Table 2.
Changes in the Mechanical Heterogeneity Index and Pressure-Pain Threshold for Active Myofascial Trigger Points From Baseline to the 8-Week Follow-up After a 3-Week Course of Dry Needling
| MTrP Status at 8 wk | Age, y | n | Male | Female | Variable | Baseline Mean (95% CI) | 8-wk Follow-up Mean (95% CI) | P |
|---|---|---|---|---|---|---|---|---|
| All treated | 37 ± 12 | 30 | 13 | 17 | MHI | 0.16 (0.14–0.19) | 0.11 (0.09–0.13) | <.001 |
| PPT | 7.30 (6.05–8.55) | 8.60 (7.35–9.85) | .036 | |||||
| Responded (active MTrP to latent MTrP or normal) | 37 ± 12 | 22 | 11 | 11 | MHI | 0.16 (0.13–0.19) | 0.10 (0.09–0.12) | <.001 |
| PPT | 7.3 (6.26–8.34) | 8.90 (7.81–9.99) | .027 | |||||
| Did not respond | 38 ± 14 | 8 | 2 | 6 | MHI | 0.18 (0.14–0.23) | 0.12 (0.09–0.17) | .093 |
| PPT | 7.30 (3.35–11.25) | 7.50 (3.83–11.17) | .84 | |||||
| Responded but did not resolve (active MTrP to latent MTrP) | 33 ± 12 | 12 | 6 | 6 | MHI | 0.17 (0.14–0.21) | 0.13 (0.10–0.16) | .006 |
| PPT | 6.70 (5.68–7.72) | 8.00 (6.59–9.41) | .15 | |||||
| Resolved (active MTrP to normal) | 41 ± 11 | 10 | 5 | 5 | MHI | 0.14 (0.11–0.18) | 0.08 (0.06–0.10) | <.001 |
| PPT | 7.9 (5.98–9.82) | 10 (8.45–11.55) | .11 |
Notations are as in Table 1.