▁the ▁ro pe ▁and ▁the ▁bar ). ▁This ▁act ▁requires ▁a ▁great ▁deal ▁of ▁strength , ▁grace , ▁and ▁flex ibility . ▁The ▁tra pe ze ▁bar ▁is ▁weight ed ▁and ▁often ▁has ▁cable ▁inside ▁the ▁supporting ▁ro pes ▁for ▁extra ▁strength ▁to ▁with stand ▁the ▁dynamic ▁forces ▁of ▁the ▁swing . ▁ ▁F lying ▁tra pe ze ▁refers ▁to ▁a ▁tra pe ze ▁act ▁where ▁a ▁perform er , ▁or ▁" fly er ," ▁gra bs ▁the ▁tra pe ze ▁bar ▁and ▁j umps ▁off ▁a ▁high ▁platform , ▁or ▁ped est al ▁board , ▁so ▁that ▁gravity ▁creates ▁the ▁swing . ▁The ▁swing ' s ▁parts ▁are ▁the ▁" force ▁out " ▁( s ometimes ▁called ▁the ▁" cast ▁out ") ▁at ▁the ▁far ▁end ▁of ▁the ▁first ▁swing , ▁the ▁beat ▁back ▁and ▁the ▁rise ▁( also ▁known ▁as ▁" se ven ") ▁as ▁the ▁perform er ▁sw ings ▁back ▁above ▁the ▁ped est al ▁board , ▁and ▁then ▁the ▁trick ▁is ▁thrown ▁at ▁the ▁far ▁end ▁of ▁the ▁second ▁swing . ▁The ▁perform er ▁often ▁releases ▁the ▁bar ▁and ▁is ▁caught ▁by ▁another ▁perform er , ▁the ▁" catch er ," ▁who ▁hang s ▁by ▁his ▁or ▁her ▁kne es ▁on ▁another ▁tra pe ze , ▁or ▁sometimes ▁on ▁a ▁cr ad le , ▁which ▁can ▁be ▁either ▁station ary ▁or ▁also ▁swing ing . ▁People ▁of ▁any ▁size ▁are ▁able ▁to ▁execute ▁basic ▁tra pe ze ▁man eu vers . ▁F lying ▁tra pe ze ▁is ▁generally ▁done