BalanceNCT06948812
Foot Positions Affect Basketball Players With Flatfoot
An observational study of Balance and Proprioception, run by Beni-Suef University at 1 site in Egypt.
Trial summary
This study investigated the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF. Read more about this study
- Who is it for?
- Ages 18 to 24 years
- Conditions the study is for
- Balance, Proprioception, Jumping Performance
- How many people
- 84 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Sep 2023to 30 Apr 2024
- Phase
- Observational
- 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 24 years
- All sexes
- No healthy volunteers
- Adult
Study population: Basketball players with chronic ankle instability
Who may be able to join
- The presence of flatfoot in the dominant leg.
- The presence of chonic ankle instability
Who cannot join
- The exclusion criteria were the existence of limited hallux dorsiflexion
- previous hip, pelvis, knee, or foot surgeries within the last year; obesity or pregnancy; leg-length discrepancies;
- Had any vestibular disorder neurological disorder, brain concussion within the last 3 months that may cause balance impairment; or administering any drugs that could disturb alertness or balance
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effect of Various Initial Foot Positions on Proprioception, Balance, Jump, and Electromyographical Muscle Activity in Basketball Players With Flatfoot and Chronic Ankle Instability: A Cross-sectional Study
This study investigated the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF.
Read the detailed description
Objective: To investigate the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF.
Methods: Eighty-four basketball players with chronic ankle instability were distributed to three groups (28 with flexible FF, 28 with rigid FF, and 28 without FF). The outcome measures will include static and dynamic balance, knee and ankle proprioception, vertical jump, and electromyography (EMG) of ankle muscles (including gastrocnemius (GE), soleus (SOL), tibialis anterior (TA), and peroneus longus (PL) muscles)
- Conditions
- Balance, Proprioception, Jumping Performance, EMG
- Keywords
- basket ball players, balance, flatfoot, electromyography, propioception
- Medical subject headings
- Flatfoot
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 |
|---|---|---|
| flexible FF | 28 basketball player with flexible flatfoot and chronic ankle instability | |
| Rigid FF | 28 basketball player with rigid flatfoot and chronic ankle instability | |
| Control | 28 basketball player without flatfoot but chronic ankle instability |
What is being measured
The primary outcome is the main question the study is designed to answer.
Knee proprioception with repositioning error test
The knee proprioception will be measured using the repositioning error test on the dominant leg to measure the absolute angular error. This test will assess the ability of the participant to reproduce a previously performed position (45 and 15 degrees of knee flexion).
Measured: 3 months
Ankle proprioception with angular error measurement test
This test will assess the ability of the participant to reproduce previously performed ankle positions (15° dorsiflexion and 15° plantar flexion.)
Measured: 3 months
Static balance with The Y-Balance test
The Y-Balance test will be used to evaluate static balance 27. The test will assess the ability of the participant to maintain balance while reaching as far as possible in all three directions (anterior (A), posteromedial (PM), and posterolateral (PL) directions).
Measured: 3 months
Dynamic balance with Biodex Balance device
In this study, dynamic balance will be measured by the Biodex Balance System (Biodex 945-302, Biodex Medical Systems Inc., New York, USA). The Biodex Balance System has been demonstrated to be a reliable and validated instrument to assess dynamic balance. The biodex will assess the anteroposterior and lateral stability.
Measured: 3 months
Vertical jump height with vertical jump tester
A vertical jump tester (Sports Imports, Columbus, OH)32 will be utilized to evaluate the vertical jump height in cm of each participant. The achieved height distance in cm in each step will be recorded, and the maximum height will be used in the statistical analysis.
Measured: 3 months
Electromyographical activity (EMG) during one-leg standing
A wireless surface EMG system will record electromyographical signals (EMG) of ankle muscles, including gastrocnemius (GE), soleus (SOL), tibialis anterior (TA), and peroneus longus (PL) muscles.
