Table 2.
Reliability in tensiomyography parameters for Vastus Medialis muscle (n = 36).
| VM | Electrode 3.2 cm | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M ± SD | Stimulus length 0.2 | M ± SD | Stimulus length 0.5 | M ± SD | Stimulus length 1 | |||||||||||||
| ICC CI 95% | CV% | SEM SEM% | MDC | MDC% | ICC CI 95% | CV% | SEM SEM% | MDC | MDC% | ICC CI 95% | CV% | SEM SEM% | MDC | MDC% | ||||
| Dm (mm) | 8.18 ± 1.50 | 0.97 (0.95-0.98) | 3.0 | 0.24 ± 2.95 | 0.67 | 8.22 | 8.50 ± 1.51 | 0.97 (0.95-0.98) | 3.2 | 0.26 ± 3.10 | 0.73 | 8.62 | 8.60 ± 1.36 | 0.97 (0.95-0.98) | 3.1 | 0.23 ± 2.74 | 0.65 | 7.62 |
| Tc (ms) | 22.52 ± 2.10 | 0.95 (0.91-0.97) | 2.2 | 0.49 ± 2.19 | 1.37 | 6.09 | 22.17 ± 2.04 | 0.95 (0.91-0.97) | 2.3 | 0.47 ± 2.11 | 1.30 | 5.87 | 22.21 ± 1.94 | 0.95 (0.90-0.97) | 2.2 | 0.43 ± 1.97 | 1.21 | 5.46 |
| Td (ms) | 22.38 ± 1.25 | 0.85 (0.75-0.91) | 2.3 | 0.50 ± 2.23 | 1.39 | 6.21 | 22.23 ± 1.15 | 0.88 (0.81-0.94) | 1.9 | 0.39 ± 1.77 | 1.09 | 4.92 | 22.24 ± 1.21 | 0.87 (0.79-0.93) | 2.2 | 0.45 ± 2.02 | 1.25 | 5.62 |
| Tr (ms) | 67.10 ± 39.49 | 0.76 (0.62-0.86) | 23.1 | 21.25 ± 31.66 | 58.92 | 87.80 | 75.95 ± 47.31 | 0.85 (0.75-0.91) | 28.7 | 19.77 ± 26.03 | 54.81 | 72.16 | 71.09 ± 43.61 | 0.76 (0.62-0.86) | 36.6 | 23.69 ± 33.32 | 65.66 | 92.37 |
| Ts (ms) | 168.60 ± 28.60 | 0.92 (0.87-0.96) | 4.4 | 8.10 ± 4.80 | 22.46 | 13.32 | 180.5 ± 27.96 | 0.91 (0.86-0.95) | 6.2 | 8.29 ± 4.59 | 23.00 | 12.74 | 175.6 ± 26.84 | 0.90 (0.83-0.94) | 5.4 | 9.38 ± 5.34 | 26.01 | 14.81 |
| Electrode 5 cm | ||||||||||||||||||
| Dm (mm) | 8.65 ± 1.34 | 0.97 (0.94-0.98) | 3.0 | 0.25 ± 2.89 | 0.69 | 8.04 | 8.67 ± 1.36 | 0.96 (0.93-0.98) | 2.9 | 0.31 ± 3.65 | 0.88 | 10.16 | 8.67 ± 1.30 | 0.95 (0.91-0.97) | 3.8 | 0.26 ± 3.06 | 0.73 | 8.51 |
| Tc (ms) | 21.90 ± 1.98 | 0.97 (0.95-0.98) | 1.6 | 0.33 ± 1.53 | 0.93 | 4.25 | 21.50 ± 1.97 | 0.95 (0.92-0.97) | 2.0 | 0.43 ± 2.01 | 1.20 | 5.60 | 21.77 ± 2.01 | 0.95 (0.91-0.97) | 2.4 | 0.47 ± 2.16 | 1.30 | 5.99 |
| Td (ms) | 22.21 ± 1.22 | 0.93 (0.88-0.96) | 1.6 | 0.33 ± 1.49 | 0.92 | 4.15 | 22.08 ± 1.22 | 0.90 (0.83-0.94) | 1.6 | 0.40 ± 1.84 | 1.12 | 5.11 | 22.06 ± 1.09 | 0.88 (0.81-0.93) | 1.7 | 0.39 ± 1.78 | 1.09 | 4.96 |
| Tr (ms) | 81.93 ± 47.42 | 0.85 (0.76-0.91) | 38.1 | 22.69 ± 27.69 | 62.90 | 76.77 | 75.37 ± 48.70 | 0.89 (0.81-0.94) | 25.8 | 19.62 ± 26.03 | 54.38 | 72.15 | 62.76 ± 40.17 | 0.80 (0.68-0.88) | 34.1 | 21.77 ± 34.68 | 60.34 | 96.15 |
| Ts (ms) | 175.41 ± 28.64 | 0.88 (0.81-0.93) | 6.6 | 10.61 ± 6.04 | 29.42 | 16.77 | 182.65 ± 30.24 | 0.89 (0.81-0.94) | 5.5 | 8.36 ± 4.58 | 23.19 | 12.69 | 182.58 ± 28.43 | 0.90 (0.84-0.95) | 5.7 | 9.09 ± 4.98 | 25.20 | 13.80 |
Data are mean ± SD. VM: Vastus Medialis; Dm: displacement; Tc: contraction time; Td: delay time; Tr: half-relaxation time; Ts: sustain time; ms: milliseconds. CV: coefficient of variation; cm: centimeters; ICC: intraclass correlation coefficient; CI: confidence interval; SEM standard error of measurement; MDC: minimum detectable change.