The Relationship between Y Test Results and Pressure Distribution System In Estimating Dynamic Balance of Those with Different Foot Arch Heights

Document Type : Research Paper


1 MSc, Department of Corrective Exercises and Sport Injury, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran

2 Associate Professor, Department of Corrective Exercises and Sport Injury, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran


Since sole is the lowest part of body motor chain and provides little space of reliance for balance, it seems logical that biomechanical changes in the reliance area can affect balance control. The aim of the present study was to investigate the relationship between Y test results and sole pressure distribution system in evaluating dynamic balance of people with different foot arch heights. 80 qualified subjects in the form of those with natural soles (n=28), increased internal and longitudinal arch (n=25), and decreased internal and longitudinal arch (n=27) were selected as the sample of the study. Navicular drop test was used to identify foot form and Y balance test and pressure distribution system were simultaneously used to estimate dynamic balance. Data were analyzed statistically by Pearson correlation coefficient test after descriptive examination at P≤0.05. Results showed a positive and significant relationship between Y test results and pressure distribution system in evaluating dynamic balance of those subjects with different foot arch heights (P=0.002), r=0.337). There was no significant relationship among those subjects with increased pronation (P=0.493, r=0.138), increased supination (P=0.218, r=0.255) and natural sole (P=0.06, r=0.349). Therefore, Y test may not be accurate enough to evaluate dynamic balance in those with different foot arch heights and it is better for those studies whose main aim is to evaluate dynamic balance to use more sensitive tests.


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