Title

Non-Thrust Cervical Manipulations Reduce Short-Term Pain and Decrease Systolic Blood Pressure During Intervention in Mechanical Neck Pain: A Randomized Clinical Trial

Document Type

Peer-Reviewed Article

Publication Date

2019

Abstract

Objectives: To evaluate the association of resting blood pressure with pain response and evaluate the cardiovascular effects of anterior-to-posterior [AP] versus lateral [LAT] techniques of cervical spine non-thrust manipulation [NTM].

Methods: Forty-three (23 females) participants with non-chronic neck pain (mean age 29.00 ± SD 9.09 years) randomly received AP or LAT NTM to the cervical spine. Blood pressure and heart rate were measured before, during, and after the intervention. Disability and pain were measured pre- and post-intervention.

Results: Resting systolic blood pressure (SBP) was significantly associated with average pain reduction two days later on univariate and multivariate analyses (coefficients −0.029 ± SD 0.013, p = 0.036; −0.026 ± 0.012, p = 0.032).

No significant differences existed between AP and LAT NTM groups in disability, pain reduction, and cardiovascular variables. The decrease in ‘worst neck pain’ rating 2-days post-intervention was clinically significant within the AP (mean −2.43 ± SD 2.66) group. Mixed-effect model ANOVA revealed a significant change in SBP over time (estimate −1.94 ± SD 0.70, p = 0.007).

Discussion: This spinal NTM study was the first to relate resting SBP with short-term pain reduction, demonstrating SBP-related hypoalgesia. In normotensive individuals with unilateral non-chronic neck pain, each 10 mmHg higher resting SBP was associated with a 0.29-unit decrease in average pain at follow-up when holding baseline pain constant.

AP and LAT NTM equally reduced short-term pain and decreased SBP during-intervention, suggesting SBP-sympathoinhibition. These techniques have previously been shown to be sympatho-excitatory when delivered under different dosage parameters. SBP’s mediating and moderating role should be investigated.

“Level of Evidence: 1b.”

Comments

Muhammad I. Ali and Allison Breakey graduated from Sacred Heart University Doctor of Physical Therapy program.

DOI

10.1080/10669817.2019.1646985

PMID

31379301

Publication

Journal of Manual & Manipulative Therapy

Publisher

Taylor & Francis


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