching, Joint Position Sense, Proprioception, Knee, Soccer
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 17 participants (actual)
- Lead sponsor
- University Fernando PessoaUniversity, hospital or other
- Study start
- 2 May 2023 (actual)
- Primary completion
- 28 Jul 2023 (actual)
- Study completion
- 31 Jul 2023 (actual)
- First posted
- 15 Nov 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this study was to investigate the acute effects of static stretching on the knee joint-position sense of soccer players.
Detailed description
This crossover randomized controlled trial included male soccer players. All participants performed 3 conditions: two experimental conditions, of static stretching of the quadriceps and hamstrings muscles, for 30 or 90 seconds; and a control condition (rest). Knee joint-position sense of the dominant limb was assessed before and immediately after the conditions for the range of 45º of knee flexion by active repositioning, using a video camera. Absolute, relative and variable angular errors were calculated.
Study design
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Control Condition | No intervention | –5-minute rest |
| Static Stretching of 30 seconds | Active comparator | Other: Static StretchingStatic stretching of the quadriceps and hamstrings for 30 seconds |
| Static Stretching of 90 seconds | Active comparator | Other: Static StretchingStatic stretching of the quadriceps and hamstrings for 90 seconds |
Who may qualify
- Ages
- 18 to 30 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- male soccer players
- aged between 18 and 30 years old
- with normal knee range of motion
- without history of lower limb injuries in the last 6 months
Key exclusion criteria (4 listed)
- history of knee surgery
- with cardiorespiratory, neurological or vestibular diseases
- with positive knee integrity tests (anterior drawer, posterior drawer, Lachman test and valgus and varus stress tests)
- using drugs that could affect the central nervous system, balance, or motor control (sedatives, anxiolytics, analgesics, NSAIDs, muscle relaxants, or antibiotics).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Static StretchingStatic stretching of the quadriceps and hamstrings which was performed in the dominant limb, and held in a position where the participants referred discomfort: * Quadriceps - participants were in the standing position, with one hand holding the back of a chair to maintain the balance, and were instructed to pull the ankle of the lower limb to be stretched, pressing the heel towards the buttocks and, at the same time, extending the thigh; * Hamstrings - participants were also in the standing position, with the heel resting on a chair. They were then instructed to lean the body forward keeping the spine erect and the pelvis in anteversion, to obtain a stretch over the knee and hip. | Other | Static Stretching of 30 seconds, Static Stretching of 90 seconds |
Primary outcome
Absolute angular error
Time frame: Change from Baseline (Pre) to Immediately after interventions or control (Post)
The absolute value of the difference between the target range and the achieved range
Relative angular error
Time frame: Change from Baseline (Pre) to Immediately after interventions or control (Post)
The arithmetic difference between the target range and the range achieved
Variable angular error
Time frame: Change from Baseline (Pre) to Immediately after interventions or control (Post)
The standard deviation of the 3 repositionings
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Nov 2024.
- Derived from this study: PubMed 40325724Azevedo J, Teixeira M, Moreira-Silva I, Cardoso R, Seixas A. Acute effects of static stretching on the knee joint position sense of soccer players: A crossover randomized controlled trial. J Bodyw Mov Ther. 2025 Jun;42:567-572. doi: 10.1016/j.jbmt.2025.01.033. Epub 2025 Jan 25.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Static Stretching in people with Healthy, run by University Fernando Pessoa at 1 site in Portugal.
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 4 inclusion and 4 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 15 Nov 2024. 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 Portugal. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Absolute angular error (time frame: Change from Baseline (Pre) to Immediately after interventions or control (Post)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06691373, which also lists 1 linked publication.
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 15 Nov 2024.