Comparison of Electromyographyc activity of Selected Muscles during Level Ground Walking at People With and Without Knock Knees
Abstract
This pilot study compares EMG activity of chosen muscles of lower limb during ground level walking between probands witch knock knees and ground of people without this issue. The experiment involved 10 probands, 7 women and 3 men, in age from 21 to 27.
To determine who belongs to which group were each proband investigate by intermalleolar distance. By surface EMG were measured these muscles on both legs of each person: tibialis anterior muscle, gastrocnemius lateralis muscle, vastus medialis muscle, adductor magnus muscle, semimembranosus muscle, tensor fasciae latae muscle during ground level walking on treadmill of constant speed 3km/h.
Normalized average values of 10 strides and average values of stance phase of 10 strides were evaluated and then were results of probands from both groups statistically compared. The result showed that activity of gastrocnemius lateralis and tensor fasciae latae muscle was increased in group of probands with knock knees compared to the second group during gait in both evaluating parameters.
Conclusion of the study reveals an option of purposeful psychiotherapeutic intervention at patients with knock knees.