<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1135-5727</journal-id>
<journal-title><![CDATA[Revista Española de Salud Pública]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Esp. Salud Publica]]></abbrev-journal-title>
<issn>1135-5727</issn>
<publisher>
<publisher-name><![CDATA[Ministerio de Sanidad]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1135-57272009000400004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Danza profesional: una revisión desde la salud laboral]]></article-title>
<article-title xml:lang="en"><![CDATA[Professional Dance: An appraisal from the Occupational Health]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Román Fuentes]]></surname>
<given-names><![CDATA[Esther]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ronda Pérez]]></surname>
<given-names><![CDATA[Elena]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrasco Portiño]]></surname>
<given-names><![CDATA[Mercedes]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Ayuntamiento de Elche Servicio de Prevención ]]></institution>
<addr-line><![CDATA[Elche Alicante]]></addr-line>
<country>España</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad de Alicante Área de Medicina Preventiva y Salud Pública ]]></institution>
<addr-line><![CDATA[Alicante ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,CIBER Epidemiología y Salud Pública (CIBERESP)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2009</year>
</pub-date>
<volume>83</volume>
<numero>4</numero>
<fpage>519</fpage>
<lpage>532</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1135-57272009000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1135-57272009000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1135-57272009000400004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Fundamentos: La danza es una disciplina artística y como en cualquier ocupación los bailarines están expuestos a factores de riesgo laborales. El objetivo de este trabajo es analizar las características de la evidencia empírica existente sobre la danza profesional y su repercusión en la salud. Métodos: Revisión bibliográfica de todos los artículos indexados en: Medline, Embase, Cochrane Library, Lilacs, Cinhal e IME. Utilizando como palabras claves: dancing, professional ballet, danza, danza profesional, bailarín/a/es y zapateado. Resultados: Se identificaron 893 artículos: 76 fueron incluidos en la revisión bibliográfica. De ellos 40 tienen como objeto de estudio las lesiones traumáticas y accidentes. El 40% relacionados con los ensayos y en el 70% localizadas en el miembro inferior. Los 36 artículos restantes analizan los trastornos de la alimentación, menstruación y densidad ósea en este colectivo profesional. El 50%, describe problemas de bajo peso en las bailarinas, el 58% identifica menarquia tardía y trastornos menstruales y el 14% explora, con resultados contradictorios, el efecto protector o de riesgo del baile intenso en la masa ósea. El 62% son estudios transversales. Conclusiones: La producción científica nos aproxima a la situación de salud de profesionales de la danza, pero no proporciona una dirección de causalidad relacionada a las patologías de esta profesión, pues se trata mayoritariamente de estudios descriptivos. Los estudios apuntan a la necesidad de profundizar en la investigación sobre la formación nutricional, su actitud ante las lesiones, condiciones sociolaborales y también la necesidad de formación de profesionales especializados en riesgos laborales de la danza profesional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Background: Dance is essentially an artistic discipline, with the dancer being exposed, as in any other occupation, to ocuppational risk factors. This document aims at identifying the characteristics about Professional Dance and its impact on the dancer's health. Methods: Bibliographical review of all the material indexed at: Medline, Embase, Cochrane Library, Lilacs, Cinhal and IME. Using the keywords: dancing, professional ballet, danza (dance), danza profesional (professional dance), bailarín/a/es (dancer(s)) y zapateado (tap dance). Results: 893 articles were identified: 76 were included in the bibliographical review. 40 of them are focused on the study of traumatic lesions and accidents. 