Pressure mapping as a complement in clinical sitting analysis in children during activity

Abstract

The purpose of this study was to investigate whether pressure mapping can be used as a complement in sitting analysis. The purpose was also to study test-retest reliability and to obtain reference values in healthy children. The children performed a structured activity sitting on the pressure mat. The variables studied in children 4-15 years of age were the mean pressure distribution of one half of the body in relation to the whole sitting surface and the transfer of the centre of pressure (COP) in target reaching in relation to the calculated mean COP when sitting still. The standard deviation for the mean COP was calculated and test-retest for reliability was performed. The results showed significant differences between the youngest children and children 8-15 years of age concerning the transfer of COP sideways and in standard deviation of mean COP sideways. The results for weight distribution, COP transfer sideways and deviation from mean COP sideways were repeatable and consistent with studies of postural control in children. Pressure mapping was considered feasible as a complement to qualitative sitting analysis when looking at seat load symmetry, transfer of COP sideways and deviation from mean COP sideways. Reference values were gathered and can be used as comparison in future studies of children with disabilities.