Table 1: SEMG mean amplitude [% MVC] in naturally chosen and corrected shoulder positions for the sum of all climbing postures. SEMG is related to maximal voluntary contraction (MVC).
| Muscle |
Naturally chosen Shoulder position (% MVC) |
Corrected shoulder position (% MVC) |
p value |
ωp2
|
| M.trapezius - superior part |
4.1 ± 2.7 |
4.5 ± 2.3 |
0.547 |
-0.11 |
| M.trapezius - middle part |
18.4 ± 8.9 |
35.3 ± 11.8 |
0.015 |
0.67 |
| M.trapezius - inferior part |
30.1 ± 13.8 |
61.7 ± 15.4 |
0.004 |
0.79 |
| M. serratus anterior |
6.1 ± 3.8 |
9.1 ± 3.0 |
0.198 |
0.17 |
| M. sternocleidomastoideus |
3.8 ± 1 |
6.5 ± 1.0 |
0.014 |
0.68 |
| M. pectoralis major |
7.2 ± 4.2 |
10.8 ± 5.5 |
0.076 |
0.40 |
SEMG: surface electromyography; MVC: maximal voluntary contraction; naturally chosen and corrected positions values are reported as mean ± standard deviation.