Neuromuscular Study to Assess Foot Intrinsic Muscles

Neuromuscular Assessments of Foot Intrinsic Muscles: (1) Between Individuals With and Without Functional Flatfoot and (2) Before and After a 3-week Short Foot Exercise Training in Individuals With Functional Flatfoot

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03154853

Enrollment

Registered

2017-05-16

Start date

2016-11-04

Completion date

2017-12-30

Last updated

2017-05-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Flexible Flatfoot

Keywords

Electromyography,Excessive Foot Pronation,exercise,neurology,physical therapy

Brief summary

The purposes of these studies are to investigate: Differences in abductor hallucis muscles'EMG activities during different postural tasks between individuals with normal foot alignment and functional flat foot. Differences in abductor hallucis muscles'H-reflex amplitudes between individuals with normal foot alignment and functional flat foot. Changes in abductor hallucis muscles'EMG activities during different postural tasks after a 3-week short foot exercises training regimen in individuals with functional flat foot. Changes in abductor hallucis muscles'H-reflex amplitudes after a 3-week short foot exercises training regimen in individuals with functional flat foot. hypotheses: Peak-to-peak amplitudes and ratios of abductor hallucis muscles and tibialis anterior muscles during different postural tasks were significantly lower in individual with functional flat foot when compared to those with normal foot alignments. H-reflex amplitudes of abductor hallucis muscles were significantly lower in individual with functional flat foot when compared to those with normal foot alignments. Changes of peak-to-peak amplitudes and ratios of abductor hallucis muscles and tibialis anterior muscles during different postural tasks were significantly different in individuals with functional flat foot after a 3-week short foot exercise training regimen. Changes of H-reflex amplitudes of abductor hallucis muscles were significantly different in individuals with functional flat foot after a 3-week short foot exercise training regimen

Interventions

OTHERBehavioral: short foot exercise

Behavioral: short foot exercise 30 repetitions per section (10 seconds for each contraction, 1 minute between sections), 3 times/ week, 3 weeks

Study design

Allocation

NON_RANDOMIZED

Intervention model

PARALLEL

Primary purpose

OTHER

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

20 Years to 45 Years

Healthy volunteers

Yes

Inclusion criteria

: Inclusion Criteria: * Age between 20 and 45 years * No ankle injury within the previous 6 months * No diagnosed lower extremity injuries * No ankle pain at the time of the study * Foot posture index score: 0 to +5 for the normal foot (NF) group; +6 to +12 for the functional flat foot (FFF) group * Navicular drop: 5-9 mm for the NF group; \> 10 mm for the FFF group

Exclusion criteria

* Foot posture index score: \<0 * Navicular drop\< 5 mm * Leg length discrepancy \> 1.5 cm * Diagnosed severe scoliosis * Neurological injuries over lower extremities

Design outcomes

Primary

Measure	Time frame	Description
Muscle activities: EMGs (mV)	Baseline	EMGs (mV) in each posture
Muscle activities: H-reflexes (mV)	Baseline	H-reflexes (mV) in each posture
Muscle activities change will being assessed: EMGs (mV)	Baseline. week 3	EMGs (mV) in each posture
Muscle activities change will being assessed: H-reflexes (mV)	Baseline. week 3	H-reflexes (mV) in each posture

Countries

Taiwan

Contacts

Primary ContactJen Yu Chen, Ph.D.

yujensch@ntu.edu.tw+886-2-33668138

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026