40% are related to rehearsing and 70% affect the lower limbs. 36 articles analyze eating, menstrual, and bone density disorders. 50% describe low weight problems for women dancers, 58% identify delayed menarche and menstrual disorders, while 14% explore the beneficial/harmful effect of intensive dancing on bone mass. 62% are cross-sectional studies. Conclusions: Scientific production gets us closer to the health condition of dance professionals, but doesn't provide an insight on the cause-effect relationship of this profession's pathologies because most studies are merely descriptive. This studies underline the need of a deeper research on nutrition training, its stand before lesions, social and working conditions, and the training of dedicated professionals on occupational health in professional dance.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Arte]]></kwd>
<kwd lng="es"><![CDATA[Salud laboral]]></kwd>
<kwd lng="en"><![CDATA[Occupational health]]></kwd>
<kwd lng="en"><![CDATA[Art]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p><font face="Verdana" size="2"><b><a name="top"></a>REVISIÓN BIBLIOGRÁFICA</b></font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="4"><b>Danza profesional: una revisión desde la salud laboral</b></font></p>     <p><font face="Verdana" size="4"><b>Professional Dance: An appraisal from the Occupational Health</b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Esther Román Fuentes (1,2), Elena Ronda Pérez (2) y Mercedes Carrasco Portiño (2,3)</b></font></p>     <p><font face="Verdana" size="2">(1) Servicio de Prevención. Ayuntamiento de Elche. Alicante.    <br>(2) Área de Medicina Preventiva y Salud Pública. Universidad de Alicante. Alicante.    <br>(3) CIBER Epidemiología y Salud Pública (CIBERESP).</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><a href="#bajo">Dirección para correspondencia</a></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr size="1">     <p><font face="Verdana" size="2"><b>RESUMEN</b></font></p>     <p><font face="Verdana" size="2"><b>Fundamentos:</b> La danza es una disciplina artística y como en cualquier ocupación los bailarines están expuestos a factores de riesgo laborales. El objetivo de este trabajo es analizar las características de la evidencia empírica existente sobre la danza profesional y su repercusión en la salud.    <br><b>Métodos:</b> Revisión bibliográfica de todos los artículos indexados en: Medline, Embase, Cochrane Library, Lilacs, Cinhal e IME. Utilizando como palabras claves: dancing, professional ballet, danza, danza profesional, bailarín/a/es y zapateado.    <br><b>Resultados:</b> Se identificaron 893 artículos: 76 fueron incluidos en la revisión bibliográfica. De ellos 40 tienen como objeto de estudio las lesiones traumáticas y accidentes. El 40% relacionados con los ensayos y en el 70% localizadas en el miembro inferior. Los 36 artículos restantes analizan los trastornos de la alimentación, menstruación y densidad ósea en este colectivo profesional. El 50%, describe problemas de bajo peso en las bailarinas, el 58% identifica menarquia tardía y trastornos menstruales y el 14% explora, con resultados contradictorios, el efecto protector o de riesgo del baile intenso en la masa ósea. El 62% son estudios transversales.    <br><b>Conclusiones:</b> La producción científica nos aproxima a la situación de salud de profesionales de la danza, pero no proporciona una dirección de causalidad relacionada a las patologías de esta profesión, pues se trata mayoritariamente de estudios descriptivos. Los estudios apuntan a la necesidad de profundizar en la investigación sobre la formación nutricional, su actitud ante las lesiones, condiciones sociolaborales y también la necesidad de formación de profesionales especializados en riesgos laborales de la danza profesional.</font></p>     <p><font face="Verdana" size="2"><b>Palabras claves:</b> Arte. Salud laboral.</font></p> <hr size="1">     <p><font face="Verdana" size="2"><b>ABSTRACT</b></font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><b>Background:</b> Dance is essentially an artistic discipline, with the dancer being exposed, as in any other occupation, to ocuppational risk factors. This document aims at identifying the characteristics about Professional Dance and its impact on the dancer's health.    <br><b>Methods:</b> Bibliographical review of all the material indexed at: Medline, Embase, Cochrane Library, Lilacs, Cinhal and IME. Using the keywords: dancing, professional ballet, danza (dance), danza profesional (professional dance), bailarín/a/es (dancer(s)) y zapateado (tap dance).    <br><b>Results:</b> 893 articles were identified: 76 were included in the bibliographical review. 40 of them are focused on the study of traumatic lesions and accidents. 40% are related to rehearsing and 70% affect the lower limbs. 36 articles analyze eating, menstrual, and bone density disorders. 50% describe low weight problems for women dancers, 58% identify delayed menarche and menstrual disorders, while 14% explore the beneficial/harmful effect of intensive dancing on bone mass. 62% are cross-sectional studies.    <br><b>Conclusions:</b> Scientific production gets us closer to the health condition of dance professionals, but doesn't provide an insight on the cause-effect relationship of this profession's pathologies because most studies are merely descriptive. This studies underline the need of a deeper research on nutrition training, its stand before lesions, social and working conditions, and the training of dedicated professionals on occupational health in professional dance.</font></p>     <p><font face="Verdana" size="2"><b>Key words:</b> Occupational health. Art.</font></p> <hr size="1">     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Introducción</b></font></p>     <p><font face="Verdana" size="2">La danza es el arte de la expresión por el movimiento y los bailarines los artífices de convertir sus movimientos en arte<sup>1</sup>. Ha tenido su manifestación en todas las culturas, pero data de 1681, cuando por primera vez danzaron sobre el escenario de la Ópera de París bailarines profesionales<sup>2</sup>. Esto coincidió con el momento en que empieza a desarrollarse la danza como arte escénico. Al cambiar la técnica para lograr captar la atención del público, las y los bailarines necesitaron un creciente y exigente adiestramiento, ya que la nueva técnica estaba en el salto y el giro<sup>3</sup>. La danza se convierte así en una profesión que requiere, además de la inspiración que la convierte en arte, una preparación física importante que exige el virtuosismo<sup>2</sup>.</font></p>     <p><font face="Verdana" size="2">Especialistas en la materia afirman que entre los riesgos ergonómicos a los que se encuentran expuestos estos artistas destacan los asociados con una técnica inadecuada o con la ocurrencia de accidentes<sup>4</sup>. A su vez, algunas investigaciones confirman que después de un tiempo prolongado de ejercicio profesional, de posturas forzadas y de movimientos repetitivos se pueden originar problemas músculo-esqueléticos<sup>5,6</sup>. Estos estudios afirman que las lesiones músculo-esqueléticas en este grupo profesional pueden tener una etiología multifactorial que implica la interacción de la biomecánica compensatoria en la espina dorsal y las extremidades inferiores, los factores ambientales y el calzado5, así como el estado e inclinación del suelo y la temperatura<sup>6</sup>. Otros riesgos descritos se relacionan con la tensión psicológica, las dietas inadecuadas, la presión por el perfeccionamiento y la ansiedad que acompaña a las representaciones<sup>7</sup>.</font></p>     <p><font face="Verdana" size="2">A pesar de compartir los factores de riesgo que conlleva la danza tanto para hombres como para mujeres, éstas últimas pueden sufrir más problemas de salud. Esto podría deberse al requerimiento de mantener un bajo peso corporal, lo que puede ocasionar algunos trastornos psicológicos y alimentarios<sup>8, 9</sup>, ya que la aportación calórica inadecuada de forma sostenida puede causar múltiples problemas incluyendo la disminución significativa de la masa relativa y absoluta del músculo, irregularidades menstruales e inadecuada mineralización del hueso<sup>6</sup>.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">Es importante destacar que, para ejercer como profesional de la danza se requiere trabajar arduamente con su cuerpo, el más fuerte y a la vez más frágil de los instrumentos<sup>10</sup> y que se debe tener en cuenta que estos trabajadores/as están expuestos a riesgos laborales específicos de su profesión.