Unverified82% confidenceDecision RuleTime unknown
减重书包架的核心原理是将肩部负重转移至髋部，选购时确认其带有髋托/腰带结构，仅有背板支撑而无腰部承重转移设计的产品减负效果有限（＜30%），真正有效的产品可将50%-70%重量转移至髋部
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82%
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Long-term
Relevance
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