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下背痛除了特殊的疾病如肌無力症之外，多半是來自脊椎的受力不平均，而脊椎之所以會受力，其中一個原因是來自肌肉力量不足，導致身體的重量都壓在脊椎上，所以有些人就認為多去增加肌肉力量就能保護脊椎，但如果姿勢不正確，反而對脊椎是種傷害。
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