<?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>1996-2452</journal-id>
<journal-title><![CDATA[Podium. Revista de Ciencia y Tecnología en la Cultura Física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Podium]]></abbrev-journal-title>
<issn>1996-2452</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Pinar del Río Hermanos Saíz Montes de Oca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1996-24522021000200408</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[La fase excéntrica-concéntrica y el índice de fuerza reactiva en el salto con contra movimiento en voleibolistas]]></article-title>
<article-title xml:lang="pt"><![CDATA[A fase excêntrica-concêntrica e o índice de força reativa no salto de contra-movimento nos jogadores de vôlei]]></article-title>
<article-title xml:lang="en"><![CDATA[The eccentric-concentric phase and the index of strength reactivates in the jump with counter movement in volleyball players]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Delgado]]></surname>
<given-names><![CDATA[Idolo Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Hernández]]></surname>
<given-names><![CDATA[Tania Rosa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz Luaces]]></surname>
<given-names><![CDATA[Yumilka Daisy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Investigaciones Deporte Cubano (CIDC).  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Pinar del Río "Hermanos Saíz Montes de Oca" Facultad de Cultura Física "Nancy Uranga Romagoza". ]]></institution>
<addr-line><![CDATA[Pinar del Río ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>16</volume>
<numero>2</numero>
<fpage>408</fpage>
<lpage>422</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1996-24522021000200408&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1996-24522021000200408&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1996-24522021000200408&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El trabajo que se presenta tiene como objetivo analizar la relación existente entre la fase excéntrica-concéntrica y el índice de fuerza reactiva en el salto vertical con contra movimiento del equipo de voleibol, de la primera categoría de La Habana. Para ello, se hace referencia al significado de los diferentes componentes de la contracción muscular en la actividad deportiva, así como otros tipos de contracciones musculares para el trabajo dinámico. Los métodos empleados fueron de nivel teórico y empírico, tales como histórico-lógico, inductivo-deductivo, análisis-síntesis, revisión documental, la medición y los matemáticos-estadísticos; estos últimos para la tabulación y arribo de resultados. Se utilizó el método de puntuación de McCall para determinar la evaluación de los indicadores seleccionados, donde se tiene en cuenta los valores observados por encima de la media, los cuales tienen puntuaciones estándar positivas, mientras que los valores por debajo de la media tienen puntuaciones estándar negativas. Se realiza una comparación con otras investigaciones, sobrepasando en el caso de los varones por 0.8 cm. Con respecto a la media cubana, hay una diferencia de 0.7 cm. con respecto a la media española de 0.13 cm. y al analizar la referencia internacional, la diferencia está entre 8 y 13 cm. La información alcanzada facilitó la correcta planificación y su intensificación en las cargas con pesas en la zona de fuerza máxima, rápida y explosiva para el incremento del salto vertical en los atletas de voleibol, reflejado en el resultado competitivo del equipo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO O objetivo deste trabalho é analisar a relação entre a fase excêntrica-concêntrica e o índice de força reativa no salto vertical com contra-movimento da equipe de vôlei da primeira categoria de Havana. Para este fim, é feita referência ao significado dos diferentes componentes da contração muscular na atividade esportiva, assim como outros tipos de contrações musculares para o trabalho dinâmico. Os métodos utilizados foram de nível teórico e empírico, tais como histórico-lógico, indutivo-dedutivo, análise-síntese, revisão documental, medição e matemática-estatística; este último para a tabulação e chegada dos resultados. O método de pontuação de McCall foi usado para determinar a avaliação dos indicadores selecionados, onde os valores observados acima da média são levados em consideração, que têm pontuação padrão positiva, enquanto os valores abaixo da média têm pontuação padrão negativa. É feita uma comparação com outras pesquisas, superando em 0,8 cm no caso dos homens. Em relação à média cubana, há uma diferença de 0,7 cm. em relação à média espanhola de 0,13 cm. e quando se analisa a referência internacional, a diferença está entre 8 e 13 cm. As informações obtidas facilitaram o planejamento correto e sua intensificação nas cargas com pesos na zona de força máxima, rápida e explosiva para o aumento do salto vertical em atletas de vôlei, refletido no resultado competitivo da equipe.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The aim of this work is to analyze the relationship between the eccentric-concentric phase and the reactive strength index in the vertical jump with countermovement of the first category volleyball team in Havana. For this purpose, reference is made to the meaning of the different components of muscular contraction in sports activity, as well as other types of muscular contractions for dynamic work. The methods used were theoretical and empirical, such as historical-logical, inductive-deductive, analysis-synthesis, documentary review, measurement and mathematical-statistical; the latter for the tabulation and arrival of results. McCall's scoring method was used to determine the evaluation of the selected indicators, where the values observed above the mean are taken into account, which have positive standard scores, while the values below the mean have negative standard scores. A comparison is made with other research, exceeding in the case of males by 0.8 cm. With respect to the Cuban average, there is a difference of 0.7 cm. with respect to the Spanish average of 0.13 cm. and when analyzing the international reference, the difference is between 8 and 13 cm. The information achieved facilitated the correct planning and its intensification in the loads with weights in the zone of maximum, fast and explosive strength for the increase of the vertical jump in volleyball athletes, reflected in the competitive result of the team.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fase excéntrica-concéntrica]]></kwd>
<kwd lng="es"><![CDATA[Índice de fuerza reactiva]]></kwd>
<kwd lng="es"><![CDATA[Salto vertical]]></kwd>
<kwd lng="es"><![CDATA[Salto con contra movimiento]]></kwd>
<kwd lng="es"><![CDATA[Voleibol.]]></kwd>
<kwd lng="pt"><![CDATA[Fase excêntrica-concêntrica]]></kwd>
<kwd lng="pt"><![CDATA[Índice de força reativa]]></kwd>
<kwd lng="pt"><![CDATA[Salto vertical]]></kwd>
<kwd lng="pt"><![CDATA[Salto de contra-movimento]]></kwd>
<kwd lng="pt"><![CDATA[Vôlei.]]></kwd>
<kwd lng="en"><![CDATA[Eccentric-concentric phase]]></kwd>
<kwd lng="en"><![CDATA[Reactive strength index]]></kwd>
<kwd lng="en"><![CDATA[Vertical jump]]></kwd>
<kwd lng="en"><![CDATA[Jump with counter movement]]></kwd>
<kwd lng="en"><![CDATA[Volleyball.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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