Introduction: Dynamic postural control in daily activities and sports is necessary and decisive. Injuries were more common with poor postural control is impaired it can lead to an increased risk of injury during sport activities. Assessment of postural control, an important tool for determining levels of neuromuscular performance athletes as well as prevent injury and rehabilitation. Also the use of superior organs and the stability of one-legged stance among athletes in different disciplines may be different. Asymmetry dominant and non-dominant equilibrium can be traumatic factor for athletes, So understand the ability to maintain postural control between lower limb movements such as walking and running, which is very important both legs alike.
Methodology: 15 active male students from the Khwarizmi of University with an average and standard deviation (Age=22.53±1.59 years, Weight=74.66±6.76 kg, and Height=176.13±5.35 cm) They were chosen conveniently. Posture control index (center of mass changes to center of pressure) in two directions of anterior – posterior and medial-lateral using two force plate was recorded and inverted pendulum using the formula Winter (COP-COM = I × CÖM.Wh) was calculated. Having been ascertained of the normality of data using Shapiro-Wilk test, and dependent t-test was used investigate the within group differences at a significance level of p<0.05.
Results: The results of the study revealed that there was no significant difference between dominant and non-dominant legs regarding the average center of mass changes to center of pressure during walking and running in two directions of anterior – posterior and medial-lateral (p>0.05).
Discussion: it seems that there is no difference among various sports athletes’ ability to maintain the balance between dominant and non-dominant legs, especially sports which use both legs equally. These results can be beneficial for the specialists in this field who use one leg for individuals’ balance index.