Article

Anterior Knee Pain (AKP) is considered as one of the most common, yet
misunderstood, knee pathologies. The aim of this study was to evaluate the
displacement area of the center of pressure, Ground Reaction Force (GRF), and the
electromyography activity of the hip and the quadriceps muscles in healthy and
AKP individuals during the step-up and step-down exercises. Both groups (Control
group and AKP group) were composed of 15 volunteers submitted to the exercises on
a force plate. The AKP group presented greater displacement area of the center of
pressure for all the situations evaluated than the Control group (p<0.05), as
well as a lesser magnitude of the GRF during the step-down exercise. The AKP
group presented lower electromyography activity than the Control group in all
situations evaluated. AKP individuals do not have muscle imbalances; they present
a lower electromyography activity of the stabilizing muscles of the patella and
hip and show greater instability in activities such as step up and down compared
to normal subjects.
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Langue : ANGLAIS