اثر استفاده طولانی مدت از کفش motion control بر فعالیت الکترومایوگرافی عضلات اندام تحتانی و نیروی عکس¬العمل زمین طی دویدن در دونده¬های مرد مبتدی با پای پرونیت

Valizadeh Oranj, Aidin (2019) اثر استفاده طولانی مدت از کفش motion control بر فعالیت الکترومایوگرافی عضلات اندام تحتانی و نیروی عکس¬العمل زمین طی دویدن در دونده¬های مرد مبتدی با پای پرونیت. Masters thesis, University of Mohaghegh Ardabili.

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Abstract

Research Aim:Most of the functional disorders in the foot area are caused by changes in the arches of the foot. The motion control shoes are designed to control excessive movement of the back of the foot. Walking disorder disrupts the lives of people with excessive pronation. Therefore, identifying the right solution for people with over-pronation is important. The purpose of this study was to investigate the effect of long-term use of motion control shoes on electromyographic activity of lower extremity muscles and ground reaction force during running in beginner male runners with peroneal leg. Research method:The statistical sample of this study consisted of 24 men with perunate legs who volunteered to participate in the study. Subjects were randomly divided into two control groups (age: 24.1 ± 5.6 years, height: 166 ± 2.2 cm, weight: 52.66 ± 6.3 kg). The experimental group (age: 24.1 ± 5.6 years, height: 166 ± 2.2 cm, weight: 52.66 ± 6.3 kg) was divided into two groups. Bone drooping method was used to divide the subjects into two groups of peroneal and healthy foot. Subjects were asked to sit on a chair and put their feet in the open position. The individual's feet were then placed in a natural position, so that the researcher placed his or her self-esteem under the inner ankle. The person gently moves the foot in and out so that the researcher's index finger and thumb are aligned. In this case, the vessel extension was marked and then the distance between the bump and the floor was measured by a ruler. The subjects were then asked to stand upright and to distribute their weight equally on two legs. In this case, the height of the vessel was measured from the floor. If the displacement of these two modes was nine to five millimeters, the foot had normal and if equal to or greater than 10 millimeters individual had foot pronation. The subjects' upper legs were identified by the ball firing test. All subjects were right-handed. Findings: The findings of the present study showed that after prolonged use of control motion shoes internal-external force during pushing phase (d = 0.86 ؛ P = 0.022) and also the time of peak force in vertical direction during The heel contact phase (d = 1.05; P = 0.013) had a significant increase during post-test compared to pre-test. Vertical loading rate also showed a significant decrease during the post-test compared to the pre-test (P = 0.43; P = 0.010). Other components of ground reaction forces in three directions, peak time, center of pressure and free torque did not show any significant difference during post-test compared to pre-test in experimental group (P <0.05). Conclusion:The results of this study showed that foot hyperpronation is associated with abnormalities in kinetic pattern and electromyographic activity of muscles during walking. Motion control shoes help to improve this anomaly.

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