Article

Possible delays in pre-activation or deficiencies in the activity of the dynamic
muscle stabilizers of the knee and hip joints are the most common causes of the
patellofemoral pain syndrome (PFPS).
The aim of the study was to compare
kinematic variables and electromyographic activity of the vastus lateralis,
biceps femoris, gluteus maximus and gluteus medius muscles between patients with
PFPS and health subjects during the single leg triple hop test (SLTHT). This
study included 14 female with PFPS (PFPS group) and 14 female healthy with no
history of knee pain (Healthy group). Kinematic and EMG data ware collected
through participants performed a single session of the SLTHT. The PFPS group
exhibited a significant increase (p<0.05) in the EMG activity of the biceps
femoris and vastus lateralis muscles, when compared with the healthy group in
pre-activity and during the stance phase. This same result was also found for the
vastus lateralis muscle (p<0.05) when analyzing the EMG activity during the
eccentric phase of the stance phase. In kinematic analysis, no significant
differences were found between the groups. These results indicate that biceps
femoris and vastus lateralis muscles mainly during the pre-activation phase and
stance phases of the SLTHT are more active in PFPS group among healthy group.
CI - Copyright (c) 2016 Elsevier B.V. All rights reserved.

Langue : ANGLAIS