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

Completed

• Conditions: Flexible Flatfoot
• Interventions: Device: Non-custom made foot orthoses

• Registration Number: NCT03842241
• Lead Sponsor: National Yang Ming Chiao Tung University

Brief Summary

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

Detailed Description

Not available

Study Timeline

• Study Start: 2018-12-05
• Study First Submitted: 2019-01-17
• Status Verified: 2019-02
• Study First Submitted QC: 2019-02-12
• Study First Posted: 2019-02-15
• Primary Completion: 2019-08-31
• Study Completion: 2019-08-31
• Last Update Submitted: 2022-08-14
• Last Update Posted: 2022-08-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 19

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

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
WIth foot orthoses	Non-custom made foot orthoses	Device: Non-custom made foot orthoses

Primary Outcome Measures

Name	Time	Method
Lower extremities kinetic	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	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.
Lower extremities kinematic	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 limbs alignment, including hip, knee and ankle joints. Using motion capture system data to calculate the joint angles.
Peak and average amplitude during stance phase	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	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).

Secondary Outcome Measures

Name	Time	Method
Peak and average amplitude during stance phase	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	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.
Time of completed fatigue protocols	1 minutes after fatigue protocol completed	Time of completed the course will be recorded.
Inter-joint contact force	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	Hip, knee ,and ankle inter-joint contact force: Anybody modeling system is used to model the inter-joint contact force
Lower extremities kinetic	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	Three dimensional motion data were collected using a Vicon camera system during walking.; Using motion capture system data to calculate the hip, knee flexion/extension, adduction/abduction moment and ankle dorsiflexion/plantarflexion, and adduction/abduction moment via inverse dynamics method.
Lower extremities kinematic	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	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.

Trial Locations

Locations (1)

National Yang-Ming University; 🇨🇳 Taipei, Taiwan