Unverified82% confidenceDecision RuleTime unknown

运动上衣胸围与实际净胸围的正差应控制在4-6cm才算真正的合体运动版型；小于4cm会限制大肌群发力（如深蹲、卧推的肩背扩张），大于8cm则在跑跳时布料晃动增加风阻和心理干扰

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合体运动上衣category

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Unverified跑步、跳操等高冲击运动应选宽度≥4cm的高腰款(腰头到肚脐上方)配硅胶防滑条，避免运动中下滑；瑜伽等静态运动可选中腰款以减少腹部束缚81% similar Unverified防撞厚度越大保护越好但灵活度和透气性越差，且重量增加影响挥拍/投篮动作；日常运动防护选5-8mm护垫已足够，专业极限运动才需10mm以上79% similar

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