Quantitative Mechanical Properties of the Relaxed Biceps and Triceps Brachii Muscles in Patients with Subacute Stroke: A Reliability Study of the Myoton-3 Myometer
Table 3
Test-retest reliability of myotonometric measurements of the biceps and tricpes brachii muscles.
Muscle
Variable
ICC (95% CI)
SEM (SEM%)
MDC90 (MDC90%)
Affected
Unaffected
Affected
Unaffected
Affected
Unaffected
Biceps brachii
Tone (Hz)
0.96 (0.86–0.99)
0.72 (0.25–0.92)
0.34 (2.93%)
0.77 (6.45%)
0.79 (6.82%)
1.79 (15.01%)
Elasticity
0.85 (0.54–0.96)
0.94 (0.80–0.98)
0.12 (6.92%)
0.09 (6.04%)
0.27 (16.26%)
0.20 (13.42%)
Stiffness (N/m)
0.91 (0.70–0.97)
0.87 (0.59–0.96)
8.81 (4.00%)
10.34 (4.67%)
20.52 (9.31%)
24.09 (10.88%)
Triceps brachii
Tone (Hz)
0.90 (0.68–0.97)
0.89 (0.65–0.97)
0.70 (6.36%)
0.92 (8.04%)
1.63 (14.83%)
2.14 (18.67%)
Elasticity
0.93 (0.76–0.98)
0.93 (0.76–0.98)
0.13 (7.26%)
0.10 (5.95%)
0.30 (16.75%)
0.23 (13.69%)
Stiffness (N/m)
0.79 (0.40–0.94)
0.79 (0.40–0.94)
12.69 (6.46%)
20.44 (10.72%)
29.56 (15.05%)
47.62 (24.98%)
ICC: intraclass correlation coefficient; CI: confidence interval; SEM: standard error of measurement; SEM%: SEM divided by the mean of all measurements from the two sessions and multiplied by 100%; MDC: minimal detectable change; MDC%: MDC divided by the mean of all measurements from the two sessions and multiplied by 100%.
