Table 3. Paired samples tests of SEMG median frequency of the cervical muscles recorded showing mean and their standard error mean, lower and upper 95% confidence interval of the difference, t statistic (degree of freedom: 43) and significance.
| Direction | 
Mean (Hz) | 
SE means (Hz) | 
t | 
95 %CI | 
p | 
| E | 
35.5 | 
.43 | 
43 | 
34.6 – 36.4 | 
.001 | 
| RPO | 
33.3 | 
.39 | 
84.5 | 
32.6 – 34.1 | 
.001 | 
| RLF | 
60.7 | 
.55 | 
111.3 | 
59.6 – 61.8 | 
.001 | 
| RAO | 
60.1 | 
.49 | 
122.8 | 
59.1 – 61.1 | 
.001 | 
| LPO | 
32.8 | 
.32 | 
103.6 | 
32.1 – 33.4 | 
.001 | 
| LLF | 
28.1 | 
.25 | 
112.9 | 
27.6 – 28.6 | 
.001 | 
| LAO | 
27.7 | 
.19 | 
142.4 | 
27.3 – 28.1 | 
.001 | 
| F | 
27.6 | 
.17 | 
159.2 | 
26.9 – 27.6 | 
.001 | 
Bonferroni correction for eight situations set significance at less than 0.0018.