Table 2.
Test-retest reliability
| Muscle function | Side | Mean | Mean of difference | SD of difference | SEM | Relative SEM (%) | ICC | ICC 95%CI |
|---|---|---|---|---|---|---|---|---|
| Handgrip |
ND |
196.1 |
−8.4 |
28.9 |
20.4 |
10.4 |
0.949 |
[0.911 ; 0.971] |
| |
D |
211.5 |
−1.2 |
29.6 |
20.9 |
9.9 |
0.957 |
[0.926 ; 0.975] |
| Elbow flexion |
ND |
24.2 |
−0.3 |
3.4 |
2.4 |
10.0 |
0.969 |
[0.947 ; 0.981] |
| |
D |
25.7 |
−0.6 |
4.2 |
3.0 |
11.7 |
0.954 |
[0.923 ; 0.973] |
| Elbow extension |
ND |
19.0 |
−0.2 |
2.7 |
1.9 |
10.2 |
0.962 |
[0.936 ; 0.977] |
| |
D |
19.2 |
−0.2 |
3.1 |
2.2 |
11.2 |
0.950 |
[0.916 ; 0.970] |
| Knee flexion |
ND |
40.7 |
−1.5 |
7.3 |
5.2 |
12.7 |
0.945 |
[0.908 ; 0.968] |
| |
D |
41.9 |
−1.4 |
8.3 |
5.8 |
14.0 |
0.930 |
[0.884 ; 0.958] |
| Knee extension |
ND |
78.7 |
−5.3 |
17.1 |
12.1 |
15.4 |
0.945 |
[0.908 ; 0.968] |
| D | 84.5 | −6.0 | 17.6 | 12.4 | 14.7 | 0.926 | [0.870 ; 0.957] |
ND: non-dominant hand side; D: dominant hand side; SD: standard deviation; SEM: standard error of measurement; ICC: intraclass correlation coefficient; CI: confidence interval.
Data are provided in N for handgrip and Nm for the other muscle functions tested (n = 56 subjects).