[KongchangAI]
Unverified82% confidenceTradeoffTime unknown

三颗球为统一直径、不同重量的设计,优点是进阶时体感一致只增加负重,但对盆底肌力极弱的初学者来说最轻的28g仍可能难以夹持,需要从无球收缩练习过渡

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82%
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Long-term
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