Unverified85% confidenceDecision RuleTime unknown
健身增肌人群应选择八电极(手足双测)机型而非四电极(仅足底)，八电极能分段测量四肢和躯干肌肉/脂肪，四电极对下肢外的部位靠算法推算，误差更大
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85%
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Long-term
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Unverified四电极（双脚）体脂秤只能测下半身阻抗再算法推算全身，八电极（手脚同测）能分段测量四肢与躯干，健身增肌需求建议选八电极款93% similarUnverified四电极体脂秤只测下半身阻抗后靠算法推算全身，八电极(手握+脚踏)分段测量四肢躯干，健身人群或需要看肌肉分布的选八电极91% similarUnverified选购时优先看电极数量：4电极（仅双脚）只能测下半身阻抗后推算全身，误差大；8电极（手足接触式）分段测量四肢+躯干，健身增肌人群应选8电极机型90% similarUnverified四电极（脚踏）秤只测下半身电阻，对上肢体脂估算偏差大；需要分段体成分（手臂/躯干/腿）应选带手柄的八电极机型89% similarUnverified需要相对准确体脂数据的健身人群应选八电极机型（含手握测量），双手双脚接触可分段测量四肢，误差可缩小至±2%左右，比单纯脚踏四电极精度显著提升89% similar
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