Effect of pronated foot posture on proprioception and postural stability based on foot posture index / 中国组织工程研究

ABSTRACT

BACKGROUND: Studies outside China have shown that there is a certain relationship between foot posture and posture stability. OBJECTIVE: Based on foot posture index scale system, to compare the effect of pronated foot posture on postural stability and proprioception. METHODS: Thirty healthy youths aged from 20 to 30 years old were enrolled, and divided into two groups according to the right foot posture index pronated group (foot posture index > 5) and neutral group (0 ≤ foot posture index 0.05). (2) When tested with single-leg (right side) static stance, sway area and length of pressure center were larger in pronated group than that in neutral group (P 0.05). (3) When tested with two-leg static stance, sway length of pressure center was larger in pronated group than that in neutral group (P 0.05). (4) Results confirmed that foot posture exerts a significant effect on postural stability. Pronated foot can reduce postural stability, which will increase sports injury and the risk of fall in the elder.