I would be very glad if someone could help me with these questions:
1) Has there been any repeatability / reproducability on surface EMG of upper trapezius (preferably during abduction)?
2) Where is the motor point in upper trapezius concidered to be (references please)?
3) Upper trapezius could be firmly taped, and decreased EMG activity can be detected. Could one possibility for the decreased EMG activity be that the blood flow possibly decreases?

Tron Vikhammer

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