Work

Analysis of a sprint ski race and associated laboratory determinants of world-class performance

Year: 2010

Type: article

Abstract: This investigation was designed to analyze the time-trial (STT) in an international cross-country skiing sprint skating competition for (1) overall STT performance and relative contributions of time spent in different sections of terrain, (2) work rate and kinematics on uphill terrain, and (3) relationships to physiological and kinematic parameters while treadmill roller ski skating. Total time and times in nine different sections of terrain by 12 world-class male sprint skiers were determined, along with work rate and kinematics for one specific uphill section. In addition, peak oxygen uptake (VO(2peak)), gross efficiency (GE), peak speed (V(peak)), and kinematics in skating were measured. Times on the last two uphill and two final flat sections were correlated to overall STT performance (r = ~-0.80, P < 0.001). For the selected uphill section, speed was correlated to cycle length (r = -0.75, P < 0.01) and the estimated work rate was approximately 160% of peak aerobic power. VO(2peak), GE, V(peak), and peak cycle length were all correlated to STT performance (r = ~-0.85, P < 0.001). More specifically, VO(2peak) and GE were correlated to the last two uphill and two final flat section times, whereas V(peak) and peak cycle length were correlated to times in all uphill, flat, and curved sections except for the initial section (r = ~-0.80, P < 0.01). Performances on uphill and flat terrain in the latter part were the most significant determinants of overall STT performance. Peak oxygen uptake, efficiency, peak speed, and peak cycle length were strongly correlated to overall STT performance, as well as to performance in different sections of the race.

Source: European Journal of Applied Physiology

DOI: 10.1007/s00421-010-1719-9

Authors: Øyvind Sandbakk, Gertjan Ettema, Stig Leirdal, Vidar Jakobsen, Hans-Christer Holmberg

Institutions: Norwegian University of Science and Technology, Norwegian School of Sport Sciences, Mid Sweden University

Language: English

Topic: Winter Sports Injuries and Performance

Subfield: Orthopedics and Sports Medicine

Field: Medicine

Domain: Health Sciences

Open Access status: hybrid

Estimated APC paid: $2,890

Funder: Norges Idrettshøgskole