my question i simply and regards the movement of RC iM 5.
the found 1 course said "..to lengthen the lats into this stretch..".
by my university knowledge and many NCBI resources seems that use static stretching movement before a strength set lets to a loss of strength during the following exercises.
the research i've ridden said that for a stretch session of 30 seconds the improvement of elongation ends after 3-4 minutes after the stretch. so i think that, if a set is performed after a reasonable amount of time , there is no problem (in theory).
but if the recovery time between stretch and next strength set is less, does the mobility end to static stretching and decrease the performance in the next set?