Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Comparison of Biomechanical Characteristics of Rowing Performance between Elite and Non-Elite Scull Rowers: A Pilot Study

  • Kim, Jin-Sun (Department of Physical Education, Graduate School, Yonsei University) ;
  • Cho, Hanyeop (Department of Physical Education, Graduate School, Yonsei University) ;
  • Han, Bo-Ram (Department of Physical Education, Graduate School, Yonsei University) ;
  • Yoon, So-Ya (Department of Physical Education, Graduate School, Yonsei University) ;
  • Park, Seonhyung (Department of Clothing & Textiles, Yonsei University) ;
  • Cho, Hyunseung (Department of Clothing & Textiles, Yonsei University) ;
  • Lee, Joohyeon (Institute of Symbiotic Life-TECH, Yonsei University) ;
  • Lee, Hae-Dong (Department of Physical Education, College of Sciences in Education, Yonsei University)
  • Received : 2016.02.03
  • Accepted : 2016.03.18
  • Published : 2016.03.31
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Abstract

Objective: This study aimed to examine the characteristics of joint kinematics and synchronicity of rowing motion between elite and non-elite rowers. Methods: Two elite and two non-elite rowers performed rowing strokes (3 trials, 20 strokes in each trial) at three different stroke rates (20, 30, 40 stroke/min) on two stationary rowing ergometers. The rowing motions of the rowers were captured using a 3-dimensional motion analysis system (8-infrared camera VICON system, Oxford, UK). The range of motion (RoM) of the knee, hip, and elbow joints on the sagittal plane, the lead time ($T_{Lead}$) and the drive time $T_{Drive}$) for each joint, and the elapsed time for the knee joint to maintain a fully extended position ($T_{Knee}$) during the stroke were analyzed and compared between elite and non-elite rowers. Synchronicity of the rowing motion within and between groups was examined using coefficients of variation (CV) of the $T_{Drive}$ for each joint. Results: Regardless of the stroke rate, the RoM of all joints were greater for the elite than for non-elite rowers, except for the RoMs of the knee joint at 30 stroke/min and the elbow joint at 40 stroke/min (p < .05). Although the $T_{Lead}$ at all stroke rates were the same between the groups, the $T_{Drive}$ for each joint was shorter for the elite than for the non-elite rowers. During the drive phase, elite rowers kept the fully extended knee joint angle longer than the non-elite rowers (p < .05). The CV values of the TDrive within each group were smaller for the elite compared with non-elite rowers, except for the CV values of the hip at all stroke/min and elbow at 40 stroke/min. Conclusion: The elite, compared with non-elite, rowers seem to be able to perform more powerful and efficient rowing strokes with large RoM and a short $T_{Drive}$ with the same $T_{Lead}$.

Keywords

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