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Peripheral Magnetic Stimulation of Foot Muscles: Effects on Medial Longitudinal Arch Height and Foot Muscle Strength in Adults With Flat Feet

NCT07237321 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2025-11-25

No results posted yet for this study

Summary

This study examines the effects of repetitive peripheral magnetic stimulation (rPMS) on foot invertor muscle strength, morphology, and the height of the medial longitudinal arch (MLA) in individuals with flat feet. The rPMS will be applied non-invasively to the extrinsic and intrinsic foot muscles three times per week for twelve weeks. The experimental group will receive rPMS targeting the invertor muscles of the foot, while the control group will not receive stimulation but will follow the same measurement schedule.

Assessments will be performed at baseline, after 6 weeks, and after 12 weeks of intervention. The primary outcome will be the change in the height of the MLA, evaluated using dynamic navicular drop assessment during gait. Secondary outcomes will include changes in the isometric inversion torque of the foot invertors and morphological adaptations of the tibialis posterior muscle assessed by ultrasound imaging.

This study seeks to determine whether rPMS can improve the height of the MLA, foot invertor muscle strength and structural stability in adults with flat feet. The findings may contribute to developing new, non-invasive therapeutic approaches for improving foot function and preventing musculoskeletal imbalances related to flat foot deformity.

Conditions

  • Pes Planus
  • Flatfoot
  • Posterior Tibial Tendon Dysfunction

Interventions

DEVICE

Repetitive Peripheral Magnetic Stimulation (rPMS)

Repetitive peripheral magnetic stimulation (rPMS) will be applied to the foot invertor muscles three times per week for 12 weeks. Stimulation will target the upper third of the anteromedial side of the shin, near the tibia, using an oval magnetic coil. To ensure correct coil placement, visible muscle contraction and ankle inversion will be monitored. Intrinsic foot muscles will be simultaneously stimulated using a foot stimulator, with the nondominant foot positioned on the stimulation platform. Participants will perform isometric inversion contractions during rPMS to enhance neuromuscular activation and short-foot exercises to engage local foot stabilizers.

Sponsors & Collaborators

  • University of Ljubljana, Faculty of Medicine

    collaborator OTHER

  • University of Ljubljana

    lead OTHER

Principal Investigators

  • Rok Bavdek, PhD

  • Nejc Umek, MD PhD · Institute of Anatomy, Faculty of Medicine, University of Ljubljana

  • Jure Jelenc, PhD · Iskra Medical, d.o.o.

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-12-15
Primary Completion
2026-12-31
Completion
2027-12-31

Countries

  • Slovenia

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07237321 on ClinicalTrials.gov