— 基本照護與舒適 · MEDIUM · MCQ —
護理師哪項動作展現了對正確人體力學（Body Mechanics）的理解？
Which action by the nurse demonstrates an understanding of proper body mechanics?
- AKeeping feet together while lifting搬運時雙腳併攏
- BTwisting the torso while moving a heavy object搬動重物時扭轉軀幹
- CKeeping the object close to the center of gravity✓ 正解將物體保持在重心附近
- DStraightening the knees fully to lift heavy objects完全伸直膝蓋以搬起重物
— Explanation · 中文詳解 —
人體力學（Body Mechanics）的核心在於力矩控制與重心穩定。護理師移動重物時，應將物體保持在身體重心（Center of Gravity）附近，這能縮短力臂，顯著減少脊椎承受的剪力與壓力。正確的姿勢應維持背部挺直、雙腳分開以擴大支撐基底（Base of Support），並運用大腿肌肉而非腰部力量進行抬舉或移動。
Proper body mechanics involve keeping the object close to the center of gravity to shorten the lever arm and reduce stress on the spine. This technique minimizes the force exerted on the back, whereas twisting or keeping feet together increases the risk of injury.