Background In literature there is a general consensus that the use of the mirror improves proprioception. During rehabilitation the mirror is an important instrument to improve stability. In some sports, such as dancing, mirrors are widely used during training. The purpose of this study is to evaluate the effectiveness of the use of a mirror on balance in young dancers. Sixty-four young dancers (ranging from 9–10 years) were included in this study. Thirty-two attending lessons with a mirror (mirror- group) were compared to 32 young dancers that attended the same lessons without a mirror (non-mirror group). Balance was evaluated by BESS (Balance Error Scoring System), which consists of three stances (double limb, single limb, and tandem) on two surfaces (firm and foam). The errors were assessed at each stance and summed to create the two subtotal scores (firm and foam surface) and the final total score (BESS). The BESS was performed at recruitment (T0) and after 6?months of dance lessons (T1). Results The repeated measures ANOVA analysis showed that for the BESS total score there is a difference due to the time (F?=?3.86; p??0.05). The analysis of the multiple regression model showed the influence of the values at T0 for every BESS items and the dominance of limb for stability on an unstable surface standing on one or two legs. Conclusions These preliminary results suggest that the use of a mirror in a ballet classroom does not improve balance acquisition of the dancer. On the other hand, improvement found after 6?months confirms that at the age of the dancers studied motor skills and balance can easily be trained and improved.
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机译：背景技术在文献中，人们普遍认为使用镜子可改善本体感受。在康复过程中，镜子是提高稳定性的重要工具。在某些运动中，例如跳舞，在训练过程中广泛使用镜子。这项研究的目的是评估在年轻舞者平衡使用镜子的有效性。这项研究包括了64位年轻舞者（9至10岁）。比较了32例带镜子的上课（镜组）和32名年轻的舞蹈演员，他们在没有镜子的情况下上了同一课（非镜组）。通过BESS（平衡误差评分系统）评估平衡，该平衡由在两个表面（坚固和泡沫）上的三种姿态（双肢，单肢和纵排）组成。对每种姿势的误差进行评估，并将其求和，以得出两个小计分（坚固和泡沫表面）和最终总分（BESS）。 BESS在招募（T0）以及6个月的舞蹈课（T1）之后进行。结果重复测量的ANOVA分析表明，对于BESS总分，由于时间的不同而有差异（F 1 ＝ 3.86; P ＜0.05）。多元回归模型的分析表明，对于每一个BESS项目，T0值的影响以及肢体稳定性对支配一只或两只腿的不稳定表面的影响。结论这些初步结果表明，在芭蕾舞教室中使用镜子并不能改善舞者的平衡能力。另一方面，六个月后发现的改善证实了在舞者年龄时学习运动技能和平衡的能力很容易得到训练和提高。
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