Vassilios G Vardaxis

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The purpose of this study was to examine the accuracy of the Runs Test, Reverse Arrangements Test, and modified Reverse Arrangements Test for assessing stationarity of surface electromyographic (EMG) signals. Five stationary signals were generated by custom programs written with LabVIEW programming software. These signals consisted of sine waves, sums of(More)
OBJECTIVES Considerable information exists concerning the differences in motoneuron pool (MP) excitability between young and elderly subjects. A recent study demonstrated decreased heteronymous Ia facilitation with aging, suggesting increased presynaptic inhibition (PI) with increasing age as a mechanism for this change (Morita et al., Exp Brain Res 104(More)
Despite an increase in women sports participants and recognition of gender differences in injury patterns (e.g., knee), few normative strength data exist beyond hamstrings and quadriceps measures. This study had 2 purposes: to assess the lower-extremity strength of women (W) and men (M) basketball players who were 9-22 years old, and to determine which(More)
Tape has traditionally been used to support the ankle during activity. More recently, commercial ankle braces have been worn as an alternative. The cumulative information on the effects of taped versus braced ankle support or interbrace comparisons is inconclusive. With few exceptions, ankle brace studies have collected data soon after support conditions(More)
BACKGROUND The Lisfranc ligament plays an integral role in providing stability to the midfoot. Variable clinical presentations and radiographic findings make injuries to the Lisfranc ligament notoriously difficult to diagnose. Currently, radiographic evaluation is the mainstay in imaging such injuries; however, ultrasound has been suggested as a viable(More)
Limitation in cervical spine range of motion (ROM) is one criterion for diagnosis of cervicogenic headaches (CHs). The flexion-rotation test, when performed passively (FRT-P), has been shown to be a useful test in diagnosis of CH. Few investigations have examined the flexion-rotation test when performed actively (FRT-A) by the individual, and no studies(More)
Study Design Controlled laboratory study. Background Plantar heel pain is one of the most common foot and ankle conditions seen in clinical practice, and many individuals continue to have persisting or recurrent pain after treatment. Impaired foot plantar flexor muscle performance is a factor that may contribute to limited treatment success, but reliable(More)
Bilateral symmetry of the ligaments is a common assumption used as an intrasubject control for clinical diagnosis. The present study investigated the bilateral symmetry of the dorsal Lisfranc ligament (dLL) using ultrasound. Data were acquired from 50 asymptomatic subjects in a seated position at a loaded calf raise machine equipped with a force plate. The(More)
BACKGROUND The low-Dye technique serves to limit hindfoot pronation and medial arch collapse. Few studies exist that investigate the effects on medial arch deformation from a biomechanical perspective. METHODS Kinematic data was collected using a Motion Analysis System. Foot function of 21 healthy adults was assessed during the stance phase of gait.(More)
Objectives: Considerable information exists concerning the differences in motoneuron pool (MP) excitability between young and elderly subjects. A recent study demonstrated decreased heteronymous Ia facilitation with aging, suggesting increased presynaptic inhibition (PI) with increasing age as a mechanism for this change (Morita et al., Exp Brain Res 104(More)
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