Table 3.
Variable | Baseline (wk 0) | Posttraining (wk 8) | Detraining 1 (wk 10) | Detraining 2 (wk 12) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MTCS | MTCL | MTCX | CON | MTCS | MTCL | MTCX | CON | MTCS | MTCL | MTCX | CON | MTCS | MTCL | MTCX | CON | |
PT length (mm) | 52.3 ± 4.7 | 53.1 ± 5.3 | 50.5 ± 5.1 | 49.8 ± 4.4 | 52.0 ± 4.4 | 53.9 ± 5.4 | 50.8 ± 4.9 | 49.2 ± 5.1 | 52.1 ± 4.5 | 54.1 ± 5.4 | 51.3 ± 5.1 | 49.0 ± 4.9 | 52.0 ± 4.4 | 53.8 ± 5.0 | 50.9 ± 4.7 | 50.5 ± 5.6 |
PTCSA (mm2) | ||||||||||||||||
25% | 67 ± 11 | 69 ± 14 | 71 ± 11 | 70 ± 8 | 69 ± 12 | 76 ± 18 | 74 ± 15 | 71 ± 8 | 67 ± 14 | 74 ± 18 | 75 ± 12 | 70 ± 8 | 68 ± 8 | 73 ± 16 | 70 ± 14 | 71 ± 10 |
50% | 70 ± 9 | 78 ± 13 | 69 ± 13 | 73 ± 10 | 74 ± 15 | 83 ± 13 | 75 ± 16 | 72 ± 12 | 74 ± 10 | 82 ± 13 | 73 ± 11 | 71 ± 13 | 71 ± 10 | 82 ± 12 | 73 ± 15 | 72 ± 12 |
75% | 74 ± 18 | 69 ± 15 | 73 ± 15 | 71 ± 12 | 77 ± 15 | 71 ± 25 | 78 ± 17 | 71 ± 12 | 75 ± 17 | 77 ± 13 | 77 ± 16 | 72 ± 11 | 73 ± 16 | 77 ± 13 | 75 ± 15 | 71 ± 15 |
Max flexion RMS-EMG (V) | 0.55 ± 0.30 | 0.50 ± 0.23 | 0.69 ± 0.42 | 0.72 ± 0.35 | 0.48 ± 0.24 | 0.47 ± 0.23 | 0.57 ± 0.18 | 0.70 ± 0.38 | 0.47 ± 0.37 | 0.35 ± 0.25 | 0.52 ± 0.30 | 0.70 ± 0.47 | 0.48 ± 0.31 | 0.43 ± 0.23 | 0.67 ± 0.33 | 0.73 ± 0.38 |
Cocontraction RMS-EMG (mV) | 0.046 ± 0.024 | 0.058 ± 0.050 | 0.044 ± 0.015 | 0.052 ± 0.019 | 0.050 ± 0.037 | 0.045 ± 0.040 | 0.046 ± 0.030 | 0.047 ± 0.018 | 0.047 ± 0.028 | 0.043 ± 0.026 | 0.054 ± 0.027 | 0.049 ± 0.020 | 0.045 ± 0.032 | 0.046 ± 0.035 | 0.054 ± 0.032 | 0.052 ± 0.014 |
PT stiffness (N mm−1) | 916 ± 441 | 837 ± 379 | 765 ± 242 | 997 ± 258 | 1221 ± 5941 | 1124 ± 4711 | 1167 ± 3531 | 1014 ± 218 | 1115 ± 5301 | 1206 ± 5031 | 1070 ± 3461 | 1024 ± 222 | 1024 ± 439 | 1043 ± 4281 | 989 ± 3441 | 1011 ± 231 |
Δ Relative stiffness (%) | – | – | – | – | 35 ± 61 | 43 ± 111,2 | 50 ± 181,2 | 2 ± 3 | 23 ± 121 | 54 ± 161,2 | 43 ± 171,2 | 3 ± 3 | 14 ± 8 | 35 ± 141,2 | 32 ± 111,2 | 2 ± 3 |
Δ Relative stiffness 2kN (%) | – | – | – | – | 38 ± 191 | 43 ± 141 | 51 ± 301 | 1 ± 3 | 17 ± 181 | 51 ± 191,2 | 31 ± 171,2 | 2 ± 3 | 14 ± 14 | 33 ± 161,2 | 38 ± 181,2 | 1 ± 3 |
Young's modulus (GPa) | 0.83 ± 0.09 | 0.74 ± 0.09 | 0.78 ± 0.10 | 0.89 ± 0.14 | 1.10 ± 0.12 | 0.99 ± 0.11 | 1.15 ± 0.11 | 0.92 ± 0.11 | 1.02 ± 0.101 | 1.03 ± 0.11 | 1.11 ± 0.12 | 0.93 ± 0.14 | 0.91 ± 0.05 | 0.91 ± 0.13 | 1.02 ± 0.14 | 0.95 ± 0.16 |
Δ Relative Young's modulus (%) | – | – | – | – | 36 ± 71 | 33 ± 51 | 48 ± 61,2 | 3 ± 3 | 23 ± 71 | 40 ± 51,2 | 42 ± 121,2 | 3 ± 5 | 13 ± 21 | 24 ± 131,2 | 31 ± 131,2 | 6 ± 6 |
Values are mean ± SD. PT, patella tendon.
Significantly different from baseline (P < 0.05).
Significantly different to MTCS (P < 0.05).