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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.


ABSTRACT: 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.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.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.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.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.

SUBMITTER: Swanson BT 

PROVIDER: S-EPMC4984809 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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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.

Swanson Brian T BT   Riley Sean P SP   Cote Mark P MP   Leger Robin R RR   Moss Isaac L IL   Carlos John J  

The Journal of manual & manipulative therapy 20160501 2


<h4>Background</h4>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.<h4>Purpose</h4>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.<h4>Methods</h4>Ten volunteers with low back pain (LBP) underwent a manual unloading test to esta  ...[more]

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