Effects of postural loading during static posture holding on concurrent executive function task performance
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Updated: Aug 12, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
Published on: December 11, 2013
Yihun Jeong1, Haeseok Jeong2, Doo Won Han3
1Department of Industrial Engineering, Keimyung University, 1095 Dalgubeol-daero, Dalseo-gu, Daegu, 42601, South Korea.
Abstract:
This study investigated the effects of postural loading during static posture holding on the performance of concurrent executive function tasks. Three executive function tasks, the letter memory, number-letter, and Stroop tasks, were employed for updating, shifting, and inhibition, respectively. Static posture holding involved three levels of postural loading (PL1, PL2, and PL3), corresponding to OWAS classes 1, 2, and 4, respectively. Increased postural loading resulted in decreased performance across tasks. At PL2 and PL3, compared to PL1, total score in the letter memory task decreased by 4.56% and 13.68%, switch trial reaction time in the number-letter task increased by 1.47% and 15.63%, and incongruent trial reaction time in the Stroop task increased by 4.15% and 13.44%. These findings contribute to a more comprehensive understanding of the relationship between postural loading and executive functions, and offer valuable insights into how managing postural demands may enhance cognitive task performance.
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