</font></p>     <p><font face="Verdana" size="2">El objetivo de esta revisión bibliográfica es analizar las características de los artículos publicados sobre la danza profesional y su repercusión en la salud de bailarines y bailarinas.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Material y métodos</b></font></p>     <p><font face="Verdana" size="2"><b>Perfil de búsqueda.</b> Se realizó una revisión de los estudios publicados que relacionan la práctica de la danza con los problemas de la salud derivados de su ejecución de forma profesional. Se consultaron las bases de datos: Medline, Embase, Cochrane Library, Lilacs, IME y Cinhal.</font></p>     <p><font face="Verdana" size="2">Se seleccionaron todos los artículos publicados hasta abril de 2008 que mencionaban en sus títulos y abstracts la posible relación entre la situación laboral del bailarín profesional y todos los aspectos del binomio salud y enfermedad o accidente. El término limitador por contenido fue la especie humana y que existiese resumen disponible. En cuanto al idioma, se seleccionaron las publicaciones escritas en español, inglés, francés, italiano o portugués.</font></p>     <p><font face="Verdana" size="2">Se incluyeron los artículos que trataban exclusivamente la salud laboral y los factores de riesgo de los profesionales de la danza. Se excluyeron los artículos: 1) cuyo resumen disponible era insuficientemente explicativo, 2) de revisión teórica, 3) que se centraban en la danza practicada por adultos no profesionales 4) que centralizaban su interés en la danza como terapia, 5) en los que se utilizaba "la danza" como metáfora 6) que estudian a alumnos/as de danza, 7) artículos repetidos en diferentes bases de datos, 8) los no relacionados con la salud de los profesionales de la danza, 9) artículos "a propósito de un caso", 10) los que tenían como objeto de estudio la Biomecánica en el ejercicio de la danza, 11) los que estudiaban técnicas de diagnóstico, tratamiento y rehabilitación, y por 12) último , aquellos artículos que estudian el entrenamiento, equilibrio y propiocepción.</font></p>     <p><font face="Verdana" size="2"><b>Recogida de información.</b> Se elaboró un protocolo <I>ad hoc</I> de recogida de información en el que se incluyen las siguientes variables: 1) Identificación del primer firmante, 2) Año de publicación, 3) País en que se realizó la investigación, 4) Área de conocimiento de la revista, 5) Tipo de diseño del estudio, 6) Objetivo del estudio, 7) Tamaño de la muestra, 8) Especialidad de la danza estudiada, 9) Limitaciones, 10) Principales resultados, 11) Sexo de los profesionales estudiados. Además, para aquellos artículos que aborden las lesiones traumáticas dentro de sus objetivos, se añadirán las variables relacionadas con a) factores de riesgo estudiados, b) el tipo de actividad dentro del repertorio de actividades del profesional en que se producen las lesiones (p.e: ensayo, clase, ensayo general y representación), c) la zona del cuerpo que se lesiona con mayor frecuencia, d) la resolución final de la lesión: curación total, secuelas como dolor, impotencia o retiro profesional, y e) el tipo de lesión.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Resultados</b></font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">En la búsqueda inicial se identificaron 893 artículos, de los que se excluyeron 817 por no cumplir los criterios de inclusión (<a href="#f1">figura 1</a>).</font></p>     <p align="center"><font face="Verdana" size="2"><a name="f1"><img src="/img/revistas/resp/v83n4/revision_figura1.jpg" width="600" height="677" border="0"></a></font></p>     <p><font face="Verdana" size="2">Los 76 artículos seleccionados se clasificaron en los dos grupos: El Grupo I está formado por artículos cuyo objetivo de estudio son lesiones traumáticas y accidentes, y el Grupo II por el resto, que principalmente incluye investigaciones centradas en problemas de salud, como los trastornos de la alimentación, de la menstruación y de la densidad ósea.