This laboratory study aimed to characterize the dynamics of sitting during a 40 min computer task in 20 younger (YG) and 18 older (OG) computer users. The position of the center of pressure (COP) in anterior-posterior (AP) and medial-lateral (ML) direction was computed. The range, velocity, area, standard deviation (SD) and sample entropy (SaEn) values were extracted. The range, velocity and area of the COP displacement were larger in the AP while the SD and SaEn were respectively larger and smaller in both AP and ML for the OG than the YG. The findings revealed altered dynamics of sitting among older computer users.

中文翻译：

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电脑工作期间的坐姿动态与年龄有关

本实验室研究旨在表征 20 名年轻 (YG) 和 18 名年长 (OG) 计算机用户在 40 分钟计算机任务中坐着的动态。计算压力中心 (COP) 在前后 (AP) 和内外 (ML) 方向上的位置。提取范围、速度、面积、标准偏差 (SD) 和样本熵 (SaEn) 值。AP 的 COP 位移的范围、速度和面积较大，而 OG 的 AP 和 ML 的 SD 和 SaEn 分别大于和小于 YG。研究结果揭示了老年计算机用户坐着的动态变化。