Physical Treatments - Specific Physical Therapy

en Effects of Double Density Insoles on the Electromyographic Frequency Characteristics and Simultaneous Activation during Gait in People with Flat Feet آسیب شناسی ورزشی و حرکات اصلاحی Sport injury and corrective exercises پژوهشي Research <div style="text-align: justify;">Background: Evaluating muscle activation patterns such as co-contraction and frequency content can help clinicians assess neuromuscular changes during gait rehabilitation in people with pronated feet. This research examined the impact of double-density insoles on muscular co-activation and the frequency characteristics during gait in individuals with flat feet, in comparison to those with a neutral foot alignment. Methods: Twenty males with pronated feet and 20 controls with normal feet participated. Muscle activity was recorded using surface electromyography (sEMG) at 1000 Hz while participants walked over an 18-meter walkway with and without foot orthoses. Co-contraction was calculated as 1 – (antagonist mean sEMG / agonist mean sEMG). Muscular frequency content was analysed at stance sub-phase. Findings: Group-by-condition interaction was significant for knee flexor/extensor co-contraction at mid-stance, with post-hoc analysis showing increased co-contraction in the normal foot group when using orthoses. Interactions were significant for tibialis anterior, vastus lateralis, rectus femoris, biceps femoris, semitendinosus, and gluteus medius at propulsion. Post-hoc tests revealed increased activity in these muscles in foot group when wearing orthoses. Conclusion: Foot orthoses did not change knee flexor/extensor co-contraction in the pronated feet group during the mid-stance. Foot orthoses improved muscular frequency content in the pronated feet group while walking.</div> Flat foot, Insole, Co-activation, Gait 0 0 http://ptj.uswr.ac.ir/browse.php?a_code=A-10-639-2&slc_lang=en&sid=1 Ebrahim Piri Ebrahimm.piri@gmail.com No Student Research Committee, Baqiyatallah University of Medical Sciences, Tehran, Iran. Vahid Sobhani vahidsobhani@gmail.com Yes Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran. AmirAli Jafarnezhadgero amiralijafarnezhad@gmail.com No Department of Sports Biomechanics, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran Ehsan Arabzadeh Ehsanarabzadeh@gmail.com No Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran. Alireza Shamsoddini Shamsoddini@gmail.com No Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.