</font></p>     <p><font face="Verdana" size="2">En el grupo I se incluyen 40 artículos (52,6%)<sup>11-50</sup> y en el grupo II 36 artículos (47,4 %)<sup>51-86</sup>. En las tablas <a target="_blank" href="/img/revistas/resp/v83n4/revision_bibliografica_tabla1.html">1</a> y <a target="_blank" href="/img/revistas/resp/v83n4/revision_tabla2.jpg">2</a> se pueden observar algunas de las características de los artículos incluidos en la revisión de ambos grupos. Las variables comunes son: nombre del primer firmante, el año de publicación, objetivo del estudio, diseño de estudio, tamaño muestral y resultados. La <a target="_blank" href="/img/revistas/resp/v83n4/revision_bibliografica_tabla1.html">tabla 1</a> añade el tipo de lesión y localización de esta.</font></p>     <p><font face="Verdana" size="2">El primer artículo analizado data de 1980<sup>86</sup>, aunque la mayor producción científica se produce en la segunda mitad de los años 90, tanto del grupo I (22,4%; n=17)<sup>20-36</sup> como del II (13,2%; n=10)<sup>73-83</sup>.</font></p>     <p><font face="Verdana" size="2">En Estados Unidos han sido realizados 46% (n=35), sobre todo los artículos del grupo I. El 36,8% (n=28) es producción europea, seguida de los artículos latinoamericanos, que llegan al 6,6% (n=5)<sup>11,12,21,41,87,90</sup>. Los 4 artículos españoles tienen como objeto de estudio los trastornos en la alimentación (5.3%)<sup>52,56,65,68</sup>.</font></p>     <p><font face="Verdana" size="2">Las áreas de conocimiento de las revistas donde se han publicado los artículos del grupo I incluye: Traumatología y Ortopedia con un 40% de los artículos analizados (n=16)<sup>12,13,16,18,19,24,31,32,36,38,41,43,45,46,49,51</sup>, seguido de Medicina Deportiva (35%; n=14)<sup>15,17,21,23,25,29,30,33,37,39,40,44,47,48</sup>, Arte (17,0%; n=7)<sup>11,20,22,26,27,34,35</sup>, Medicina del Trabajo (5%; n=2)<sup>14,28</sup> y, por último, Nutrición (2,5%; n=1)<sup>42</sup>. Asimismo, en el grupo II las revistas se orientan hacia las siguientes áreas de conocimiento: Ginecología y Endocrinología (30,6%; n=11)<sup>52,54,56,58-61,75,79,82,85</sup>, Medicina y Psicología Deportiva (25,0%; n=9)<sup>51,63,67,69,74,78,80,81,83</sup>, Neuropsicología y Psicopatología (19,4%; n=7)<sup>53,57,66,70,72,76,86</sup>, Nutrición Deportiva (16,7%; (n=6)&#093;<sup> 55,64,65,73,77,84</sup>, y Traumatología y Ortopedia &#091;8,3% (n=3)&#093;<sup>62,68,71</sup>.</font></p>     <p><font face="Verdana" size="2">En cuanto al tipo de baile estudiado destaca el ballet clásico (63,2%; n=48), seguido de baile contemporáneo (3,9%; n=3)<sup>11,14,15</sup>. El resto de artículos estudian la danza profesional en general, sin especificar el tipo de baile.</font></p>     <p><font face="Verdana" size="2">Respecto al sexo de los profesionales estudiados, en el grupo I el 92,5% (n= 37) de los estudios incluían a hombres y mujeres, y el 3,5% (n=3) estudiaban exclusivamente a bailarinas. En cambio en el grupo II la mayoría incluyen únicamente a bailarinas (94,4%; n=34), excepto en 2 artículos donde comparan sus resultados con bailarines (5,6%).</font></p>     <p><font face="Verdana" size="2">Entre los 40 artículos incluidos en el grupo I la frecuencia de lesiones varía según los estudios. En este sentido, algunos afirman que el 91%<sup>64</sup> o 100%<sup>13</sup> de los profesionales de la danza podrían sufrir al menos una lesión en su carrera profesional. A su vez se afirma que el 97% de bailarines podrían sufrir lesiones durante un año<sup>33</sup>.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">En algunos de los artículos se afirma que tener seguros y sistemas de prevención de riesgos laborales es favorable para la salud de los profesionales de la danza, tanto por la reducción de los efectos en salud, disminución del número de lesiones, de los días de baja laboral y costes económicos<sup>15,34,35,39</sup>.</font></p>     <p><font face="Verdana" size="2">Finalmente, es escasa la información acerca de las limitaciones de los estudios incluidos en esta revisión, ya que en el grupo I (lesiones traumáticas) sólo 6 estudios ofrecen el reconocimiento de limitaciones como sesgos de información<sup>11,15,20,42</sup> y sesgos de recuerdo<sup>36,48</sup>. En el grupo II (trastornos menstruales, de la alimentación y densidad ósea) dos artículos reconocen haber cometido sesgos de mala clasificación en sus estudios<sup>53, 60</sup> y uno reconoce la existencia de sesgo de recuerdo en su investigación<sup>73</sup>.