Table 2. Moderators of handgrip strength reproducibility. Longitudinal Stability (T1, baseline; T2, second year; T3, third year; T4, fourth year).
|
|
Absolute
Error (kg) |
%CV |
MD (kg) |
| 1-year
interval |
T1
vs T2 |
3.00 (95%
CI: 2.92 – 3.09)* |
5.0 (95%
CI: 4.9, 5.2)* |
7.7 |
| T2
vs T3 |
3.09
(95% CI: 3.01-3.09)* |
5.1
(95% CI: 5.0, 5.3)* |
8.1 |
| T3
vs T4 |
3.04 (95%
CI: 2.96-3.13)* |
5.1 (95%
CI: 4.9, 5.2)* |
7.9 |
| 2-year
interval |
T1
vs T3 |
3.25
(95% CI: 3.16 – 3.34) |
5.4
(95% CI: 5.3, 5.6) |
8.3 |
| T2
vs T4 |
3.21 (95%
CI: 3.12-3.30) |
5.4 (95%
CI: 5.2, 5.5) |
8.3 |
| 3-year
interval |
T1
vs T4 |
3.29
(95% CI: 3.20 – 3.38) |
5.5
(95% CI: 5.4, 5.7) |
8.3 |
| Sex |
Male |
3.5 (95%
CI: 3.4, 3.5)* |
6.0 (95%
CI: 5.9 – 6.1)* |
8.9 |
| Female |
2.3
(95% CI: 2.2, 2.4) |
6.3
(95% CI: 6.1 – 6.5) |
5.9 |
| Handgrip
device |
Digital |
2.9 (95%
CI: 2.9, 3.0)* |
5.9 (95%
CI: 5.8 – 6.0)* |
7.8 |
| Analog |
3.8
(95% CI: 3.7, 4.0) |
6.5
(95% CI: 6.3 – 6.7) |
9.3 |
* indicates statistical significance; CV, coefficient of variation; MD, minimal difference.
