The effect of foot medial arch orthosis on the EMG of lower limb muscles

Evaluating the effect of foot medial arch support on EMG parameters of hamstring muscles, as a supporter of the anterior cruciate ligament (ACL), in men athletes with flat-feet during back squat exercise in comparison with normal-feet subjects

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20181025041458N1

Enrollment

Registered

2018-12-02

Start date

2012-04-17

Completion date

Unknown

Last updated

2019-01-14

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

Conditions

Condition 1: Flat-foot. Condition 2: Knee anterior cruciate ligament sprain. Flat foot [pes planus] (acquired) Sprain of anterior cruciate ligament of knee

Interventions

Intervention group: prefabricated foot medial arch support with 2 degrees medial wedge.

Eligibility

Sex/Gender

Male

Age

20 Years to 40 Years

Inclusion criteria

Inclusion criteria: Men athletes with Flat-Feet Men athletes with Normal-Feet Men athletes with history of doing Back-Squat exercise at least from 6 month ago Subjects with normal body mass index (BMI) (18.5-<25) Subjects with 20-40 years old

Exclusion criteria

Exclusion criteria: Any biomechanical defect that causes the athlete does not be able to do the squat History of lower extremity surgery Foot osteoarthritis Lower limb injury in the last six months Current pain in the foot Pain during walking

Design outcomes

Primary

Measure	Time frame
Root mean square (RMS) of hamstring muscles electromyographic (EMG) data. Timepoint: Before and after wearing shoes and arch support and in barefoot state. Method of measurement: Using disposable surface electromyographic (EMG) electrodes and wireless EMG apparatus (ME 6000, U.S.A).;Peak amplitude (PA) of hamstring muscles electromyographic (EMG) activity. Timepoint: Before and after wearing shoes and arch support and in barefoot state. Method of measurement: Using disposable surface electromyographic (EMG) electrodes and wireless EMG apparatus (ME 6000, U.S.A).	—

Measure

Time frame

Root mean square (RMS) of hamstring muscles electromyographic (EMG) data. Timepoint: Before and after wearing shoes and arch support and in barefoot state. Method of measurement: Using disposable surface electromyographic (EMG) electrodes and wireless EMG apparatus (ME 6000, U.S.A).;Peak amplitude (PA) of hamstring muscles electromyographic (EMG) activity. Timepoint: Before and after wearing shoes and arch support and in barefoot state. Method of measurement: Using disposable surface electromyographic (EMG) electrodes and wireless EMG apparatus (ME 6000, U.S.A).

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohsen Mirzaiekhoshalani

Shiraz University of Medical Sciences

mirmowj@gmail.com+98 71 3830 0825

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026