利用腰力引体上升，维持约5秒后，将身体平放在地上，重复动作15次。
Using the waist strength pull-ups rise, maintain about 5 seconds later, the body flat on the ground, repetitive movements 15 times.
利用腰力引体上升，维持约5秒后，将身体平放在地上，重复动作15次。
Using the waist strength pull-ups rise, maintain about 5 seconds later, the body flat on the ground, repetitive movements 15 times.
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