肌肉重量的增减，并不是数量上有了变化，而是肌肉纤维粗细不同的缘故。
Changes in muscle weight, not the number has changed, but the reason the thickness of muscle fibers.
继续增减重量，指导运动员能够能够用正确的姿势找到自己的极限重量。
Continue increasing or decreasing the load until the athlete can complete one repetition with proper exercise technique.
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