University of Tehran Sport Sciences and Health Research 2981-0205 7 1 2015 05 22 The Effect of Musculoskeletal Abnormalities of Pes Planus, Pes Cavus and Hallux Valgus on Postural Sways during Quiet Stance تأثیر ناهنجاری‌های اسکلتی عضلانی کف پای صاف، گود و انگشت شست کج بر نوسانات پاسچر در وضعیت ایستاده 143 162 53808 10.22059/jsmed.2015.53808 EN Ali Yalfani . Associate Professor, Sport Injury Department, Faculty of Physical Education and Sport Sciences, Bu Ali Sina University, Hamedan, Iran Elham Amini Semiromi . M.Sc. Student, Corrective Exercises and Sport Injury Department, Faculty of Physical Education and Sport Sciences, Bu Ali Sina University, Hamedan, Iran Zahra Raeisi Ph.D. Student, Corrective Exercises and Sport Injury Department, Faculty of Physical Education and Sport Sciences, Bu Ali Sina University, Hamedan, Iran Journal Article 2015 03 10 Recent efforts have been made to specify the proprioceptive quantity using the results of subordinate measurements including measuring postural stability and sway. As the structure of the human foot is a factor affecting motor performance, the aim of this study was to investigate the effect of musculoskeletal abnormalities of pes planus, pes cavus and hallux valgus on postural sways during quiet stance. 48 female students (mean age of 24.11±2.64 yr, height 158.53±5.92 cm and weight 55.79±7.94 kg) took part in this study. The area and velocity of postural sways were measured using FDM-S Foot pressing force device. One-way ANOVA was used for statistical analysis at significance level of 0.05. Statistical results showed a significant difference between pes cavus and normal foot (control) groups, between hallux valgus and normal foot (control) groups, between pes cavus and pes planus groups and between hallux valgus and pes planus groups (<em>P</em><0.05). The findings showed no significant differences between pes planus and normal foot (<em>P</em>>0.05). The results of this study showed that the various foot structures influence postural sway factors. Classification of foot types and rate of deformity in both clinical and research areas is very important and should receive attention. Also, sport coaches and clinical experts should be aware of these findings in order to design and apply sport and rehabilitation programs. https://sshr.ut.ac.ir/article_53808_0de739f3339e37caf79576b7fa5f4f72.pdf