手部條件與頻率對於國人男性抬舉與卸下能力之效應

The hand condition and frequency effects on lifting and lowering capacity for males

10.6848/JWL.201707_5(1).0005

吳水丕(Swei-Pi Wu)；鍾綉貞(Hsiu-Chen Chung)

人工物料搬運 ； 心物法 ； 抬舉與卸下 ； 單手與雙手 ； 作業頻率 ； manual materials handling ； psychophysical method ； lifting and lowering ； one-hand and two-hands ； frequency

工作與休閒學刊

5卷1期（2017 / 07 / 01）

55 - 71

繁體中文

本研究共徵募12位男性受試者，並使用心物法來決定受試者在一個小時作業期間內以不同的作業頻率使用單手或雙手執行抬舉和卸下作業時的最大可接受重量。作業頻率包括每分鐘搬運六次、每分鐘搬運一次以及每五分鐘搬運一次；除了收集最大可接受重量(MAW)外，心搏率(HR)和主觀施力知覺評量(RPE)亦予以收集並加以分析。結果發現：(1)搬運方式對於MAW無顯著效應外，但對於HR和整體RPE有顯著效應，抬舉作業比卸下作業為累。(2)手部條件對於MAW，HR和整體RPE均有顯著效應，雙手MAW顯著比單手為大，HR較高，但整體RPE較小。(3)作業頻率對於MAW，HR和整體RPE均有顯著效應。隨著作業頻率的增加MAW顯著下降，但HR和整體RPE則顯著增加。(4)搬運方式與手部條件具有顯著的交互效應，雙手卸下比雙手抬舉有利，而單手抬舉比單手卸下有利。搬運方式與作業頻率具有顯著的交互效應，在高、中頻率時有利於抬舉作業，而在低頻率時則有利於卸下作業。最後在卸下作業中，手部條件與作業頻率有顯著的交互效應。隨著作業頻率的增加，對雙手愈為有利。相信本研究對於人工物料搬運之資料庫建立、傷害預防和人員篩選會有所助益。

A total of 12 male subjects were recruited in this study. The psychophysical method was used to determine the handling method (lifting and lowering), frequency (0.2, 1 and 6 times / min) and hand condition (one-hand and two-hands) effects on the maximum acceptable weight of lifting and lowering tasks for a one-hour operation period. In addition to collecting the maximum acceptable weight, the heart rate (HR) and the rating of perceived exertion perception (RPE) were collected and analyzed. The results showed that: (1) Handling method had no significant effect on the MAW, but it had a significant effect on the HR and the overall RPE. The lifting task required more physical exertion than the lowering task. (2) Hand condition has a significant effect on MAW, HR and overall RPE, the MAW for two-hands is significantly larger than that for one-hand, HR is higher, but the overall RPE is smaller. (3) Frequency has significant effect on MAW, HR and overall RPE. MAW decreased significantly as the frequency increased, but HR and overall RPE increased significantly. (4) The handling method and hand condition have a significant interactive effect. Lowering with two-hands was more favorable than lifting with two-hands. Lifting with one-hand was more favorable than lowering with one-hand. The handling method has a significant interaction effect with the frequency, which is advantageous for high and medium frequency lifting tasks, while at low frequencies it is advantageous for lowering tasks. Finally, for the lowering task, the hand condition in lowering tasks has a significant interaction with the frequency, an increase in frequency, is more favorable for two-hands. It is believed that this study will be helpful for the establishment of a database manual for materials handling, injury prevention and personnel screening.

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