Air
Bridge-Driven Lumbar Node Sweep
Lie supine and produce a slow, repeated bridge motion: lifting the pelvis a few centimeters and lowering it on a steady cycle. Determine whether the node — the vertebra that does not move — migrates along the spine with frequency, locks to a single anatomical landmark...
Full Lesson Notes
Complete Practice
Lie supine and produce a slow, repeated bridge motion: lifting the pelvis a few centimeters and lowering it on a steady cycle. The lumbar spine forms a standing wave under this drive — segments that move a lot, segments that barely move. Now adjust the cycle rate up and down by twenty percent. Determine whether the node — the vertebra that does not move — migrates along the spine with frequency, locks to a single anatomical landmark regardless of speed, or jumps discretely between two locations. Challenge: Twenty-percent rate sweeps from a slow bridge cycle is a narrow band; the node may not move enough to distinguish the three hypotheses.
