Cross-spectral analysis quantifies the segmental coordination in unstable sitting

Abstract Introduction: Low back pain(LBP) affects many individuals and is known to be associated with impaired trunk control. While LBP can by treating underlying impairments, a better understandinf of the mechanistic origin disorder required. Trunk control has been commonly studied via an unstable sitting paradigm. Knowledge on how base support body segments work together complete task, this modified in LBP, could utilized when designing interventions for population. Our obiective was characterize segmental coordination non-impaired as elicited wobble board(WB) Methods: WB, pelvis, motion were recorded fifteen non-disabled participants board. We used cross-spectral analysis quantify anterior-posterior angular kinematics board, trunk. Results: During sitting, pelvis followed that trunk(one-eighth-cycle delay) board(half-cyclw at frequenties between 1 2 Hz. Conclusion: Future should utilize knowledge gained study creating rehabilitation LBP.