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- Title
Postural Control Profiles of Typically Developing Children From 6 to 12 Years old: An Approach Using Self-Organizing Maps.
- Authors
García-Massó, Xavier; Estevan, Isaac; Izquierdo-Herrera, Roberto; Villarrasa-Sapiña, Israel; Gonzalez, Luis-Millan
- Abstract
The purposes of the present study were a) to establish postural control profiles for individuals 6–12 years of age, b) to analyze the participants' characteristics (age, sex, weight, height, and physical activity) in those profiles, and c) to analyze the influence of visual information in the profiles found. Two hundred and eight typically developing children aged 6–12 years performed two trials in bipedal standing position with eyes open and closed. Feature extraction involved time, frequency, and sway-density plot variables using signals from the center of pressure. A Self-Organizing Map was used to classify and visualize the values of the participants in all the postural control variables tested. A k-means cluster analysis was applied to generate a small number of postural control profiles. The results determined six postural control profiles; three with participants denoting high stability and three considered as low stability profiles. Age, sex, and height were related to the postural control profiles. Boys were more frequently allocated in high stability clusters than girls, while the other factors yielded unclear difference between high and low stability profiles. The analysis of children's profiles reflecting postural stability should therefore involve more than one factor including the individuals' age, sex, and height.
- Subjects
SELF-organizing maps; STANDING position; K-means clustering; FEATURE extraction; PHYSICAL activity
- Publication
Journal of Motor Learning & Development, 2020, Vol 8, Issue 1, p52
- ISSN
2325-3193
- Publication type
Article
- DOI
10.1123/jmld.2018-0016