Measured: 3 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Apr 2025
- Study start1 Sep 2023
- Primary completion30 Apr 2024
- Study completion30 Apr 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for BalanceStudies 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
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 84 participants (actual)
Sponsor and investigators
- Lead sponsor
- Beni-Suef University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ayman Mohamed, Beni-Suef University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06948812
- Sponsor's protocol ID
- BNS2
- Status last verified
- Apr 2025
- First submitted
- 15 Apr 2025
- Last updated
- 29 Apr 2025
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 29 Apr 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Various Initial Foot Positions on Proprioception, Balance, Jump, and Electromyographical Muscle Activity in Basketball Players With Flatfoot and Chronic Ankle Instability: A Cross-sectional Study
- ClinicalTrials.gov ID
- NCT06948812
- Acronym / sponsor ID
- BNS2
- Conditions
- Balance, Proprioception, Jumping Performance, EMG
- Keywords
- basket ball players, balance, flatfoot, electromyography, propioception
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 84 participants (actual)
- Lead sponsor
- Beni-Suef UniversityUniversity, hospital or other
- Study start
- 1 Sep 2023 (actual)
- Primary completion
- 30 Apr 2024 (actual)
- Study completion
- 30 Apr 2024 (actual)
- First posted
- 29 Apr 2025 (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.
This study investigated the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF.
Detailed description
Objective: To investigate the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF.
Methods: Eighty-four basketball players with chronic ankle instability were distributed to three groups (28 with flexible FF, 28 with rigid FF, and 28 without FF). The outcome measures will include static and dynamic balance, knee and ankle proprioception, vertical jump, and electromyography (EMG) of ankle muscles (including gastrocnemius (GE), soleus (SOL), tibialis anterior (TA), and peroneus longus (PL) muscles)
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| flexible FF | – | –28 basketball player with flexible flatfoot and chronic ankle instability |
| Rigid FF | – | –28 basketball player with rigid flatfoot and chronic ankle instability |
| Control | – | –28 basketball player without flatfoot but chronic ankle instability |
Who may qualify
- Ages
- 18 to 24 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- Basketball players with chronic ankle instability
Key inclusion criteria (2 listed)
- The presence of flatfoot in the dominant leg.
- The presence of chonic ankle instability
Key exclusion criteria (3 listed)
- The exclusion criteria were the existence of limited hallux dorsiflexion
- previous hip, pelvis, knee, or foot surgeries within the last year; obesity or pregnancy; leg-length discrepancies;
- Had any vestibular disorder neurological disorder, brain concussion within the last 3 months that may cause balance impairment; or administering any drugs that could disturb alertness or balance
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
Knee proprioception with repositioning error test
Time frame: 3 months
The knee proprioception will be measured using the repositioning error test on the dominant leg to measure the absolute angular error. This test will assess the ability of the participant to reproduce a previously performed position (45 and 15 degrees of knee flexion).
Ankle proprioception with angular error measurement test
Time frame: 3 months
This test will assess the ability of the participant to reproduce previously performed ankle positions (15° dorsiflexion and 15° plantar flexion.)
Static balance with The Y-Balance test
Time frame: 3 months
The Y-Balance test will be used to evaluate static balance 27. The test will assess the ability of the participant to maintain balance while reaching as far as possible in all three directions (anterior (A), posteromedial (PM), and posterolateral (PL) directions).
Dynamic balance with Biodex Balance device
Time frame: 3 months
In this study, dynamic balance will be measured by the Biodex Balance System (Biodex 945-302, Biodex Medical Systems Inc., New York, USA). The Biodex Balance System has been demonstrated to be a reliable and validated instrument to assess dynamic balance. The biodex will assess the anteroposterior and lateral stability.
Vertical jump height with vertical jump tester
Time frame: 3 months
A vertical jump tester (Sports Imports, Columbus, OH)32 will be utilized to evaluate the vertical jump height in cm of each participant. The achieved height distance in cm in each step will be recorded, and the maximum height will be used in the statistical analysis.
Electromyographical activity (EMG) during one-leg standing
Time frame: 3 months
A wireless surface EMG system will record electromyographical signals (EMG) of ankle muscles, including gastrocnemius (GE), soleus (SOL), tibialis anterior (TA), and peroneus longus (PL) muscles.
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 29 Apr 2025.
- Individual participant dataSharing planned: Undecided
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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?
An observational study of Balance and Proprioception, run by Beni-Suef University at 1 site in Egypt.
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 2 inclusion and 3 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 29 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 Egypt. 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?
Knee proprioception with repositioning error test (time frame: 3 months). The study lists 6 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 29 Apr 2025.