護理師協助一位行動不便的病患從床移位至椅子，下列哪項動作展現了正確的人體力學？
A nurse is assisting a client with mobility limitations to transfer from the bed to a chair. Which action by the nurse demonstrates proper body mechanics?
- AKeep the feet close together to improve balance將雙腳靠近以保持平衡
- BBend at the waist to maintain eye contact with the client彎腰以與病人保持眼神接觸
- CPivot the feet rather than twisting the torso✓ 正解轉動雙腳而非扭轉軀幹
- DPull the client toward the body using the arm muscles使用手臂肌肉將病人拉向身體
人體力學的核心在於保護脊椎避免扭轉。移位時應以雙腳為軸心旋轉，而非軀幹扭轉，這能有效分散壓力，預防腰部肌肉拉傷。彎腰（腰椎承受重壓）、雙腳併攏（重心不穩）、僅用手臂（肌肉力量不足）皆為錯誤姿勢，容易造成照護者與病患受傷。
The core of body mechanics is to protect the spine from twisting. When transferring, the nurse should pivot on both feet rather than twisting the trunk, which distributes stress evenly and prevents lumbar muscle strain. Bending at the waist (overloads the lumbar spine), keeping feet together (unstable base of support), and using only the arms (insufficient muscle strength) are all incorrect postures and can injure both caregiver and patient.
美國非常強調護理師的職業傷害預防，常有電動移位機 (Hoyer lift) 使用規定；台灣則較多依賴人力移位，護理師腰部職業傷害率較高。