During Sahrmann test stage 4, which describes the movement?

During Sahrmann test stage 4, which describes the movement?

• A. Both legs are lowered together toward the floor to a point just before pressure changes then returned to tabletop.
• B. One leg is lowered to the floor while the other stays on the tabletop.
• C. The trunk is flexed while maintaining constant pressure.
• D. The legs are lifted to table height.

Answer: (A)

The movement tested here focuses on lumbopelvic control during progressive leg-lowering tasks using a pressure biofeedback unit. In the final stage, both legs are lowered together toward the floor while you keep the lumbar spine stable, indicated by the pressure remaining constant, and you stop just before the pressure would change, then return to the starting position with the legs at table height. This bilateral lowering requires the strongest coordination and activation of deep stabilizing muscles (like the transversus abdominis) to prevent the spine from moving. The other descriptions describe movements that are easier or different tasks in the progression: lowering a single leg is less demanding than lowering both legs simultaneously, lifting the legs to table height is an earlier position before any lowering, and flexing the trunk with constant pressure doesn't involve the leg-lowering challenge at all.

The movement tested here focuses on lumbopelvic control during progressive leg-lowering tasks using a pressure biofeedback unit. In the final stage, both legs are lowered together toward the floor while you keep the lumbar spine stable, indicated by the pressure remaining constant, and you stop just before the pressure would change, then return to the starting position with the legs at table height. This bilateral lowering requires the strongest coordination and activation of deep stabilizing muscles (like the transversus abdominis) to prevent the spine from moving.

The other descriptions describe movements that are easier or different tasks in the progression: lowering a single leg is less demanding than lowering both legs simultaneously, lifting the legs to table height is an earlier position before any lowering, and flexing the trunk with constant pressure doesn't involve the leg-lowering challenge at all.