正面腰の運動
Shōmen koshi no undō
Forward waist and back exercise

 

In the bottom position, the head is up, eyes looking foward, and the back is parallel to the floor

Shimabukuro Zenshin 島袋善俊
Shōrin ryū Seibukan

Zenpō Shimabukuro and Dan Smith, Shorin ryū Seibukan: Kyan's Karate