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. Author manuscript; available in PMC: 2013 Aug 8.
Published in final edited form as: J Orthop Sports Phys Ther. 2013 Mar 18;43(6):368–378. doi: 10.2519/jospt.2013.4411

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