這是一種鍛鍊腹部的健身器械，輔助做仰臥起坐用的。
這是一段影片，是這種器械的使用方式，供你借鑑
https://m.youku.com/video/id_XMTEyMDU1NjEy.html?source=http%3A%2F%2Fgraph.baidu.com%2Fs%3Fsign%3D2a294e5926d0e600279ee01517149478%26f%3Dall%26tn%3Dwise%26jsup%3D%257B%2522srcp%2522%253A%2522homeBtn%2522%252C%2522entrance%2522%253A%2522GRAPH_IMAGE%2522%252C%2522image_source%2522%253A%2522GRAPH_IMAGE%2522%257D%26pageFrom%3Dgraph_upload_wise%26idctag%3Dnj%26sids%3D10010_10125_10027_10003_10006_10103_10201_10040_10071_10062_10081_10191_10290%26logid%3D1478478429&ishttps=1
這是一種鍛鍊腹部的健身器械，輔助做仰臥起坐用的。
這是一段影片，是這種器械的使用方式，供你借鑑
https://m.youku.com/video/id_XMTEyMDU1NjEy.html?source=http%3A%2F%2Fgraph.baidu.com%2Fs%3Fsign%3D2a294e5926d0e600279ee01517149478%26f%3Dall%26tn%3Dwise%26jsup%3D%257B%2522srcp%2522%253A%2522homeBtn%2522%252C%2522entrance%2522%253A%2522GRAPH_IMAGE%2522%252C%2522image_source%2522%253A%2522GRAPH_IMAGE%2522%257D%26pageFrom%3Dgraph_upload_wise%26idctag%3Dnj%26sids%3D10010_10125_10027_10003_10006_10103_10201_10040_10071_10062_10081_10191_10290%26logid%3D1478478429&ishttps=1