er go " ▁( short ▁for ▁erg ometer ). ▁ ▁Ski Er g ▁▁ ▁In ▁June ▁ 2 0 0 9 , ▁Con cept 2 ▁introduced ▁their ▁new est ▁product , ▁the ▁Ski Er g . ▁The ▁Ski Er g ▁is ▁a ▁ski ▁erg ometer ▁that ▁helps ▁build ▁strength ▁and ▁end urance ▁specific ▁to ▁Nord ic ▁ski ing . ▁ ▁The ▁Ski Er g ▁uses ▁the ▁same ▁mechanical ▁concept ▁that ▁the ▁company ' s ▁ind oor ▁row ers ▁do , ▁but ▁the ▁user ▁is ▁in ▁a ▁standing ▁position ▁pulling ▁on ▁two ▁handles ▁em ulating ▁the ▁double - pole ▁technique ▁found ▁in ▁Nord ic ▁ski ing . ▁Each ▁pull ▁eng ages ▁the ▁arms , ▁shoulders , ▁core , ▁and ▁legs ▁in ▁a ▁down wards ▁" cr unch " ▁making ▁it ▁a ▁total ▁body ▁work out . ▁It ▁places ▁greater ▁physical ▁dem ands ▁on ▁the ▁tr ice ps , ▁ch est , ▁and ▁ab dom inal ▁mus cles , ▁in ▁addition ▁to ▁the ▁strong ▁eng agement ▁of ▁the ▁back ▁mus cles ▁that ▁both ▁exer cis es ▁share . ▁ ▁D Y NO ▁The ▁Con cept 2 ▁D Y NO ▁was ▁an ▁air ▁resistance ▁strength ▁training ▁machine ▁sold ▁by ▁Con cept 2 ▁from ▁ 2 0 0 1 ▁until ▁ 2 0 0 7 . ▁It ▁was ▁designed ▁for ▁ben ch ▁press , ▁leg ▁press , ▁and ▁se ated ▁row ▁exer cis es ▁and ▁used ▁a ▁fly w heel ▁to ▁provide ▁resistance . ▁ ▁Bi ke Er g ▁ ▁The ▁Con cept 2 ▁Bi ke Er