Abstract
BackgroundThe medial longitudinal arch height has an effect on kinetic parameters during gait and might be related to the risk of injury. For the assessment of foot structures, the center of pressure (COP) trajectory is a more reliable and practical parameter than plantar pressure. This study aimed to clarify the COP trajectory and velocity characteristics in the medial-lateral and anterior-posterior direction of individuals with a high-arched foot during barefoot walking.MethodsSixty-two healthy young adults were asked to walk over a Footscan pressure plate to record the COP parameters during the stance phase of walking.ResultsCompared to normal arched feet, the COP during forefoot contact and foot flat phases of high-arched feet shifted anteriorly (19.9 mm and 15.1 mm, respectively), and the mean velocity of COP in anterior-posterior direction decreased by 0.26 m/s and increased by 0.044 m/s during these two phases respectively.ConclusionsThe findings of this study suggest that the displacement and velocity of COP in anterior-posterior direction was different between high-arched and normal-arched subjects during barefoot walking, which can be used for the assessment of gait characteristics for high-arched individuals. The results of this study may provide insights into modifying clinical intervention for individuals with high-arched feet to enhance rehabilitation and prevent injuries and have implications for assessing the design of footwear and foot orthotics.Graphical abstract
Highlights
Despite similarities in age and gender, foot dynamic function can differ considerably among individuals with different foot type
3 Results There was no significant difference in the self-selected walking speed between two groups (p = 0.271), with 3.85 ± 0.49 km/h for high-arched group and 3.72 ± 0.40 km/h for control group
The overall center of pressure (COP) trajectory of the high-arched feet was medially shifted compared to the normal-arched feet
Summary
Despite similarities in age and gender, foot dynamic function can differ considerably among individuals with different foot type. It has been suggested that mal-alignment and abnormal mechanics of the foot may contribute to lower extremity injuries These injures are associated with the dynamic foot function in load attenuation and force transmission through the lower extremity kinetic chain [3, 4]. It was indicated that the reduction of the weight-bearing contact area of individuals with high-arched feet might not lead to a pressure redistribution over all plantar zones. Instead, it only produced an overload on the anterior part of the foot. The medial longitudinal arch height has an effect on kinetic parameters during gait and might be related to the risk of injury. This study aimed to clarify the COP trajectory and velocity characteristics in the medial-lateral and anterior-posterior direction of individuals with a high-arched foot during barefoot walking
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