Back hang scale test (BHST)
The BHST is a test based on static strength target and isometric coordination conditions. Participants perform first a static hold on the rings, and then they lower themselves from an inverted hang or inverted picked hang until the body is in an horizontal position with the face positioned towards the floor. The body should be fully straight extended, arms should be tight, wrists should be facing the floor, and the head must be in the middle position. The measurement unit of this test is stability of this position in seconds (s).