Well...you don't have to be an expert.It's not quantum mechanics.Every manual states that rectifies the raw EMG with the RMS method.
We all learned at school that the RMS is the 70% of the positive peak value.
No...you didn't meausure any "total or overall muscle activity/ force output".You also did NOT
measure the peak.You meusured the RMS(70% of the positive peak).
The Total Muscle Activation is meusured by the integrated EMG which is the area below the EMG curve.
All these "explanations/scenarios"(
) are the effect of the peak force.