Gemmell H A, Jacobson B H
Department of Health, Physical Education and Recreation, Oklahoma State University, USA.
J Manipulative Physiol Ther. 1995 Sep;18(7):453-6.
To compare the immediate effects on pain of Meric and Activator adjustments in patients with acute low back pain (LBP).
Adjustments were compared using a randomized, controlled clinical trial for relative effectiveness.
The study was conducted at a private chiropractic clinic in Tulsa, Oklahoma.
Thirty consecutive established patients presenting with acute LBP were studied. Sixteen subjects were randomly assigned to the Meric group and 14 to an Activator group. The mean (SD) age was 53.5 (9.5) for the Activator group and 51.8 (10.3) for the Meric group.
The subjects received either a single Meric or Activator adjustment to the posterior joints involved.
Before and immediately after the adjustments, subjects rated their pain intensity on a visual analog pain scale.
The mean reduction in pain for the Activator group was means = 22.2, SD = 21.7; for the Meric group means = 21.8, SD = 21.5. The results indicate that there is no significant difference between Meric and Activator adjustments in reducing acute LBP (F = .005, df = 2, 27, p = .941).
This study demonstrated no advantage of one procedure over the other for the reduction of pain.
比较美利克调整法（Meric）和激活器调整法（Activator）对急性下背痛（LBP）患者疼痛的即时影响。
采用随机对照临床试验比较两种调整法的相对有效性。
研究在俄克拉何马州塔尔萨市的一家私人脊椎按摩诊所进行。
对连续30例患有急性下背痛的确诊患者进行研究。16名受试者被随机分配到美利克组，14名被分配到激活器组。激活器组的平均（标准差）年龄为53.5（9.5）岁，美利克组为51.8（10.3）岁。
受试者接受对受累后关节进行的单次美利克或激活器调整。
在调整前和调整后立即，受试者在视觉模拟疼痛量表上对其疼痛强度进行评分。
激活器组的平均疼痛减轻程度为均值 = 22.2，标准差 = 21.7；美利克组均值 = 21.8，标准差 = 21.5。结果表明，在减轻急性下背痛方面，美利克调整法和激活器调整法之间没有显著差异（F = .005，自由度 = 2, 27，p = .941）。
本研究表明，在减轻疼痛方面，一种方法相对于另一种方法没有优势。
