title: The Postural Control Characteristics of Individuals with and without a History of Ankle Sprain during Single-leg Standing: Relationship between Center of Pressure and Acceleration of the Head and Foot Parameters.
abstract: [Purpose] This study aimed to investigate the postural control characteristics of individuals with and without a history of ankle sprain during single-leg standing by examining the relationship between various parameters of center of pressure (COP) and head and foot acceleration. [Subjects] Twenty subjects with and 23 subjects without a history of ankle sprain (sprain and control groups, respectively) participated. [Methods] Mean and maximum COP velocity and maximum COP range in the anteroposterior and mediolateral components of movement were calculated using a gravicorder. The anteroposterior and mediolateral maximum accelerations of the head and foot, as well as the root mean square (RMS) of each acceleration parameter, were measured using accelerometers. [Results] In the mediolateral component, a significant positive correlation was found between maximum acceleration of the foot and all COP parameters in the sprain group. [Conclusion] Our findings suggest that mediolateral momentary motion of the foot in individuals with a history of ankle sprain has relevance to various parameters of COP.
authors.affiliation: Graduate School of Health Sciences, Gunma University, Japan ; Department of Rehabilitation, Gunma University Hospital, Japan.
authors.forename: Yota
authors.initials: Y
authors.lastname: Abe
authors.affiliation: Graduate School of Health Sciences, Gunma University, Japan ; Department of Rehabilitation, Gunma University Hospital, Japan.
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Sugaya
authors.affiliation: Graduate School of Health Sciences, Gunma University, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Sakamoto
keywords: Postural control assessment; Postural strategy; Recurrent ankle sprain