PMID- 27559274 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160825 LR - 20240325 IS - 1066-9817 (Print) IS - 2042-6186 (Electronic) IS - 1066-9817 (Linking) VI - 24 IP - 2 DP - 2016 May TI - Manual unloading of the lumbar spine: can it identify immediate responders to mechanical traction in a low back pain population? A study of reliability and criterion referenced predictive validity. PG - 53-61 LID - 10.1179/2042618614Y.0000000072 [doi] AB - BACKGROUND: To date, no research has examined the reliability or predictive validity of manual unloading tests of the lumbar spine to identify potential responders to lumbar mechanical traction. PURPOSE: To determine: (1) the intra and inter-rater reliability of a manual unloading test of the lumbar spine and (2) the criterion referenced predictive validity for the manual unloading test. METHODS: Ten volunteers with low back pain (LBP) underwent a manual unloading test to establish reliability. In a separate procedure, 30 consecutive patients with LBP (age 50.86+/-11.51) were assessed for pain in their most provocative standing position (visual analog scale (VAS) 49.53+/-25.52 mm). Patients were assessed with a manual unloading test in their most provocative position followed by a single application of intermittent mechanical traction. Post traction, pain in the provocative position was reassessed and utilized as the outcome criterion. RESULTS: The test of unloading demonstrated substantial intra and inter-rater reliability K = 1.00, P = 0.002, K = 0.737, P = 0.001, respectively. There were statistically significant within group differences for pain response following traction for patients with a positive manual unloading test (P<0.001), while patients with a negative manual unloading test did not demonstrate a statistically significant change (P>0.05). There were significant between group differences for proportion of responders to traction based on manual unloading response (P = 0.031), and manual unloading response demonstrated a moderate to strong relationship with traction response Phi = 0.443, P = 0.015. DISCUSSION AND CONCLUSION: The manual unloading test appears to be a reliable test and has a moderate to strong correlation with pain relief that exceeds minimal clinically important difference (MCID) following traction supporting the validity of this test. FAU - Swanson, Brian T AU - Swanson BT AD - Texas Woman's University, Houston, TX, USA. FAU - Riley, Sean P AU - Riley SP AD - University of Connecticut Health Center, Farmington, CT, USA. FAU - Cote, Mark P AU - Cote MP AD - University of Connecticut Health Center, Farmington, CT, USA. FAU - Leger, Robin R AU - Leger RR AD - Salem State University, MA, USA. FAU - Moss, Isaac L AU - Moss IL AD - University of Connecticut Health Center, Farmington, CT, USA. FAU - Carlos, John Jr AU - Carlos J Jr AD - Andrews University, Berrien Springs, MI, USA. LA - eng PT - Journal Article PL - England TA - J Man Manip Ther JT - The Journal of manual & manipulative therapy JID - 9433812 PMC - PMC4984809 OTO - NOTNLM OT - Low back pain OT - Reliability OT - Traction OT - Unloading OT - Validity EDAT- 2016/08/26 06:00 MHDA- 2016/08/26 06:01 PMCR- 2017/05/01 CRDT- 2016/08/26 06:00 PHST- 2016/08/26 06:00 [entrez] PHST- 2016/08/26 06:00 [pubmed] PHST- 2016/08/26 06:01 [medline] PHST- 2017/05/01 00:00 [pmc-release] AID - yjmt-24-53 [pii] AID - 10.1179/2042618614Y.0000000072 [doi] PST - ppublish SO - J Man Manip Ther. 2016 May;24(2):53-61. doi: 10.1179/2042618614Y.0000000072.