Examining the link between flat feet, diaphragm function, balance, and foot pressure

Examination of Diaphragm Function, Postural Control, and Plantar Pressure in Individuals With Pes Planus

NA · Alanya Alaaddin Keykubat University · NCT06491212

This study is testing how flat feet might affect breathing, balance, and foot pressure compared to people with normal feet.

Quick facts

PhaseNA
Study typeInterventional
Enrollment34 (estimated)
Ages18 Years to 30 Years
SexAll
SponsorAlanya Alaaddin Keykubat University (other)
Locations1 site (Antalya, Alanya)
Trial IDNCT06491212 on ClinicalTrials.gov

What this trial studies

This study aims to compare diaphragm function, postural control, and plantar pressure between individuals with pes planus (flat feet) and healthy controls. It will assess diaphragm thickness and activity, as well as balance and foot function, using various measurement tools. The research seeks to understand how pes planus affects biomechanics and its potential impact on upper body posture and function. Participants will undergo specific tests to evaluate their foot deformity and overall physical capacity.

Who should consider this trial

Good fit: Ideal candidates are individuals aged 18-30 with pes planus deformity, as indicated by a navicular drop test value of 10mm or above.

Not a fit: Patients with rigid flatfoot, pes cavus, or other significant foot deformities, as well as those with chronic diseases affecting foot function, may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and management of pes planus and its effects on overall body mechanics.

How similar studies have performed: While the specific relationship between diaphragm function and pes planus is less explored, similar studies have shown the importance of foot biomechanics in overall posture and balance.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Inclusion criteria for individuals with Pes Planus Deformity

* Willing to participate in the study voluntarily
* Having a Navicular drop test value of 10mm or above
* Being between the ages of 18-30
* Having the physical capacity to perform assessments and tests
* Having a body mass index of 18-25 kg/m²

Exclusion Criteria:

* Exclusion criteria for individuals with Pes Planus Deformity:
* Termination of voluntariness
* Those with rigid flatfoot, pes cavus, hallux valgus, hallux rigidus, or calcaneal spur deformity
* Those with chronic systematic and metabolic diseases (e.g., diabetes mellitus, rheumatoid arthritis, etc.) and musculoskeletal problems (e.g., pes planus) that may affect foot functions and gait
* Those with any surgical history likely to affect balance, lower extremity strength, and postural control
* Those with any visual/vestibular, musculoskeletal, or neurological problems"

Inclusion criteria for healthy participants:

* Willing to participate in the study voluntarily
* Being between the ages of 18-30
* Having the physical capacity to perform assessments and tests
* Having a body mass index of 18-25 kg/m²
* Having the ideal height of the medial longitudinal arch of the foot (not having pes planus)

Exclusion criteria for healthy participants:

* Termination of voluntariness
* Those with chronic systematic and metabolic diseases (e.g., diabetes mellitus, rheumatoid arthritis, etc.) and musculoskeletal problems (e.g., pes planus) that may affect foot functions and gait
* Those with any surgical history likely to affect balance, lower extremity strength, and postural control
* Those with any visual/vestibular, musculoskeletal, or neurological problems"

Where this trial is running

Antalya, Alanya

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Pes Planus, Diaphragm Issues, Plantar Pressure, Postural Control

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.