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Discusión</b></font></p>     <p><font face="Verdana" size="2">Los artículos centrados en los efectos de la danza en los profesionales que la practican son todavía incipientes en la literatura científica. Los trabajos publicados se centran principalmente en el estudio de lesiones traumáticas agudas, sobretodo las producidas por el sobreentrenamiento u overuse (grupo I), y en la baja ingesta calórica de profesionales de la danza, con su consecuente bajo peso corporal, alteraciones menstruales y bajos niveles de densidad ósea (grupo II).</font></p>     <p><font face="Verdana" size="2">Los resultados obtenidos podrían verse influidos por el hecho de que en las bases de datos consultadas no incluyen todos los tipos de publicaciones disponibles sobre el objeto de estudio abordado. Sin embargo se han explorado las que de alguna forma resultan fundamentales tanto para las ciencias de la salud como para la investigación que se desarrolla en Europa, Estados Unidos y Latinoamérica. Por tanto, podría decirse que se ha realizado una búsqueda lo suficientemente exhaustiva como para poder, al menos, establecer una aproximación a su estudio.</font></p>     <p><font face="Verdana" size="2">La escasez de investigaciones con diseños apropiados para analizar las relaciones causales y la heterogeneidad de criterios utilizados para estudiar la repercusión de la danza profesional en los bailarines y las bailarinas son parte de las limitaciones observadas en la producción científica desarrollada en este tema. Además, cabe destacar las derivadas de incluir en los estudios analizados a profesionales de élite o de prestigiosas compañías de baile<sup>11,17,19,21,22,26,27,28,29,30,33,34,35,36,38,39,48,44,60,66,71,78,81,83</sup>, ya que esto hace que se incluya a profesionales con condiciones físicas excepcionales, que han superado un estricto proceso, lo que podría incorporar un sesgo de selección de estos estudios mediante el efecto del trabajador sano, descrito en cohortes laborales cuando el grupo no-expuesto queda constituido por la población general, en este caso por profesionales de características físicas especiales<sup>87,88</sup>.</font></p>     <p><font face="Verdana" size="2">Otra limitación a considerar es que los profesionales de la danza acuden a centros médicos especializados, en su mayoría centros deportivos de alto nivel. Esto podría explicar que algunos estudios comparen a los profesionales de la danza con deportistas de distintas especialidades como puede ser el voleibol<sup>79</sup> y la gimnasia<sup>57</sup>. En estos casos no se estaría teniendo en cuenta un adecuado grupo control y por lo tanto se podría estar incurriendo en un sesgo de selección.</font></p>     <p><font face="Verdana" size="2">El hecho de que los estudios incluyan a profesionales que trabajan en grandes compañías de baile puede influir en que se desconozcan las cifras de accidentabilidad laboral de bailarines y bailarinas de pequeñas compañías o grupos independientes.</font></p>     <p><font face="Verdana" size="2">Los artículos encontrados en relación a los factores externos que pueden influir en la producción de lesiones mencionan el suelo inclinado, resbaladizo e inestable como las causas que más frecuentemente originan lesiones, así como también la alternancia entre alta luminosidad y oscuridad de los escenarios por la niebla y humo en el escenario<sup>19,26,35,38,43</sup>. En este sentido, el personal responsable de las compañías debería asesorarse por profesionales de prevención de riesgos laborales, ayudando así a que los bailarines y bailarinas trabajen en óptimas condiciones de seguridad, según lo permitan las características del teatro.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">Por otra parte, el profesional de la danza suele considerar la lesión como algo intrínseco a su profesión, y la mayoría de estos sufren varias lesiones importantes durante su carrera<sup>89</sup>. Tales son las exigencias cuantitativas y escaso control sobre el tiempo de trabajo que, con frecuencia, acuden tarde a buscar un adecuado diagnóstico y tratamiento. Se acostumbra a bailar con la lesión y con el dolor<sup>90</sup> y esto convierte lesiones inicialmente leves en crónicas, lo que puede acabar con su carrera profesional<sup>91</sup>.