TY - JOUR
T1 - The impact of start strategy on start performance in alpine skiing exists on flat, but not on steep inclines
AU - Supej, Matej
AU - Nedergaard, Niels J
AU - Nord, Joakim
AU - Holmberg, Hans-Christer
PY - 2019/3
Y1 - 2019/3
N2 - Here, we explored the relationship between incline and start strategy during alpine skiing. Eight FIS skiers performed starts on a flat (3°) and steep (21°) incline employing five different strategies. Their times, trajectories and velocities were monitored with a GNSS system and video. A significant interaction was observed between slope incline and start strategy with respect to the skier's exit velocity (p < 0.001, ƞ2p = 0.716), but not for the start section time (p = 0.732, ƞ2p = 0.037). On the almost flat incline, both section time (p = 0.022, ƞ2p = 0.438) and exit velocity (p < 0.001, ƞ2p = 0.786) were influenced significantly by start strategy, with four V2 skate-pushes being optimal. On the steep incline, neither section time nor exit velocity was affected significantly by start strategy, the fastest section time and exit velocity being attained with four and two V2 skate-pushes, respectively. In conclusion, these findings demonstrate that the start strategy exerts considerable impact on start performance on almost flat inclines, with strategies involving three or more V2 skate-pushes being optimal. In contrast, start performance on the steep incline was not influenced by strategy.
AB - Here, we explored the relationship between incline and start strategy during alpine skiing. Eight FIS skiers performed starts on a flat (3°) and steep (21°) incline employing five different strategies. Their times, trajectories and velocities were monitored with a GNSS system and video. A significant interaction was observed between slope incline and start strategy with respect to the skier's exit velocity (p < 0.001, ƞ2p = 0.716), but not for the start section time (p = 0.732, ƞ2p = 0.037). On the almost flat incline, both section time (p = 0.022, ƞ2p = 0.438) and exit velocity (p < 0.001, ƞ2p = 0.786) were influenced significantly by start strategy, with four V2 skate-pushes being optimal. On the steep incline, neither section time nor exit velocity was affected significantly by start strategy, the fastest section time and exit velocity being attained with four and two V2 skate-pushes, respectively. In conclusion, these findings demonstrate that the start strategy exerts considerable impact on start performance on almost flat inclines, with strategies involving three or more V2 skate-pushes being optimal. In contrast, start performance on the steep incline was not influenced by strategy.
KW - Adolescent
KW - Athletic Performance
KW - Biomechanical Phenomena
KW - Female
KW - Humans
KW - Male
KW - Skiing
KW - Video Recording
KW - Young Adult
U2 - 10.1080/02640414.2018.1522698
DO - 10.1080/02640414.2018.1522698
M3 - Journal article
C2 - 30317917
SN - 0264-0414
VL - 37
SP - 647
EP - 655
JO - Journal of Sports Sciences
JF - Journal of Sports Sciences
IS - 6
ER -