護理師協助行動受限的病人進行床至椅的移位，下列何者顯示正確的人體力學？
A nurse is assisting a client with mobility limitations to perform bed-to-chair transfers. Which action demonstrates correct body mechanics?
- AKeep the client's body close to the nurse's center of gravity✓ 正解使病人的身體靠近護理師的重心
- BTwist at the trunk to position the client in the chair扭轉軀幹以將病人安置於椅子上
- CBend at the waist to lift the client彎腰提舉病人
- DKeep feet close together to maintain balance雙腳併攏以維持平衡
人體力學（Body Mechanics）的核心在於保護脊椎並運用大肌群。將病人的重心靠近護理師的重心（Center of Gravity）可減少槓桿力對腰椎的壓力。移位時應採取穩定的支撐基底（雙腳分開），屈膝並運用腿部肌群起立，而非彎腰（Bend at waist）。嚴禁軀幹旋轉（Twisting），因為旋轉會造成椎間盤極大剪力。
The core of body mechanics is to protect the spine and use large muscle groups. Keeping the client's body close to the nurse's center of gravity reduces leverage forces on the lumbar spine. During a transfer, the nurse should use a stable base of support (feet apart), bend at the knees, and use the leg muscles to rise, rather than bending at the waist. Twisting of the trunk is strictly prohibited because it produces extreme shear forces on the intervertebral discs.