Foot Positions Affect Basketball Players With Flatfoot

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

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

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.

What is being measured

The primary outcome is the main question the study is designed to answer.

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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.

1. First posted29 Apr 2025
2. Study start1 Sep 2023
3. Primary completion30 Apr 2024
4. 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.