IntroductionAs western theatrical dance has developed through the centuries, dance educators, artists, and researchers have sought methods to improve dance skills and to refine the quality of dance performance. In the pursuit of ever-increasing technical skills, improved alignment, freedom from injury, and enhanced artistic capabilities such as expanded dynamic and expressive range, dancers have explored numerous training systems developed for these purposes. These systems are often used in conjunction with dance technique classes, and they explore a range of approaches addressing different aspects of the neural and motor mechanisms underlying dance skills. In general, the systems can be seen as operating within two large concerns. The first includes systems using imagery and/or mental practice designed to affect alignment and dance performance on the subcortical or neurological level, with minimal or no physical action (Bartenieff 1980;Dowd 1990;Sweigard 1974;Todd 1937). The second emphasizes consistent and specialized exercise programs designed to encourage muscular strength and endurance, flexibility, and/or cardio-respiratory endurance, with the claim that these physical changes will enhance alignment, dance technique, and performance (Clippinger-Robertson

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The authors reviewed the literature, published from 1970 through December 2009, on biomechanical research in dance. To identify articles, the authors used search engines, including PubMed and Web of Science, five previous review articles, the Dance Medicine and Science Bibliography, and reference lists of theses, dissertations, and articles being reviewed. Any dance research articles (English language) involving the use of electromyography (EMG), forceplates, motion analysis using photography, cinematography or videography, and/or physics analysis were included. A total of 89 papers, theses/dissertations, and abstracts were identified and reviewed, grouped by the movement concept or specialized movements being studied: alignment (n = 8), plié (8), relevé (8), passé (3), degagé (3), développé (7), rond de jambe (3), grand battement (4), arm movements (1), forward stepping (3), turns (6), elevation work (28), falls (1), and dance-specific motor strategies (6). Several recurring themes emerged from these studies: that elite dancers demonstrate different and superior motor strategies than novices or nondancers; that dancers perform differently when using a barre as opposed to without a barre, both in terms of muscle activation patterns and weight shift strategies; that while skilled dancers tend to be more consistent across multiple trials of a task, considerable variability is seen among participants, even when matched for background, years of training, body type, and other variables; and that dance teachers recommend methods of achieving movement skills that are inconsistent with optimal biomechanical function, as well as inconsistent with strategies employed by elite dancers. Measurement tools and the efficacy of study methodologies are also discussed.

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