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Completed

NCT Number: NCT07200843

Comparison of Lower Extremity Biomechanics and Postural Stability in Individuals With Pes Planus

The goal of this observational study is to examine the relationship between plantar flexor endurance and postural and tibial sway in adults (≥18 years) with pes planus (flatfoot). The main questions it aims to answer are:

Is there a correlation between plantar flexor endurance, postural sway and tibial sway during single-leg stance?

Participants will:

Perform a heel rise test to assess plantar flexor endurance

Stand on one leg while wearing a motion sensor to measure postural and tibial sway

Complete the tests under both eyes-open and eyes-closed conditions

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Key information

Conditions

Pes Planus Congenital Abnormalities Congenital, Hereditary, and Neonatal Diseases and Abnormalities Flatfoot Foot Deformities Foot Deformities, Acquired Foot Deformities, Congenital Limb Deformities, Congenital Lower Extremity Deformities, Congenital Musculoskeletal Abnormalities Musculoskeletal Diseases Talipes

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Ankara Yıldırım Beyazıt University, Department of Physiotherapy and Rehabilitation

Ankara, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Participants aged 18 years and older
  • A navicular drop test result of at least 10 mm

Exclusion criteria

  • Individuals with chronic diseases, hearing or vision impairments, orthopedic injuries or surgical history, and leg length discrepancy

Treatment and study plan

Heel rise test and postural/tibial sway measurement

Other

Participants undergo a heel rise test to assess plantar flexor muscle endurance. Postural and tibial sway are measured during single-leg stance using a wearable sensor under eyes-open and eyes-closed conditions. No therapeutic intervention is applied.

Primary outcomes

  1. Plantar flexor endurance measured by heel rise test

    Time frame: Measured once at baseline during the study visit.

    The number of repetitions participants can perform during the heel rise test, assessing the endurance of the plantar flexor muscles. Participants stood on one leg and raised their heels in time with a metronome set at 40 beats per minute. The test ended when the participant was fatigued or unable to continue, and the number of heel rises completed was recorded. The test was performed on both lower limbs.

Secondary outcomes

  1. Postural sway during single-leg stance

    Time frame: Measured once at baseline during the study visit.

    Postural sway was assessed using the Alda Balance Gear wearable sensor. Sensor was assessed for medio-lateral (ML) and antero-posterior (AP) sway. The sensor was placed at the L3-L5 vertebral level using a belt device. Participants performed a single-leg stance for up to 30 seconds under eyes-open (EO) and eyes-closed (EC) conditions. The test ended if balance was lost and the foot touched the ground. Postural sway was recorded only on the dominant limb.

  2. Tibial sway during single-leg stance

    Time frame: Measured once at baseline during the study visit.

    Tibial sway was assessed using the Alda Balance Gear wearable sensor. Sensor was assessed AP and ML sway. The sensor was placed one-third distal on the lower leg. Participants performed a single-leg stance for up to 30 seconds under eyes-open (EO) and eyes-closed (EC) conditions. The test ended if balance was lost and the foot touched the ground. Tibial sway was measured on both lower limbs.

Sponsors and collaborators

Lead sponsor

sevilay seda bas

Other

Registry information

Official study title

An Investigation of Heel Rise Test, Postural and Tibial Sway During Single-Leg Stance in Pes Planus

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Oct 1, 2025
Registry last updated
Oct 1, 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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