A prospective study of computer users: II. Postural risk factors for musculoskeletal symptoms and disorders
A prospective study of computer users: II. Postural risk factors for musculoskeletal symptoms and disorders
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DOI：
10.1002/ajim.10067
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发表时间：
2002-04-01
影响因子：
3.5
通讯作者：
Kleinbaum, D
中科院分区：
文献类型：
--
作者：
Marcus, M;Gerr, F;Kleinbaum, D
背景尽管广泛的建议，姿势在计算机使用过程中，具体的姿势和肌肉骨骼健康之间的关联没有很好的characteristic.Methods六百三十二个新雇用的计算机用户进行了前瞻性的评估姿势和颈部或肩部（N/S）和手或手臂（H/A）肌肉骨骼症状和肌肉骨骼疾病之间的关联。参与者的姿势在进入时被测量，他们在每周日记中报告症状。对报告症状的参与者进行了特定疾病的检查。多变量考克斯回归模型用于估计姿势变量与症状和障碍风险之间的关联，控制混杂变量。结果肘内角> 121度，头部向下倾斜更大，参与者椅子上有扶手与N/S症状或N/S障碍的风险较低相关。肘部高度低于“J”键的键控和电话肩托的存在与N/S症状或N/S障碍的风险更大相关。“J”键的水平位置距离桌子边缘> 12 cm与H/A症状和H/A障碍的风险较低相关。使用键盘时，“J”键高于桌面> 3.5 cm，键激活力> 48 g，使用鼠标时桡腕偏离> 5度，与H/A症状或H/A障碍的风险更大相关。键控小时数/周与H/A症状和disorders.Conclusions的结果表明，肌肉骨骼症状和肌肉骨骼疾病的风险可能会减少，鼓励特定的坐姿。(C)2002 Wiley-Liss，Inc.
Background Despite widespread recommendations regarding posture during computer use, associations between specific postures and musculoskeletal health are not well characterized.Methods Six hundred and thirty-two newly hired computer users were followed prospectively to evaluate associations between posture and neck or shoulder (N/S) and hand or arm (H/A) musculoskeletal symptoms and musculoskeletal disorders. Participants' postures were measured at entry, and they reported symptoms on weekly diaries. Participants reporting symptoms were examined for specific disorders. Multivariate Cox regression models were used to estimate associations between postural variables and risk of symptoms and disorders, controlling for confounding variables.Results Keying with an inner elbow angle > 121degrees, greater downward head tilt, and presence of armrests on the participants chair were associated with lower risk of N/S symptoms or N/S disorders. Keying with elbow height below the height of the "J" key and the presence of a telephone shoulder rest were associated with a greater risk of N/S symptoms or N/S disorders. Horizontal location of the "J" key > 12 cm from the edge of the desk was associated with a lower risk of H/A symptoms and H/A disorders. Use of a keyboard with the "J" key > 3.5 cm above the table surface, key activation force > 48 g, and radial wrist deviation of > 5degrees while using a mouse was associated with a greater risk of H/A symptoms or H/A disorders. The number of hours keying/week was associated with H/A symptoms and disorders.Conclusions The results suggest that the risk of musculoskeletal symptoms and musculoskeletal disorders may be reduced by encouraging specific seated postures. (C) 2002 Wiley-Liss, Inc.