Yiu-ming Wong

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OBJECTIVE Patellar malalignment is a major cause of patellofemoral pain syndrome (PFPS), but the relationship between clinical symptoms and changes in patellar position and knee muscle strength has not been confirmed. This study examined the effect of weight training on hip and knee muscle strength, patellofemoral joint contact area, and patellar tilt on(More)
  • Yiu-ming Wong
  • Physical therapy in sport : official journal of…
  • 2009
PURPOSE AND METHOD In this literature review, relevant studies on electromyographic (EMG) onset timing of vastus medialis obliquus and vastus lateralis in people with and without patellofemoral pain syndrome (PFPS) were reviewed and discussed. CONCLUSION Studies had used diverse EMG signal processing and testing protocols, also only a half of their(More)
Concomitant hip adduction during squatting has long been advocated as a rehabilitative method to preferentially activate the VMO in persons with patellofemoral pain. This practice however has been based on research using surface electrodes which are prone to crosstalk from neighboring muscles (i.e., adductor magnus). This study sought to determine whether(More)
CONTEXT Underconditioned patellar stabilizing muscles could be a predisposing factor for patellar instability. OBJECTIVE To examine the effect of 2 modes of weight training on the size of the vastus medialis obliquus (VMO), the resting position and passive mobility of the patella, and the strength of the knee extensor muscles. DESIGN Prospective(More)
The present study examined and compared two modes of weight training (bodybuilding and power-lifting) on the surface EMG of vasti muscles, knee joint position sense and isometric knee extension force in 48 able-bodied subjects. Subjects were randomly allocated into either a moderate loading and repetitions (bodybuilding) training or a high loading and low(More)
I read a recent article by Wu et al that evaluated acupuncture-induced brain responses with real acupoint as compared to sham acupoint in asymptomatic children using functional magnetic resonance imaging (fMRI). Based on 8 participants’ data, the article stated that the needles inserted into the real and sham acupoints of the dorsal foot led to different(More)
PURPOSE Identification of the onset of muscle contraction with EMG signal amplitude double of the baseline value (DP-P) has been recently reported for determining the temporal parameters of muscular activity. Due to its convenience, it is suitable for clinical application. However, there is a lack of report on the reliability and comparability of this(More)
This study examined the correlations between patellar mobility and geometry of the patella and femoral condyle. Using a custom designed patellar gliding instrument, the lateral mobility of patella in 17 able-bodied subjects was measured and these measurements were compared with the relative patellar tendon length and the inclination of lateral femoral(More)