</font></p>     <p><font face="Verdana" size="2">Los factores psicosociales que más se relacionan con la ocurrencia de lesiones son las exigencias psicosociales, la tensión anterior a la actuación y la inseguridad derivada de la inestabilidad laboral. Además, la contratación discontinua provoca que los profesionales de la danza que tienen un trabajo temporal alternen intensas jornadas de trabajo (hasta de 8 horas diarias) con períodos de inactividad<sup>92</sup>. Las lesiones provocadas podrían considerarse accidentes de trabajo. En este sentido, en un estudio se han clasificado las posibles causas de lesiones como causas físicas, psicosociales o ambientales<sup>38</sup>. Sin embargo, sólo un artículo menciona la posibilidad de que la lesión estudiada se considere como consecuencia del trabajo<sup>11</sup> y otro menciona a la medicina del trabajo como la especialidad médica que debe ocuparse de estas lesiones<sup>20</sup>.</font></p>     <p><font face="Verdana" size="2">En este mismo sentido, algunos de los estudios sí han considerado el hecho de que los bailarines que disponen de un seguro de asistencia o de un servicio médico propio de la compañía en la que trabajan, tienen menos lesiones que los bailarines que no contaban con estos prestaciones<sup>18,20,38</sup>. Otras investigaciones afirman que la presencia de profesionales implicados en medicina de la danza en la propia compañía de baile contribuyen a la disminución de los costes de empresa por lesiones<sup>17,20,26,28</sup>. En este sentido, se comprende que sea la propia dirección de la compañía de baile quién subvencione algunos estudios para comprobar la eficacia de dichas prestaciones<sup>15,34, 35,39</sup>.</font></p>     <p><font face="Verdana" size="2">Desde la salud laboral destacan algunos estudios que exploran las causas de las lesiones provocadas por el ejercicio de la danza como profesión, con el objetivo de trabajar sobre la prevención de éstas:<sup>11,12,15,17,19,20,22,23,26,28,34,35,36,43</sup>. La identificación de los factores de riesgo de lesiones permitiría proponer acciones preventivas en las escuelas de danza profesional.</font></p>     <p><font face="Verdana" size="2">Algunos estudios señalan de forma consistente que la práctica de la danza de forma profesional puede ser un factor de riesgo en la manifestación de trastornos de la alimentación<sup>63,74,79,80,84</sup>, menstruación<sup>54,82,86</sup> y densidad ósea<sup>51,55,56,58-62,67,68,71,73,75,81</sup>. Estos hallazgos se relacionan directamente con investigaciones realizadas con deportistas de alto rendimiento, que debido a las exigencias físicas se pueden comparar a los profesionales de la danza. Los resultados de estos trabajos sugieren la presencia de una triada de síntomas que incluye los trastornos alimentarios, amenorrea y osteoporosis. Esta triada se ha relacionado con la exigencia común que tienen estos deportistas y bailarines de mantener un peso excesivamente bajo<sup>96, 97,95,94,95</sup>.</font></p>     <p><font face="Verdana" size="2">Los trastornos de la alimentación, y consecuente con ellos, la alteración menstrual, quizás no nazcan únicamente del ejercicio profesional sino por la presión de los estándares estéticos en la danza, es decir, la exigencia de mantener un peso corporal bajo en esta profesión. Las bailarinas han de ser etéreas<sup>86,93,94,95</sup>. Además, tanto bailarinas como bailarines, con el entrenamiento deberían adquirir una composición corporal característica para poder realizar de forma adecuada las exigencias de la técnica<sup>96</sup>.</font></p>     <p><font face="Verdana" size="2">Según diversos estudios, la distorsión de la imagen corporal no difiere mucho de los grupos de control, integrados en este caso, por bailarines en formación, adolescentes, alumnos de escuelas de modelos y deportistas<sup>53,72,77,79,99</sup>. Sin embargo, afecta más a las bailarinas aspirantes<sup>53,79</sup> que a las profesionales<sup>72</sup> aunque éstas afirman que el control de su peso es eje central de su vida<sup>77</sup>.