Foot Positions Affect Basketball Players With Flatfoot

Completed

• Conditions: Jumping Performance; EMG; Balance; Proprioception

• Registration Number: NCT06948812
• Lead Sponsor: Beni-Suef University

Brief 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.

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 Timeline

• Study Start: 2023-09-01
• Primary Completion: 2024-04-30
• Study Completion: 2024-04-30
• Status Verified: 2025-04
• Study First Submitted: 2025-04-15
• Study First Submitted QC: 2025-04-28
• Last Update Submitted: 2025-04-28
• Study First Posted: 2025-04-29
• Last Update Posted: 2025-04-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 84

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

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Knee proprioception with repositioning error test	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	3 months	This test will assess the ability of the participant to reproduce previously performed ankle positions (15° dorsiflexion and 15° plantar flexion.)
Vertical jump height with vertical jump tester	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.
Static balance with The Y-Balance test	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	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.
Electromyographical activity (EMG) during one-leg standing	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.

Trial Locations

Locations (1)

Nahda University; 🇪🇬 Banī Suwayf, Beni Suef, Egypt