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Table 3 Pre-injection PPT values, and pooled mean used for comparison with post-injection PPT

From: Chronic whiplash and central sensitization; an evaluation of the role of a myofascial trigger points in pain modulation

PPT (lbs) Pre-injection 1
(mean, SD)
Pre-injection 2
(mean, SD)
p-value
(1 vs. 2)
Pooled mean
(mean, SD)
Infraspinatus 4.1, 2.1 3.8, 1.9 0.111 4.0, 2.0
Wrist Ext 4.3, 2.9 4.3, 2.6 0.986 4.3, 2.7
Tib Ant 8.2, 4.3 7.3, 3.9 0.003 7.7, 4.1