Table 3.
Structural mechanical properties (mean ± standard deviations)
| Age (months) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 6 | ANOVA | ||||||
| Bending Stiffness (N/mm) | TR | 40.30 | (6.68) | 56.49 | (11.01) | 64.04 | (15.12) | 75.37 | (19.01) | a |
| WT | 28.79 | (13.79) | 56.94 | (12.85) | 61.74 | (10.90) | 68.16 | (18.51) | ||
| Maximum moment (N) | TR | 15.91* | (2.84) | 40.15 | (5.50) | 44.19 | (6.57) | 55.87 | (8.08) | a,b |
| WT | 12.6 | (6.07) | 34.36 | (11.53) | 41.64 | (6.22) | 54.04 | (8.78) | ||
| Yield moment (N) | TR | 12.06* | (3.01) | 31.07* | (3.92) | 36.04 | (5.89) | 50.42 | (6.86) | a,b |
| WT | 9.08 | (4.94) | 24.33 | (9.86) | 34.27 | (4.62) | 43.26 | (10.99) | ||
| Total Energy (mJ) | TR | 3.26* | (1.00) | 6.83* | (2.51) | 5.29 | (2.40) | 5.85 | (2.63) | a,b |
| WT | 5.69 | (3.24) | 9.39 | (1.88) | 4.69 | (1.25) | 6.74 | (1.80) | ||
| Energy to Yield (mJ) | TR | 0.49 | (.14) | 1.52* | (.55) | 1.56 | (.64) | 2.47 | (.64) | a,b |
| WT | 0.39 | (.27) | 0.97 | (.39) | 1.63 | (.53) | 1.88 | (.56) | ||
| Post-yield Energy (mJ) | TR | 2.77* | (.95) | 5.31** | (2.15) | 3.73 | (2.15) | 3.38 | (2.83) | a,b,c |
| WT | 5.29 | (3.13) | 8.42 | (1.91) | 3.05 | (1.56) | 4.86 | (1.69) | ||
| Ultimate Displacement (mm) | TR | 0.55*** | (.16) | 0.64*** | (.21) | 0.48 | (.15) | 0.47 | (.12) | a,b,c |
| WT | 1.34 | (.52) | 0.94 | (.20) | 0.46 | (.11) | 0.55 | (.16) | ||
| Pre-yield Displacement (mm) | TR | 0.14 | (.02) | 0.26 | (.09) | 0.22 | (.05) | 0.28 | (.06) | a,b,c |
| WT | 0.14 | (.05) | 0.18 | (.03) | 0.23 | (.06) | 0.24 | (.05) | ||
| Post-yield Displacement (mm) | TR | 0.41*** | (.16) | 0.38*** | (.15) | 0.26 | (.13) | 0.19 | (.15) | a,b,c |
| WT | 1.20 | (.53) | 0.76 | (.19) | 0.23 | (.14) | 0.31 | (.14) | ||
*
p < 0.05,
**
p < 0.01,
***
p < 0.001, vs. WT at same age
a
Two-way ANOVA significant for age (p<0.05)
b
Two-way ANOVA significant for group (p<0.05)
c
Two-way ANOVA significant for the age-by-group interaction (p<0.05)
TR = Transgenic, WT = Wild type