A Comparison of Ballet Dancers With Different Level of Experience in Performing Single-Leg Stance on Retiré Position

in Motor Control
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The purpose of the current study was to evaluate the postural stability of singleleg standing on the retiré position in ballet dancers having three different levels of skill. Nine superior experienced female ballet dancers, 9 experienced, and 12 novice dancers performed single-leg standing in the retiré position. The parameters of center of pressure (COP) in the anterior-posterior and medial-lateral directions and the maximum distance between COP and the center of mass (COM) were measured. The inclination angles of body segments (head, torso, and supporting leg) in the frontal plane were also calculated. The findings showed that the novice dancers had a trend of greater torso inclination angles than the experienced dancers but that the superior experienced dancers had greater maximum COM-COP distance in the anterior-posterior direction. Furthermore, both experienced and novice dancers had better balance when standing on the nondominant leg, whereas the superior experienced dancers had similar postural stability between legs. Based on the findings, ballet training should put equal focus on both legs and frontal plane control (medial-lateral direction) should be integrated to ballet training program.

C-W Lin and Su are with the Institute of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan. C-F Lin and Hsue are with the Dept. of Physical Therapy, National Cheng Kung University, Tainan, Taiwan.

Address author correspondence to Cheng-Feng Lin at connie@mail.ncku.edu.tw.
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