Phase Level Assessment of Ergonomic Intervention Effectiveness in Reducing Knee Musculoskeletal Disorder Risks During Residential Roof Shingle Installation.

IF 2.7 3区医学 Q2 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

American journal of industrial medicine Pub Date : 2025-01-09 DOI:10.1002/ajim.23701

Nazia Zerin, Scott P Breloff, Fei Dai, Robert E Carey, Christopher M Warren, Kevin Moore, Ashley Hawke, John Z Wu

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引用次数: 0

Abstract

Background: This study aimed to assess how knee savers (KSs) and knee pads (KPs) alleviate risks of knee musculoskeletal disorders (MSDs) among roofers during various phases of shingle installation. These phases encompass (1) reaching for shingles, (2) placing shingles, (3) grabbing a nail gun, (4) moving to the first nailing position, (5) nailing shingles, (6) replacing the nail gun, and (7) returning to an upright position.

Methods: In a laboratory setting, nine male participants simulated the shingle installation task on a slope-adjustable roof platform (0°, 15°, and 30° slopes) under four intervention conditions: no intervention (NO); with KPs only (KP); with KSs only (KS); and with both KPs and KSs (BO). Knee flexion, abduction, adduction, and internal/external rotations were measured to assess intervention impact through statistical analysis.

Results: Phase 5 (nailing shingles), one of the riskiest phases, saw reduced knee rotations, with BO and KP interventions being the most effective. Phase 6 (replacing the nail gun) exhibited notable reductions in all knee rotations, primarily due to BO intervention. Significant improvements in certain knee angles for other phases were noted, particularly with BO intervention.

Conclusions: BO and KP can lower knee strain by minimizing extreme knee postures and thereby reducing the risk of MSDs during the installation of shingles, especially at critical periods and on steeper slopes. This study highlights the importance of applying focused ergonomic techniques in the roofing sector to improve workers' musculoskeletal health.

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降低住宅屋面瓦安装过程中膝关节肌肉骨骼疾病风险的人机工程学干预效果的阶段水平评估。

背景：本研究旨在评估护膝装置（KSs）和护膝装置（KPs）如何在瓦板安装的不同阶段减轻屋顶工人膝盖肌肉骨骼疾病（MSDs）的风险。这些阶段包括(1)到达瓦板，(2)放置瓦板，(3)拿钉枪，(4)移动到第一个钉位置，(5)钉瓦，(6)更换钉枪，(7)回到直立位置。方法：在实验室环境中，九名男性参与者在坡度可调节的屋顶平台（0°，15°和30°坡度）上模拟瓦板安装任务，并在四种干预条件下进行：无干预（no）；只有KPs (KP)；只有KSs (KS)；KPs和KSs同时存在（BO）。测量膝关节屈曲、外展、内收和内/外旋，通过统计分析评估干预的影响。结果：第5期（钉带状疱疹）是最危险的阶段之一，膝关节旋转减少，BO和KP干预最有效。第6阶段（更换钉枪）显示所有膝关节旋转明显减少，主要是由于BO干预。其他阶段的某些膝关节角度显著改善，特别是BO干预。结论：BO和KP可以通过减少极端的膝关节姿势来降低膝关节疲劳，从而减少在瓦片安装期间发生MSDs的风险，特别是在关键时期和更陡峭的斜坡上。这项研究强调了在屋顶行业应用重点人体工程学技术以改善工人肌肉骨骼健康的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American journal of industrial medicine 医学-公共卫生、环境卫生与职业卫生

CiteScore

5.90

自引率

5.70%

发文量

108

审稿时长

4-8 weeks

期刊介绍： American Journal of Industrial Medicine considers for publication reports of original research, review articles, instructive case reports, and analyses of policy in the fields of occupational and environmental health and safety. The Journal also accepts commentaries, book reviews and letters of comment and criticism. The goals of the journal are to advance and disseminate knowledge, promote research and foster the prevention of disease and injury. Specific topics of interest include: occupational disease; environmental disease; pesticides; cancer; occupational epidemiology; environmental epidemiology; disease surveillance systems; ergonomics; dust diseases; lead poisoning; neurotoxicology; endocrine disruptors.