配戴護腰對重複性搬運作業之生物力學及生理負荷評估

本研究欲探討不同作業高度(20公分、80公分、140公分)、不同搬運重量(2公斤、5公斤、8公斤) 以及是否配戴護腰在進行人工物料搬運作業(MMH)常見的重複性抬舉、卸下物體時，對其生物力學及生理負荷的影響。受測期間使用血壓量測機、肌電圖(EMG)測量受試者血管收縮壓、心率及兩側上斜方肌、豎脊肌之肌肉負荷，並搭配Borg CR-10量表觀察主觀疲勞程度。研究結果表明在進行重複性抬舉、卸下作業時，所有依變項(血壓、心率、主觀疲勞程度、肌肉負荷)皆有隨著作業面高度、搬運重量增加而變大的趨勢，除此之外穿戴護腰也可以降低其對生理負荷的影響。因此為改善重複性抬舉、卸下作業模式對人體的負擔，應優先調整適當的高度及重量，避免腰椎長時間彎曲和伸展，並且必要時可以穿戴護腰來達到降低腰部肌肉的負荷。

This study aims to explore the common repetitive movements of manual material handling (MMH) at different heights (20 cm, 80 cm, 140 cm), different handling weights (2 kg, 5 kg, 8 kg) and whether to wear back belt. The influence of biomechanical and physiological loads when lifting and lifting the workpiece. Burden, and use the Borg CR-10 scale to observe the degree of fatigue.The research results show that when performing repetitive lifting and handling operations, all dependent variables (blood pressure, heart rate, subjective fatigue degree, muscle load) tend to increase as the height of the working surface and the handling weight increase. In addition, , Wearing back belt externally can also reduce its impact on physiological load. If necessary, you can wear a waist protector to reduce the burden on the waist muscles.