Differences in adaptation to slope in classical cross.country skiing techniques

In classical cross country skiing the main techniques are diagonal stride (DS), that is performed by pushing through both skis and poles and double poling (DP) in which the propulsion is demanded by a synchronous action of both poles. DP is adopted on flat and for fast skiing, its importance has increased in recent years, however DS is preferred on uphill tracts. The aim of this study was to describe cost of locomotion, timing and amount of propulsion for the two techniques and to analyse adaptation that occurs when increasing slope.