Measuring Postural Sway in Sitting: A New Segmental Approach

Global measures of trunk sway are traditionally used even though the trunk comprises a multiple number of segments. The authors' aim was to measure the seated sway of typically developing children using a multisegment approach. Twenty typically developing children divided into 2 groups, older a...

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Bibliographic Details
Published in:Journal of motor behavior 2015-09, Vol.47 (5), p.427-435
Main Authors: Curtis, Derek John, Hansen, Lisbeth, Luun, Malene, Løberg, Ragnhild, Woollacott, Marjorie, Saavedra, Sandy, Sonne-Holm, Stig, Berggreen, Steen, Bencke, Jesper
Format: Article
Language:English
Subjects:
Adolescent
adolescents
Aging - physiology
Child
Child, Preschool
children
Children & youth
Female
Humans
kinematics
Male
Motor ability
Movement - physiology
Postural Balance - physiology
postural sway
Posture
Posture - physiology
sitting
Torso - physiology
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Summary:Global measures of trunk sway are traditionally used even though the trunk comprises a multiple number of segments. The authors' aim was to measure the seated sway of typically developing children using a multisegment approach. Twenty typically developing children divided into 2 groups, older and younger than 10 years old, participated in this study. The children sat unsupported for 30 s while their posture and sway were quantified using stereophotogrammetry. The tendency in both age groups was to sit with a backward tilted pelvis and a kyphotic trunk. The sitting position was most varied in the younger group. Marker sway amplitude and velocity in sitting were age dependent, with reduced sway amplitude and velocity with increased age for all segments. Anteroposterior intersegmental angular sway was not age dependent. The difference in marker sway in the anteroposterior direction for the younger group appeared to result from an equally stable trunk supported on a less stable pelvis. Mediolateral marker sway and intersegmental angular sway showed a clearer age dependency. Trunk postural control does not appear to differ between children older and younger than 10 years old, but sagittal plane pelvic stability can explain the increased sway reported in younger children.
ISSN:0022-2895
1940-1027
DOI:10.1080/00222895.2014.1003782