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Completed

NCT Number: NCT06948812

Foot Positions Affect Basketball Players With Flatfoot

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.

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Key information

Conditions

Balance Congenital Abnormalities Congenital, Hereditary, and Neonatal Diseases and Abnormalities EMG Flatfoot Foot Deformities Foot Deformities, Acquired Foot Deformities, Congenital Jumping Performance Limb Deformities, Congenital Lower Extremity Deformities, Congenital Musculoskeletal Abnormalities Musculoskeletal Diseases Proprioception Talipes

Age range

18 year–24 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Nahda University

Banī Suwayf, Beni Suweif Governorate, Egypt

About this study

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)

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • The presence of flatfoot in the dominant leg.
  • The presence of chonic ankle instability

Exclusion criteria

  • 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

Treatment and study plan

Primary outcomes

  1. 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).

  2. 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.)

  3. 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).

  4. 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.

  5. 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.

  6. 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.

Sponsors and collaborators

Lead sponsor

Beni-Suef University

Other

Registry information

Official study 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

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Apr 29, 2025
Registry last updated
Apr 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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