한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제26권4호
  • /
  • Pages.361-367
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  • 2016
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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Comparison of Three-dimensional Kinematic Changes of the Lower Extremity between the Two Different Braking Distances of Snowplow in Alpine Skiing

  • Kim, Joo-Nyeon (Department of Physical Education, Korea National Sport University) ;
  • Kim, Jin-Hae (Department of Physical Education, Korea National Sport University) ;
  • Ryu, Jiseon (Department of Health and Exercise Science, Korea National Sport University) ;
  • Yoon, Sukhoon (Department of Community Sport, Korea National Sport University) ;
  • Park, Sang-Kyoon (Department of Physical Education, Korea National Sport University)
  • 투고 : 2016.09.21
  • 심사 : 2016.12.06
  • 발행 : 2016.12.31
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초록

Objective: The aim of this study was to compare three-dimensional kinematic changes of the lower extremity between the two different braking distances during snowplow in alpine skiing. Method: Six alpine ski instructors (age: $25.3{\pm}1.5yr$, height: $169.3{\pm}2.9cm$, weight: $66.2{\pm}5.9kg$, career: $4.2{\pm}2.9yr$) participated in this study. Each skier was asked to perform snowplow on the two different braking distances (2 and 4 m). Results: Snowplow and edging angles (p = .006 and p = .005), ankle adduction and inversion (p = .033 and p = .002), knee extension (p = .003), and hip abduction and internal rotation (p = .043 and p = .006) were significantly greater in the 2 m than in the 4 m braking distance. Conclusion: Based on our results, we suggest that skiers should make greater snowplow and edging angles on the shorter braking distance. In this situation, ankle joint adduction/inversion angle and hip joint internal-rotation make greater snowplow angle, and hip joint abduction make greater edging angle. In addition, greater knee joint extension angle may lead to more posteriorly positioned center of mass.

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참고문헌

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