Table 2.

Four types of sling lumbar settings.

Position	Exercise method
SLS (Figure 1(a))	Subject supine with arms on the abdomen. Elevate legs to 90 degrees of hip and knee flexion. Lower treatment table to lift the pelvis from the surface.
PLS (Figure 2(a))	Subject prone with wide sling under the chest. Narrow slings distally on the thighs. The head supported in a split sling, attached with black elastic cords to rope in the pulley.
LSLS/RSLS (Figure 3(a))	Subject side-lying with wide sling under the chest and hands on the chest. Narrow sling distally on the thighs. The head supported in a split sling attached with black elastic cords to rope in the pulley. The left side is the dominant side in LSLS and vice versa.

SLS: supine lumbar setting; PLS: prone lumbar setting; LSLS: left side-lying lumbar setting; RSLS: right side-lying lumbar setting.