When performing repetitive work-like tasks while standing, people may develop leg discomfort and adapt their whole-body motion to arm fatigue. How these responses are affected when working while sitting on a sit-stand stool is unknown. Asymptomatic young adults (N = 29, 15 females) performed a repetitive pointing task sitting on a sit-stand stool, while whole-body kinematics was recorded. Results showed no leg discomfort increase with fatigue. The upper body leaned more backwards and towards the non-reaching side. Variability increased at the seat (p = 0.002), shoulder (p = 0.001) and elbow (p = 0.005) but was preserved at wrist (p = 0.058) and endpoint (p = 0.088). Participants who were more fatigable increased seat variability (males, p = 0.01) or seat range of motion (females, p = 0.022) after fatigue. The sit-stand stool contributed to the response to arm fatigue, although females and males developed different strategies. The maintained endpoint variability and leg discomfort suggest that the sit-stand stool could be recommended as an alternate workstation with minimal disruption to work performance or worker discomfort.

在站立时执行类似工作的重复性任务时，人们可能会出现腿部不适并使全身运动适应手臂疲劳。坐在坐站两用凳上工作时，这些反应如何受到影响尚不清楚。无症状的年轻成年人（N = 29，15 名女性）坐在坐立凳上执行重复指向任务，同时记录全身运动。结果显示腿部不适不会随着疲劳而增加。上半身更加向后倾，向非伸手的一侧倾斜。座椅 (p = 0.002)、肩部 (p = 0.001) 和肘部 (p = 0.005) 的变异性增加，但手腕 (p = 0.058) 和终点 (p = 0.088) 的变异性得以保留。更容易疲劳的参与者在疲劳后增加了座椅可变性（男性，p = 0.01）或座椅运动范围（女性，p = 0.022）。坐立凳有助于应对手臂疲劳，尽管女性和男性制定了不同的策略。保持的终点可变性和腿部不适表明，可以推荐坐-站凳作为替代工作站，对工作表现或工人不适的影响最小。