本研究的目的是探討在不同路徑下施力方式、手推車型式以及重心配置對於握力值的影響，透過手部握力量測系統所收集的數據了解重心位置改變時的握力變化值。研究設計有三個自變數，分別為施力方式、手推車型式以及重心配置。施力方式為推與拉，手推車型式為單輪與雙輪，重心配置共有15個水準，分別代表在推車上不同的位置。應變數為三種路徑(直線、轉彎、上坡)分別的左右手握力和的平均值與最大值。
實驗結果顯示，在不同路徑下均有一致的結果，採用雙輪手推車以及採用推的方式所需握力值較小。不同重心位置之改變對於受試者使用手推車有影響。在重心位置為高度差異的組合下，重心位置在最高層時，會產生較大的握力。重心位置放置於底層遠離受試者的位置時，所需使用的握力較小；在重心位置為水平差異的組合下，重心位置在左右兩側時，會產生較大的握力。重心位置放至於底層中間遠離受試者的位置時，所需使用的握力較小。
本研究結果期望能夠提供較佳之手推車型式、施力方式以及物料重心配置給推車作業人員，做為進行人工物料搬運時之參考依據。

The objective of this study was to measure grip forces with 2 different carts: one-wheeled and two-wheeled, for 2 different levels of force: push and pull, and 15 different levels of center of mass (COM). By grip force measure system, the changes of average and maximum grip force are recorded.
The result shows an agreement on different paths (straight, 90° to the left, uphill), using two-wheeled cart with pushing, that lower gripping force is consumed. Besides, different centers of mass have an effect on gripping force. When the center of mass is vertically located at a higher position, larger gripping force will be needed. When the center of mass is horizontally compared, larger gripping force will be needed in left-sided or right-sided center of mass. Overall, the lowest gripping force occurred when the center of mass is at the bottom of the cart and away from the handle.
The result of the research provides a better understanding of cart types, force types, and center of mass location, which can be used for the assessment of manual materials handling tasks.

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