Poling time and recovery time of poles increased .
Poling time and recovery time of poles decreased by 6 % and 3 % , respectively , and this led to 6 % increase in the duty cycles of poles at slow ski conditions compared to fast .
Poling time and recovery time of poles increased and decreased by 6 % and 3 % , respectively , and this led to 6 % increase in the duty cycles of poles at slow ski conditions compared to fast .