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Total Evaluating System for Leg Load Caused by Standing and Sitting Work.

站立和坐着工作引起的腿部负荷的总体评估系统。

基本信息

批准号：
08670394
负责人：
SEO Akihiko
金额：
$ 1.09万
依托单位：
Fukui Medical University (1997)Hiroshima University (1996)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08670394/
关键词：
Leg swelling bio-electrical impedance Effect of resting Standing work Sitting work Work load evaluation 下腿膨張下肢運動自覚症状作業負担

项目摘要

To assess the conformable working conditions in standing and sitting postures, a total system for evaluating leg load was developed. The results obtained by this project are as follows :1) The effect of resting postures on the lower leg swelling during standing work was studied. Ten male subjects kept standing for two hours, took rest for 15 minutes, and then kept standing for one more hour. Each subject took three kinds of resting postures, i.e., sitting on a normal chair, sitting on a floor, and lying on a floor. The swelling of the lower leg when resting with sitting on a floor and lying on a floor after 3-hour standing was lower than that when resting with sitting on a normal chair.2) To adjust the values measured at different postures, the effect of postures on impedance was studied. The lower leg impedance at sitting posture was always lower than that at standing. According to a model analysis, the difference is caused by the changes in shape of lower leg by the muscle contraction. The ratio of the mean values at one posture to that of the other could be used for adjusting measured values when measured data at different postures were sampled at random.3) The leg swelling, body movement, and subjective complaint of two subject who work at a cake maker were measured at their company. A dependency of the leg swelling on body movement was observed. It was clear that the detailed questionnaire was not useful for grasping the subjective complaint of the leg discomforts because clear response to the questionnaire was not obtained.4) A portable monitor for recording lower leg swelling and leg movement was newly developed. The leg movement was measured by the impedance method and the leg movement was by angular velocity sensors.

为了评价人体在站立和坐姿时的舒适性，开发了一套腿部负荷评价系统。本课题主要研究结果如下：1）研究了不同休息姿势对站立作业下肢肿胀的影响。10名男性受试者保持站立2小时，休息15分钟，然后再保持站立1小时。每个受试者采取三种休息姿势，即，坐在普通的椅子上，坐在地板上，躺在地板上。当坐在地板上休息时和站立3小时后躺在地板上时的小腿肿胀低于坐在正常椅子上休息时的小腿肿胀。2）为了调整在不同姿势下测量的值，研究了姿势对阻抗的影响。坐姿时的小腿阻抗始终低于站立时的小腿阻抗。根据模型分析，这种差异是由肌肉收缩引起的小腿形状的变化造成的。3）对两名蛋糕店工作人员的腿部肿胀、身体运动和主观抱怨进行了测量。观察到腿部肿胀对身体运动的依赖性。很明显，详细的问卷调查对于掌握腿部不适的主观抱怨没有帮助，因为没有获得对问卷的明确回答。4）新开发了用于记录小腿肿胀和腿部运动的便携式监测器。腿部运动由阻抗法测量，腿部运动由角速度传感器测量。