The effects of knee joint effusion on quadriceps electromyography during jogging.
نویسندگان
چکیده
To investigate and describe the influence of intra-articular effusion on knee joint kinematics and electromyographic (EMG) profiles during jogging. Thirteen individuals underwent a 20 cc 0.9% saline insufflation of the knee joint capsule and completed 8 jogging trials. Stance phase, sagittal plane knee joint kinematics and thigh muscular EMG profiles were compared pre- and post-insufflation utilizing a paired t-test ( = 0.05). Mild knee effusion caused a reduction in vastus medialis (p = 0.005) and lateralis (p = 0.006) EMG activity. The rectus femoris, biceps femoris and medial hamstring muscles did not exhibit changes due to this protocol. There were no changes in the sagittal plane knee joint kinematic pattern. Twenty cc effusion can cause quadriceps inhibition in the vastus medialis and the vastus lateralis in otherwise healthy individuals during jogging. This study provides baseline data for the effects of mild knee joint effusion on thigh musculature during jogging. Key Points20 cc of knee effusion can cause vastus medialis and lateralis inhibition as noted by decreases in EMG amplitude.This effusion does not appear to alter sagittal plane knee joint kinematics during jogging.This finding if different from previous work investigating knee joint kinematic changes during a less dynamic activity (gait) with 20 cc of effusion.
منابع مشابه
An investigation into the effects of a simulated effusion in healthy subjects on knee kinematics during jogging and running.
BACKGROUND Knee joint effusion can lead to changes in the activation of surrounding musculature and result in delayed return to baseline daily and sporting activity following injury. However, the effects of an isolated knee joint effusion on control of movement during cyclical activities such as gait are poorly understood. METHODS Knee angular displacement and velocity was measured during tre...
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ورودعنوان ژورنال:
- Journal of sports science & medicine
دوره 4 1 شماره
صفحات -
تاریخ انتشار 2005