<?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>1659-4436</journal-id>
<journal-title><![CDATA[Pensar en Movimiento: Revista de ciencias del ejercicio y la salud]]></journal-title>
<abbrev-journal-title><![CDATA[Pensar en Movimiento]]></abbrev-journal-title>
<issn>1659-4436</issn>
<publisher>
<publisher-name><![CDATA[Escuela de Educación Física de la Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-44362020000100164</article-id>
<article-id pub-id-type="doi">10.15517/pensarmov.v18i1.37753</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Potencia y actividad electromiográfica en voleibolistas universitarios]]></article-title>
<article-title xml:lang="en"><![CDATA[Power and electromyographic activity in college volleyball players]]></article-title>
<article-title xml:lang="pt"><![CDATA[Potência e atividade eletromiográfica em jogadores de vôlei universitários]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aedo-Muñoz]]></surname>
<given-names><![CDATA[Esteban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A4"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamayo Contreras]]></surname>
<given-names><![CDATA[Valentin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Reyes]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Wimmer]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brito]]></surname>
<given-names><![CDATA[Ciro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miarka]]></surname>
<given-names><![CDATA[Bianca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arghoty Bucheli]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dal Bello]]></surname>
<given-names><![CDATA[Fabio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Valenzuela]]></surname>
<given-names><![CDATA[Tomás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Santiago de Chile  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Santo Tomás Facultad de Salud Escuela de Ciencias del Deporte y Actividad Física]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Metropolitana de Ciencias de la Educación Departamento de Educación Física, Deportes y Recreación ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Federal de Juiz de Fora Programa de Posgrado en Educación Física ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Federal de Juiz de Fora Programa de Posgrado en Educación Física ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Escuela Militar de Cadetes José María Córdova  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>18</volume>
<numero>1</numero>
<fpage>164</fpage>
<lpage>179</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-44362020000100164&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-44362020000100164&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-44362020000100164&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El propósito del estudio fue determinar la potencia relativa del miembro inferior y actividad electromiográfica de superficie (EMGs) del glúteo mayor (GM), vasto medial (VM), vasto lateral (VL) y gastrocnemio lateral (GASLAT), durante un salto contramovimiento (CMJ) y un salto Abalakov (ABK). Un total de 24 voleibolistas universitarios se dividieron en dos grupos iguales asignados por el nivel de competencia: el grupo 1 (G1), compuesto por voleibolistas de 1ª división universitaria y el grupo 2 (G2), compuesto por voleibolistas de 2ª división universitaria. Cada uno fue sometido a dos evaluaciones simultáneas de potencia y EMGs. Para la potencia se utilizó un sistema de grabación en 2D, por medio de un seguimiento del trocánter mayor con una cámara de 250 fps. Esta grabación se sometió a una medición por medio de software (Tracker&#61650;), para obtener los valores de potencia absoluta. La EMGs se realizó por medio de un electromiógrafo Delsys Trigno&#61650; en los músculos GM, VM, VL y GASLAT. Se presentaron diferencias significativas en %PeakRMS del VL (G1=65.2&#61617;10.2; G2=54.0±11.7 %PeakRMS; p&lt;0.05) en CMJ, mientras que en ABK presentaron diferencias significativas VL (G1=69.6±17.3; G2=55.1±12.3 %PeakRMS; p&lt;0.05) y GASLAT (G1=61.4±13.4; G2=50.6±7.2 %PeakRMS; p&lt;0.05), para la potencia relativa no se presentaron diferencias significativas entre CMJ (p&gt;0.05) y ABK (p&gt;0.05). G.=50.6±7.2 %PeakRMS; p&lt;0.05), para la potencia relativa no se presentaron diferencias significativas entre CMJ (p&gt;0.05) y ABK (p&gt;0.05).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The purpose of this study was to determine the relative power of lower limbs and the surface electromyographic activity (EMG) of the gluteus maximus (GM), vastus medialis (VM), vastus lateralis (VL), and lateral gastrocnemius (GASLAT) during a countermovement jump (CMJ) and an Abalakov jump (ABK). Twenty-four college volleyball players were divided into two equal groups assigned by division: Group 1 (G1), comprised of volleyball players from the 1st university division, and Group 2 (G2), comprised of volleyball players from the 2nd university division. Both groups took two simultaneous EMG and power assessments. For the power assessment, a 2D recording system was used to track the greater trochanter with a 250fps camera. The video was analyzed with the Tracker 4.96 software to obtain absolute power values. The EMG activity was measured using a Delsys Trigno® electromyograph in the GM, VM, VL, and GASLAT muscles. Significant differences were found in %PeakRMS of VL (G1=65.2&#61617;10.2; G2=54.0±11.7 %PeakRMS; p&lt;0.05) for CMJ, as well as in VL (G1=69.6±17.3; G2=55.1±12.3 %PeakRMS; p&lt;0.05) for ABK and GASLAT (G1=61.4±13.4; G2=50.6±7.2 %PeakRMS; p&lt;0.05). Regarding relative power, no significant differences were present between CMJ (p&gt; 0.05) and ABK (p&gt;0.05).]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Este estudo teve como objetivo determinar a potência relativa do membro inferior e atividade eletromiográfica (EMG) de superfície do glúteo máximo (GM), vasto medial (VM), vasto lateral (VL) e gastrocnêmio lateral (GASLAT) durante um salto contramovimento (CMJ) e um salto Abalakov (ABK). No total foram 24 jogadores de vôlei universitários divididos em dois grupos iguais, determinados pelo nível de competição: o grupo 1 (G1), composto por jogadores de 1ª divisão universitária e o grupo 2 (G2), composto por jogadores de vôlei de 2ª divisão universitária. Cada um foi submetido a duas avaliações simultâneas de potência e EMG de superfície. Para a potência foi utilizada um sistema de gravação 2D, por meio de um segmento do trocânter maior com uma câmara de 250 Fps. Essa gravação foi submetida a uma medição por meio de software (Tracker&#61650;), para obter os valores de potência absoluta. A EMG de superfície foi realizada por meio do aparelho de eletromiografia Delsys Trigno&#61650; nos músculos GM, VM, VL e GASLAT. Houve diferenças significativas em %PeakRMS do VL (G1=65,2&#61617;10,2; G2=54,0±11,7 %PeakRMS; p&lt;0,05) em CMJ, enquanto o ABK apresentou diferenças significativas no VL (G1=69,6±17,3; G2=55,1±12,3 %PeakRMS; p&lt;0,05) e GASLAT (G1=61,4±13,4; G2=50,6±7,2 %PeakRMS; p&lt;0,05), com relação à potência relativa não houve diferenças significativas entre CMJ (p&gt;0,05) e ABK (p&gt;0,05).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[electromiografía de superficie]]></kwd>
<kwd lng="es"><![CDATA[potencia]]></kwd>
<kwd lng="es"><![CDATA[salto vertical]]></kwd>
<kwd lng="es"><![CDATA[voleibol]]></kwd>
<kwd lng="en"><![CDATA[surface electromyography]]></kwd>
<kwd lng="en"><![CDATA[power]]></kwd>
<kwd lng="en"><![CDATA[vertical jump]]></kwd>
<kwd lng="en"><![CDATA[volleyball]]></kwd>
<kwd lng="pt"><![CDATA[eletromiografia de superfície]]></kwd>
<kwd lng="pt"><![CDATA[potência]]></kwd>
<kwd lng="pt"><![CDATA[salto vertical]]></kwd>
<kwd lng="pt"><![CDATA[vôlei]]></kwd>
</kwd-group>
</article-meta>
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