Ladder Barrel Side Sit Up Tutorial Apparatus: Ladder Barrel Level: Advanced | Basic | Intermediate Video Type: Tutorial Language: English Step by step tutorial on the Side Sit Up exercise including the progression of how to introduce to a first time client. Basic/Intermediate/Advanced level. This page is only available to members. Click here to try Authentic Pilates online for FREE for 14 days or log in if you are already a member. Leave a Reply Cancel replyYou must be logged in to post a comment.