TABLE 2.
Descriptive statistics for self-report, biomechanical and imaging measures (n = 26)
| Mean (SD) | Min - Max | |
|---|---|---|
|
Self-report Pain and Function Scores |
||
| Visual analog scale (0–10) | 5.9 (1.7) | 4.0 – 10.0 |
| PRTEE (0–100) | 44.3 (18.8) | 15.5 – 87.0 |
| Biomechanical Measures | ||
| RFD at 30 ms (N/s) | 393 (239) | 48 – 806 |
| RFD at 50 ms (N/s) | 476 (284) | 48 – 891 |
| RFD at 100 ms (N/s) | 554 (316) | 44 – 1072 |
| Peak RFD (N/s) | 798 (376) | 151 – 1485 |
| Pain free grip strength – Baseline (N) | 208 (136) | 40 – 536 |
| Pain free grip strength - MAP(N) | 142 (67) | 29 – 275 |
| EMD (s) | 0.065 (0.031) | 0.04 – 0.16 |
| Tendon Pathology | ||
| MRI Signal Intensity (Grade: 0–3) (N)* | Grade 0 = 0; Grade 1 = 7; Grade 2 = 9; Grade 3 = 9; |
- |
| Ultrasound Hypoechogenecity (Grade: 0–3) (N)† |
Grade 0 = 7; Grade 1 = 7; Grade 2 = 8; Grade 3 = 1; |
- |
| Ultrasound Neovascularity (Grade: 0–3) (N)† |
Grade 0 = 12; Grade 1 = 7; Grade 2 = 4; Grade 3 = 0 |
- |
| Ultrasound Tendon Thickness (mm)† |
5.8 (0.8) | 4.2 – 7.1 |
1 participant declined MRI
3 participants did not complete ultrasound assessment
Abbreviations: EMD, electromechanical delay; MAP, multi-axial profile dynamometer; MRI, magnetic resonance imaging; PRTEE, Patient-rated Tennis Elbow Evaluation; RFD, rate of force development