European Journal of Applied Physiology

, Volume 115, Issue 5, pp 969–979 | Cite as

Energetics and biomechanics of double poling in regional and high-level cross-country skiers

  • Chiara ZoppirolliEmail author
  • Barbara Pellegrini
  • Lorenzo Bortolan
  • Federico Schena
Original Article



The aim of this study was to evaluate the energetics and the biomechanics of double poling technique (DP) in two groups of cross-country skiers.


Eight high-level (HLG) and eight regional-level (RLG) skiers performed a 5-min sub-maximal DP trial, roller skiing on a treadmill at 14 km h−1 and 2°. Energetic cost (ECDP), center of mass (COM) vertical displacement range, body inclination (θ, i.e., the angle between the vertical line and the line passing through COM and a fixed pivot point identified at feet level) and mechanical work associated to COM motion were analyzed. Pole and joint kinematics, poling forces and cycle timing were also considered.


HLG showed lower ECDP than RLG, smaller COM vertical displacement range and mechanical work, whereas higher θ during the early part of the poling phase (P < 0.05). In HLG, pole inclination was higher, poling forces greater and cycle duration longer (P < 0.05). Considering all skiers, a forward multiple regression revealed that the maximum value of θ (θ max) and the minimum value of COM vertical displacement resulted the COM-related parameters that better predict ECDP (AdjR 2 = 0.734; P < 0.001). Moreover, θ max positively related to poling force integrals and cycle duration (P < 0.05).


A pronounced body inclination during the early poling phase and a reduced COM vertical displacement range concur in explaining the differences in ECDP found between the groups and among the skiers. A mechanically advantageous motion of COM during DP improves poling effectiveness, reduces cycle frequency and the mechanical work sustained.


Cross-country skiing COM Energetic cost Poling force 



Blood lactate concentration




Center of mass


Double poling


Energetic cost


Energetic cost of double poling


Federazione Italiana Sport Invernali (Italian Winter Sports Federation)


High-level group

iF %

Integral of poling force normalized by body weight


Integral of propulsive poling force normalized by body weight


Integral of vertical poling force normalized by body weight


Body segment mass


Body mass


Multivariate analysis of variance


Matrix laboratory


Maximum value within a cycle


Minimum value within a cycle


End of poling phase


Start of poling phase


P value


Instant of peak poling force


R value


Regional-level group


Standard deviation


Statistical package for the social sciences


Oxygen consumption


Mechanical work associated with forward movement of COM


Mechanical work associated with vertical movement of COM


Mechanical work associated with total movement of COM


Antero-posterior dimension


Position of center of mass in the antero-posterior dimension


Vertical dimension


Position of center of mass in the vertical dimension


Pole inclination


Body inclination with respect to the vertical line



The authors would like to thank the athletes and their coaches for their participation and cooperation, the military groups to which the skiers belong (Fiamme Gialle and Fiammo Oro) and the Italian Federation of Winter Sports Federation (FISI). This study was supported financially by the Municipality of Rovereto, Italy.

Conflict of interest

The authors declare no conflict of interest.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Chiara Zoppirolli
    • 1
    • 2
    Email author
  • Barbara Pellegrini
    • 1
    • 2
  • Lorenzo Bortolan
    • 1
    • 2
  • Federico Schena
    • 1
    • 2
  1. 1.CeRiSM (Research Center Sport Mountain and Health)RoveretoItaly
  2. 2.Neurological and Movement Science DepartmentUniversity of VeronaVeronaItaly

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