intruduction: pattellofemoral pain syndrome (p.f.p.s) is the most common problem in knee joint. various authors have indicated that imbalance of muscle activity between vastus medialis oblique (vmo) and vastus lateralis (vl) might lead to p.f.p.s. the objective is to determine the effect of patellar taping on vmo/vl myoelectric activity ratio during maximal isometric contraction in open and clo...

[Purpose] The purpose of this study was to analyze the effects of different shoe types on lower extremity muscle activity in healthy young women by using electromyography. [Subjects and Methods] Fifteen healthy young women in their 20s were included in this single-group repeated measures study. The subjects were divided into three groups: Converse sneakers, rain boots, and combat boots. The sub...

[Purpose] This report describes an unusual incidental finding during ultrasound investigation of the vastus medialis muscle. Volunteers underwent ultrasound scanning as part of an on-going investigation into the architecture of the vastus medialis muscle. [Subjects and Methods] The distal thighs of forty-one subjects were scanned using the Philips iU22 US system. An unusual muscle morphology wa...

OBJECTIVE To investigate a possible ankle-knee synergy, experiments with normal subjects were performed to compare changes of the quadriceps motor pool excitability due to ankle position and effort. METHODS Vastus medialis H reflex amplitude was examined during ankle isometric contractions conditioned by different ankle positions (dorsiflexion, neutral, and plantarfiexion) with or without vol...