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. 2013 Apr 2;135(4):0410051–0410057. doi: 10.1115/1.4023700

Table 6.

Coefficients of determination and associated p-values for comparisons of measured and predicted values of |E*| and tanδ in aged (P300 and P570) and injured (three and six weeks post-injury at P120) tendons tested at 4%, 6%, and 8% with f = 10 Hz. In all groups, correlations were significant for both parameters at all strain levels.


Evaluation of Model Predictions at 10 Hz

P300 (uninjured)

P570 (uninjured)
Parameter Strain R 2 p Parameter Strain R 2 p
|E*| 4% 0.89 < 0.0001 |E*| 4% 0.97 < 0.0001
6% 0.94 < 0.0001 6% 0.89 < 0.0001
8% 0.84 < 0.0001 8% 0.54 0.003
tanδ 4% 0.57 0.005 tanδ 4% 0.91 < 0.0001
6% 0.56 0.005 6% 0.86 < 0.0001
8% 0.41 0.03 8% 0.51 0.004

Three weeks post-injury

Six weeks post-injury
Parameter Strain R 2 p Parameter Strain R 2 p
|E*| 4% 0.92 < 0.0001 |E*| 4% 0.85 < 0.0001
6% 0.82 < 0.0001 6% 0.90 < 0.0001
8% 0.50 0.003 8% 0.68 0.0003
tanδ 4% 0.92 < 0.0001 tanδ 4% 0.72 < 0.0001
6% 0.94 < 0.0001 6% 0.86 < 0.0001
8% 0.65 0.0003 8% 0.66 0.0004