Effects of Fatigue and Foot Orthoses on Lower Extremity EMG and Biomechanics for Individuals With Flat Foot

National Yang Ming Chiao Tung University19 enrolled

Overview

Determine the effects of non-custom made foot orthoses on the kinematics, muscle activity and joint contact force after fatigue and compare the rate of fatigue in flexible flat foot with and without foot orthoses

Study Type

OBSERVATIONAL

Enrollment

Conditions

Flexible Flatfoot

Interventions

Non-custom made foot orthosesDEVICE

Foot orthoses is an orthotic devices which are used to support arch and rear-foot and put it in a good alignment.

Eligibility

Sex: ALLMin age: 20 YearsMax age: 50 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Bilateral flexible flatfoot( navicular bone drop greater than 10 mm) Exclusion Criteria: * History of foot and ankle surgery, inflammatory joint disease * History of lower extremity injury in six months * Known pathological or neurological disorders that could affect gait pattern

Locations (1)

National Yang-Ming University

Taipei, Taiwan

Outcomes

Primary Outcomes

Lower extremities kinetic

Three dimensional motion data were collected using a Vicon camera system during walking. Using motion capture system data to calculate the hip, knee internal/external rotation moment and ankle inversion/eversion moment via inverse dynamics method.

Time frame: 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed

Peak and average amplitude during stance phase

EMG data were collected using a Delsys, and Biopac EMG system during walking. Tibialis anterior/Peroneal longus/Abductor hallucis longus muscle activity were measured by electromyography (EMG).

Time frame: 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed

Lower extremities kinematic

Lower limbs alignment, including hip, knee and ankle joints. Using motion capture system data to calculate the joint angles.

Time frame: 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed

Secondary Outcomes

Lower extremities kinematic

Three dimensional kinematics were collected using a Vicon camera system during walking. Lower limbs alignment, including hip, knee and ankle joints. Using motion capture system data to calculate the joint angles.

Time frame: 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed

Peak and average amplitude during stance phase

EMG data were collected using a Delsys, and Biopac EMG system during walking. Medial gastrocnemius/Rectus femoris/Bicep femoris muscle activity were measured by EMG.

Data from ClinicalTrials.gov

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