{"id":3431,"date":"1993-06-01T21:45:17","date_gmt":"1993-06-02T04:45:17","guid":{"rendered":"https:\/\/www.activator.com\/?p=3431"},"modified":"2023-06-07T08:34:44","modified_gmt":"2023-06-07T15:34:44","slug":"responsiveness-of-leg-alignment-changes-associated-with-articular-pressure-testing-to-spinal-manipulation-the-use-of-a-randomized-clinical-trial-design-to-evaluate-a-diagnostic-test-with-a-dichotomou","status":"publish","type":"post","link":"https:\/\/activator.com\/responsiveness-of-leg-alignment-changes-associated-with-articular-pressure-testing-to-spinal-manipulation-the-use-of-a-randomized-clinical-trial-design-to-evaluate-a-diagnostic-test-with-a-dichotomou\/","title":{"rendered":"Responsiveness of leg alignment changes associated with articular pressure testing to spinal manipulation: the use of a randomized clinical trial design to evaluate a diagnostic test with a dichotomous outcome."},"content":{"rendered":"

Abstract<\/h3>\n
\n

OBJECTIVE:<\/h4>\n

A study was undertaken to assess the stability of leg alignment reaction to a pressure challenge and its responsiveness to an adjustive intervention.<\/p>\n

DESIGN:<\/h4>\n

Prospective, double-blind clinical trial of a diagnostic test.<\/p>\n

SETTING:<\/h4>\n

Laboratory: Center for Technique Research.<\/p>\n

PARTICIPANTS:<\/h4>\n

Forty-two chiropractic college students, faculty and staff.<\/p>\n

INTERVENTIONS:<\/h4>\n

A high-velocity, low-amplitude, short lever adjustment of a single vertebra from among C1 and T3-T7; or a sham adjustment similar to a manual diagnostic pressure test at C1, T3-T7 or T9-T10.<\/p>\n

MAIN OUTCOME MEASURES:<\/h4>\n

Leg alignment reactivity: An increase in leg alignment discrepancy (yes or no) following a metered pressure challenge to a vertebra.<\/p>\n

RESULTS:<\/h4>\n

On average, stability was poor at T3-T7 (Kappa = 0.04), moderate at C1 (K = 0.47), and fair for sham pressure tests (K = 0.30). Responsiveness: The proportion of positive baseline leg alignment reactions that responded (became negative) to sham adjustment was 95% at T3-T7 and 55% at C1. Further analysis was untenable since too few vertebrae were implicated for an adjustment.<\/p>\n

CONCLUSIONS:<\/h4>\n

For the population investigated, the majority of the responsiveness of the leg alignment diagnostic test to a rotatory adjustment appears to be a diagnostic illusion (i.e., background noise unrelated to a treatment intervention). Further research with different subject populations, regions of investigation, leg alignment measurement techniques and vertebral challenge techniques are indicated.<\/p>\n

\n

J Manipulative Physiol Ther.<\/a> 1993 Jun;16(5):306-11. [PMID:8345313<\/a>]<\/p>\n

Author information:\u00a0Haas M, Peterson D, Rothman EH, Panzer D, Krein R, Johansen R, Solomon S.\u00a0Research Department, Western States Chiropractic College, Portland, OR 97230.<\/p>\n<\/div>\n