Clinical trial NCT03154853: Neuromuscular Study to Assess Foot Intrinsic Muscles
Official title: 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
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Flexible Flatfoot
Keywords: Electromyography,Excessive Foot Pronation,exercise,neurology,physical therapy
Lead sponsor: National Taiwan University Hospital
Sponsor class: OTHER
First posted: 2017-05-16
Enrollment: 45
Sex: ALL
Minimum age (years): 20
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: NON_RANDOMIZED
Intervention model: PARALLEL
Primary purpose: OTHER

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


Eligibility 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

Primary outcomes:
measure: Muscle activities: EMGs (mV)
timeFrame: Baseline
measure: Muscle activities: H-reflexes (mV)
timeFrame: Baseline
measure: Muscle activities change will being assessed: EMGs (mV)
timeFrame: Baseline. week 3
measure: Muscle activities change will being assessed: H-reflexes (mV)
timeFrame: Baseline. week 3
Secondary outcomes:
Other outcomes:
Locations:
city: Taipei
country: Taiwan
facility: National Taiwan University Hospital
Study officials:
affiliation: School and Graduate Institute of Physical Therapy of National Taiwan University
name: Jen Yu Chen
role: STUDY_CHAIR
References: