Unverified85% confidenceTradeoffTime unknown
电极片数越多越精准：4电极(纯脚部)最基础，8电极(手柄+脚踏)可分区测量四肢躯干肌肉量；分区肌肉数据对判断肌肉不平衡有意义，普通减重用户4电极足够
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Unverified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87% 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86% similarUnverified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85% similarUnverified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85% similarUnverified需要监测肌肉/骨骼肌分区数据（四肢躯干分段测量）时，必须选八电极（手脚同时测量）机型，仅脚部四电极的秤无法区分上下肢肌肉分布84% similar
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