Table 1 PERFECT scheme

P

“Power”: evaluation of a maximal voluntary contraction, graduated by MOS scale

E

“Endurance”: time (in seconds) that participant can sustain the contraction with the same degree obtained during the “P” item assessment, considering the maximal time of 10 s

R

“Repetitions”: repetition of the “E” item task, performing a 4-s rest between each repetition. The largest number of repetitions is 10

F

“Fast contractions”: assessment of the largest number of vigorous and quick contractions (“contracting and relaxing”) until fatigue performed by the participants, with the same strength degree graded in “P” item. Limited to 10 PFM contractions.

ECT

“Every Contraction Timed”: the time and sequence of events mentioned above will be timed and recorded