Data available.docx

<b>Background: </b>Children with intellectual disabilities (ID) typically master walking skills much later than typically developing (TD) children and have poor postural control ability. This study aimed to explore the gait ability and characteristics of children with ID, and whether there is any difference in walking ability between them and TD children.<b>Method: </b>In this study, integrating kinematic-biomechanic-dynamic measurement methods and corresponding analysis methods (video analysis, three-dimensional force analysis, and electromyography test analysis) were used to characterise and compare the gait patterns between ID children and TD children.