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RecruitingNCT07926659Updated Nov 9, 2026

NAVICULAR DROP AND LOWER EXTREMITY BIOMECHANICS

An interventional study of Standard Exercise Program and Ankle Strengthening Exercise Program in Pes Planus, sponsored by Gaziantep Islam Science and Technology University. Recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-09.

Sponsored by Gaziantep Islam Science and Technology University · Not applicable, Interventional, and Treatment

Updated Nov 9, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
12
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to examine the effects of an exercise program on lower extremity biomechanics in individuals with pes planus. Participants who meet the inclusion criteria and are assessed using the Navicular Drop Test will be divided into two groups: a control group and an experimental group. The control group will perform short-foot exercises, towel-curl exercises, and stretching exercises. In addition to these, the experimental group will perform ankle-strengthening exercises using elastic bands. All exercises will be conducted 3 days a week for 4 weeks, consisting of 3 sets of 10 repetitions each. The lower extremity biomechanical alignment and functional status of the participants will be evaluated before and after the 4-week intervention using the Navicular Drop Test, Q-angle measurement, and pelvic inclination angle measurement.

02

Conditions studied

  • Pes Planus

Keywords

  • Navicular Drop
  • Short Foot Exercise
  • Lower Extremity Biomechanics
  • Pes Planus
  • Exercise
03

In context

Flatfoot

173 studies on the registry are indexed under Flatfoot; 44 are open to participants now.

This study's planned enrollment of 12 is below the median of 40 across 122 interventional studies indexed under Flatfoot.

Browse Flatfoot studies →

Lead sponsor

Gaziantep Islam Science and Technology University is the lead sponsor of 43 studies on the registry; 10 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Being willing to participate in the study
  • Aged 18 years and older
  • Having pes planus, defined as a navicular drop test result greater than 10 mm

Exclusion criteria

Exclusion Criteria:

  • Having undergone hip, knee, or ankle surgery within the past year
  • Having any lower extremity pathology
  • Engaging in specific lower extremity exercises or specialized sports activities
  • Using any shoe modifications for pes planus
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
12 participants (estimated)

Study arms

  • Experimental
    Control Group

    Participants will receive a standard exercise program aimed at improving foot posture and arch support.

    Other: Standard Exercise Program

  • Active comparator
    Experimental Group

    Participants will receive the standard exercise program combined with targeted ankle strengthening exercises to enhance lower extremity biomechanics.

    Other: Standard Exercise Program · Other: Ankle Strengthening Exercise Program

Interventions

  • OtherStandard Exercise Program

    Participants in the control group will perform short foot exercises, towel curl exercises, and lower extremity stretching exercises. The protocol will be administered 3 days a week for 4 weeks, with each exercise performed in 3 sets of 10 repetitions.

  • OtherAnkle Strengthening Exercise Program

    Participants in the experimental group will perform ankle strengthening exercises using elastic resistance bands, administered 3 days a week for 4 weeks with 3 sets of 10 repetitions.

06

What researchers measure

Primary outcomes

  1. Navicular Drop Test

    Measurement of the change in navicular height from sitting to standing position to evaluate medial longitudinal arch mobility and pronation in millimeters.

    Time frame: Baseline and 4 weeks

  2. Q Angle

    Measurement of the angle formed by a line from the anterior superior iliac spine to the central point of the patella and another line from the central point of the patella to the tibial tuberosity in degrees.

    Time frame: Baseline and 4 weeks

  3. Pelvic Inclination Angle

    Measurement of pelvic alignment using an inclinometer to evaluate the angle between the horizontal plane and the line connecting the anterior superior iliac spine and posterior superior iliac spine in degrees.

    Time frame: Baseline and 4 weeks

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Nov 2026; primary completion for Dec 2026, 1 month later.

Of 89 non-industry interventional studies with no phase under Flatfoot, half reached primary completion within 7 months of starting (the median), counting those still running; a quarter within 2 and three quarters within 15. This study's planned 1 month is below that.

Counting every sponsor, half of 89 studies reached it within 7 months; a quarter within 2 and three quarters within 15.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 4, 2026
First posted
Nov 9, 2026
StartEst.
Nov 5, 2026
Primary completionEst.
Dec 5, 2026
CompletionEst.
Dec 25, 2026
Last update
Nov 9, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Registered
First appeared on the registry. No changes since
Nov 9, 2026
Show all 1 update
  1. Nov 9, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07926659
Lead sponsor
Gaziantep Islam Science and Technology University
Responsible party
Gönül Elpeze (Assistant Proffessor, Gaziantep Islam Science and Technology University) — Principal investigator
First posted
Nov 9, 2026
Start date
Nov 5, 2026 (estimated)
Primary completion
Dec 5, 2026 (estimated)
Completion
Dec 25, 2026 (estimated)
Last update
Nov 9, 2026

Study contacts

Gönül ELPEZE, Assistant Professor
Contact
gonul.elpeze@gibtu.edu.tr
+90 342 909 75 00

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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