The objective of this study was to assess the impact of using alternative mast climbing work platform (MCWP) designs on trunk motion and postural stability with masonry workers while performing bricklaying and stepping down tasks using a conventional MCWP setting (i.e. with a step deck) as well as two types of production tables (straight- and L-shaped). The trunk angles and postural sway parameters of twenty-five masonry workers were recorded for the following tasks: (1) standing on a simulated MCWP and laying bricks on an adjacent wall, and (2) stepping down onto the step deck to get into position for doing the bricklaying task. Results indicated that the use of the L-shaped production table resulted in the lowest trunk ranges of motion and significantly reduced the workers' trunk angles in all three planes when compared to both the straight-shaped production table and the conventional approach of not using a production table. Data showed that both body sway velocity and area were significantly reduced when using either one of the production tables. The use of production tables significantly reduced impact sway forces when workers stepped from the main platform to the step deck. The use of production tables on MCWPs improved workers’ postures and overall stability, which could reduce the risk of injury.

本研究的目的是评估使用替代桅杆攀爬工作平台 (MCWP) 设计对砌体工人在使用传统 MCWP 设置（即阶梯甲板）进行砌砖和下楼任务时对躯干运动和姿势稳定性的影响以及两种类型的生产台（直型和 L 型）。记录了 25 名砌筑工人的躯干角度和姿势摇摆参数，以完成以下任务：（1）站在模拟的 MCWP 上并在相邻的墙上砌砖，以及（2）走下台阶甲板到位用于完成砌砖任务。结果表明，L 形生产台的使用导致躯干运动范围最小，并显着减少了工人的 与直形生产台和不使用生产台的传统方法相比，所有三个平面中的树干角度。数据显示，使用任一生产表时，车身摇摆速度和面积均显着降低。当工人从主平台走到台阶甲板时，生产台的使用显着降低了冲击力。在 MCWP 上使用生产台改善了工人的姿势和整体稳定性，从而降低了受伤风险。当工人从主平台走到台阶甲板时，生产台的使用显着降低了冲击力。在 MCWP 上使用生产台改善了工人的姿势和整体稳定性，从而降低了受伤风险。当工人从主平台走到台阶甲板时，生产台的使用显着降低了冲击力。在 MCWP 上使用生产台改善了工人的姿势和整体稳定性，从而降低了受伤风险。