Table 3.
Assessment of baseline and concurrent pressure pain thresholds (PPT) during cold water immersion to determine the magnitude of endogenous pain inhibition (CPM) at the forearm and trapezius among African American (AA), Caucasian (CA), or Asian/Pacific Islander (A/PI) cohorts.
| Variables | Ethnic Group | Mean (SD) | F |
|---|---|---|---|
| Forearm | |||
| Baseline PPT | CA | 339.03 (180.45) | 0.40 |
| AA | 326.76 (204.21) | ||
| A/PI | 326.45 (181.70) | ||
| CPT Trials PPT | CA | 376.47 (190.23) | 1.05 |
| AA | 383.63 (218.73) | ||
| A/PI | 354.44 (191.80) | ||
| CPM | CA | 35.35 (96.93) | 0.96 |
| AA | 56.86 (89.58) | ||
| A/PI | 28.00 (82.79) | ||
| Trapezius | |||
| Baseline PPT | CA | 384.08 (153.42) | 0.04 |
| AA | 354.26 (232.38) | ||
| A/PI | 385.57 (186.28) | ||
| CPT Trials PPT | CA | 440.58 (184.44) | 0.36 |
| AA | 413.32 (256.54) | ||
| A/PI | 454.61 (281.51) | ||
| CPM | CA | 55.91 (109.02) | 0.65 |
| AA | 59.05 (100.49) | ||
| A/PI | 69.04 (141.62) | ||
| Forearm & Trapezius | |||
| Overall CPM* | CA | 45.63 (90.86) | 0.20 |
| AA | 58.00 (80.41) | ||
| A/PI | 48.54 (94.78) |
Note: All PPT scores are presented as kilopascals (kPa). The magnitude of endogenous pain inhibition (CPM) represents a difference score (CPT trials - baseline PPT) at each site.
*
Overall CPM is average of site specific CPM at forearm and trapezius.