摘要
職業性下背痛是常見的傷害，尤其是以搬運為主的工作，最容易引起背部與脊椎的病變。本研究所開發出之新式背帶，尋求其它之傳力管道，降低手部施力、二頭肌、三頭肌與背直肌的負荷。本論文著重在荷重計（Load cell）的手部施力分析，來驗證背帶的省力效果。 本實驗的資料共分為四種分析方式，分別是由抬舉瞬間之最高點值（peak）、抬舉後至產生peak值之時間間距、搬運過程之均方根（Root Mean Square，RMS），以及peak值與木箱重量之比率。 根據分析的結果，使用背帶對抬舉瞬間之peak值、抬舉至peak產生之時間間距，以及peak值與木箱重量的比率，使用與未使用背帶之間的施力狀況並沒有明顯的差異。但是在整個搬運過程中，使用與未使用背帶的施力值則有明顯的差異。 由結果可知，使用背帶並沒有明顯降低手部在抬舉瞬間的施力，對於抬舉後至產生peak值之時間間距並沒有明顯的延遲。在整個搬運過程中，背帶能降低單位時間的平均施力，降低搬運過程中之工作負荷。
並列摘要
Occupational low back pain is a common injury, especially the work of lifting, which may cause disorders in the lumbar spine. The new belt was developed to reduce the hand forces, specifically the load of the biceps, and erector spinae. The thesis presents the analysis of the hand force measured from load cells, to test and verify the effect of the belt. Four hand force variables were analyzed, including the peak force of the lift-off, the time between lift-off to peak, the root mean square of the force during entire lifting process, and the proportion of the peak force to the weight of the load. According to the result of the analysis, when compares lifting with belt and without belt, there was no significant difference in the peak force of lifting, the time between lift-off to peak, and the proportion of the peak to the weight of the load, but the root mean square of the force during lifting process was significant. From the result, using the belt doesn’t significantly reduce the peak hand force at lift-off, and it does not delay the peak occurring time either. The belt was found to reduce the average hand force for the entire lifting process, which would decrease the workload of the lifting process.