Table 2. Extensor muscle EMG results (N=40).

Position	Mean ± SD
1*	0.39 ± 0.18
2	0.35 ± 0.17
3	0.35 ± 0.16
4	0.34 ± 0.16
5	0.32 ± 0.17

* p<0.05, each position was compared to the fourth position.