Table 1

Summarized results of normalized EMG values of VMO, VLL and VLO muscles during MVIC knee extension at 90° of flexion and MVIC hip abduction at 0° and 30° of abduction (N = 21) The results are shown as a percentage of MVIC at 50° of knee flexion in a seated position

Test procedure
VMO (%)
VLL (%)
VLO (%)

Hip abduction at 30°



Male
53.70
88.31
75.70
Female
96.07
119.61
103.98

Hip abduction at 0°



Male
69.05
110.62
90.25
female
87.09
100.13
92.30

MIVC at 90° of knee flexion



Male
144.91 c
115.31
146.72 d
female
165.97 b
141.30
162.61 a
     p ≤ 0,05




Letters demonstrate higher EMG activity of the same muscle in which there were statistically significantly differences between the three exercises

a p = 0,02196 High EMG activity MVIC knee extension at 90° of flexion vs MVIC hip abduction at 0° of abduction

b p = 0,008 High EMG activity MVIC knee extension at 90° of flexion vs MVIC hip abduction at 0° and 30° of abduction

c p = 0,000055 High EMG activity MVIC knee extension at 90° of flexion vs MVIC hip abduction at 0° and 30° of abduction

d p = 0,000761 High EMG activity MVIC knee extension at 90° of flexion vs MVIC hip abduction at 0° and 30° of abduction

Bevilaqua-Grossi et al. Journal of NeuroEngineering and Rehabilitation 2006 3:13   doi:10.1186/1743-0003-3-13