</font></p>     <p><font face="Verdana" size="2">Es necesario que las investigaciones tomen en cuenta, tanto los elementos derivados de las condiciones del trabajo de bailarines y bailarinas, como las propias exigencias físicas de la danza, a fin de explicar mejor los factores que alteran la salud de estos profesionales. Desde una mirada de Salud Laboral se deben emprender investigaciones sobre esta problemática, teniendo en cuenta la exposición a riesgos laborales, su prevención y las posibles medidas correctoras. De esta misma forma, los estudios epidemiológicos deben tener criterios comunes que permitan la comparación de resultados y así potenciar la utilidad de sus hallazgos.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Bibliografía</b></font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana" size="2">1. Calvo JB. Apuntes para una anatomía aplicada a la danza. Madrid: Librerías Deportivas Esteban Sanz Martínez SL; 2001.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666343&pid=S1135-5727200900040000400001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">2. Pasi MS, Agostíni A. El Ballet. Enciclopedia del Arte coreográfico. Madrid: Aguilar S.A. Ediciones; 1980. p. 7-39.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666344&pid=S1135-5727200900040000400002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">3. Abad-Carlés A. Historia del ballet y de la danza moderna. Madrid: Alianza Editorial; 2004. p. 15-36.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666345&pid=S1135-5727200900040000400003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">4. Anzo AS. Entre el Arte y las lesiones. El Médico. 1987; 229:40-47.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666346&pid=S1135-5727200900040000400004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">5. Milan KR. Injury in ballet: a review of relevant topics for the physical therapist. J Orthop Sports Phys Ther. 1994; 19 (2): 121-129.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666347&pid=S1135-5727200900040000400005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">6. Kaufman BA, Warren MP, Dominguez JE, Wang J, Hyemsfield SB, Pierson RN. Bone Density and Amenorrhea in Ballet Dancers Are Related to a Decreased Resting Metabolic Rate and Lower Leptin Levels. J Clin Endocrinol Metab. 2002; 87(6):2777-2783.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666348&pid=S1135-5727200900040000400006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">7. Robinson D, Zander J, Research B.C. Preventing Musculoskeletal Injury (MSI) for Musicians and Dancers. Vancouver: SHAPE (Safety and Health in Arts Production and Entertainment); 2002. &#091;Citado 26 Febrero 2009&#093; Disponible en: <a target="_blank" href="http://www.shape.bc.ca/resources/pdf/msi.pdf">http://www.shape.bc.ca/resources/pdf/msi.pdf</a></font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666349&pid=S1135-5727200900040000400007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">8. González de la Valle A. ¿Por qué y cómo se producen las lesiones ortopédicas en el Bailarín? Danza Hoy (Edición electrónica). 2002; 5. &#091;Citado 26 Febrero 2009&#093; Disponible en: <a target="_blank" href="http://danzahoy.com/pages/edicion_05/paginas/actualidad.php">http://danzahoy.com/pages/edicion_05/paginas/actualidad.php</a></font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5666350&pid=S1135-5727200900040000400008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p><font face="Verdana" size="2">9. García Castillejo P. Anorexia y Danza. En: Danza y Medicina: Las actas de un encuentro. Juan Bosco Calvo y Victor Burell (Eds). 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<body><![CDATA[<p>&nbsp;</p>     <p><font face="Verdana" size="2"><b><a href="#top"><img border="0" src="/img/revistas/resp/v83n4/seta.gif" width="15" height="17"></a> <a name="bajo"></a>Dirección para correspondencia:</b>    <br>Esther Román Fuentes    <br>Servicio de Prevención. Ayuntamiento de Elche    <br>Carrer Animes N º4. C.P 03022. Elche. Alicante.    <br>Correo electrónico: <a href="mailto:esther-baila@hotmail.com">esther-baila@hotmail.com</a></font></p>      ]]></body><back>
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