<?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>1659-097X</journal-id>
<journal-title><![CDATA[MHSalud]]></journal-title>
<abbrev-journal-title><![CDATA[MHSalud]]></abbrev-journal-title>
<issn>1659-097X</issn>
<publisher>
<publisher-name><![CDATA[Escuela de Ciencias del Movimiento Humano y Calidad de Vida, Universidad Nacional]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-097X2025000100189</article-id>
<article-id pub-id-type="doi">10.15359/mhs.22-1.18344</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características físicas de jugadores de fútbol americano, según su posición de juego, pertenecientes a un club de la región del Biobío]]></article-title>
<article-title xml:lang="en"><![CDATA[Physical characteristics of American Football Players, according to their playing position, Belonging to a Club in the Biobío Region]]></article-title>
<article-title xml:lang="pt"><![CDATA[Características físicas dos Jogadores de Futebol Americano, de Acordo com sua Posição em Campo, Pertencentes a um Clube na Região do Biobío]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos-Campos]]></surname>
<given-names><![CDATA[Kevin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acevedo Lagos]]></surname>
<given-names><![CDATA[Matías]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castelli Correia de Campos]]></surname>
<given-names><![CDATA[Luis Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Texeira Fabricio dos Santos]]></surname>
<given-names><![CDATA[Luiz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cossio-Bolaños]]></surname>
<given-names><![CDATA[Marco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luarte-Rocha]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Adventista de Chile  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad San Sebastián  ]]></institution>
<addr-line><![CDATA[Santiago ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Biobío  ]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad del Biobío  ]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Católica del Maule  ]]></institution>
<addr-line><![CDATA[Talca ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad de Concepción  ]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidad San Sebastián  ]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2025</year>
</pub-date>
<volume>22</volume>
<numero>1</numero>
<fpage>189</fpage>
<lpage>207</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-097X2025000100189&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-097X2025000100189&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-097X2025000100189&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  El fútbol americano es un deporte de alta exigencia física, en el cual el rendimiento de los jugadores depende, en gran medida, de la fuerza, potencia y agilidad, atributos que varían según la posición ocupada en el campo. Si bien numerosas investigaciones han caracterizado estas diferencias posicionales, la evidencia sigue siendo limitada en regiones donde el deporte aún se encuentra en desarrollo, como es el caso de Chile.  Objetivo:  Comparar las cualidades físicas de los jugadores de fútbol americano de un club de la región de Biobío, según sus posiciones de juego.  Metodología:  Participaron 22 atletas masculinos de fútbol americano (21.6 ± 4.6 años) y se dividieron en tres grupos, es decir, jugadores linieros (LM), jugadores de habilidad (SP) y jugadores de gran habilidad (BSP). Para la evaluación de las cualidades físicas, se utilizaron las pruebas del Combine NFL.  Resultados:  Los resultados establecen que se presentaron diferencias significativas entre los jugadores BSP y LM en la prueba de potencia de extremidades inferiores (215 ± 21 cm versus 187 ± 12 cm, respectivamente, p = 0.019). Por otra parte, se destaca que en las pruebas de agilidad los atletas SP evidenciaron mejores resultados que los LM (3 cone drill: 8.6 ± 0.3 s versus 9.4 ± 0.4 s, respectivamente, p = 0.045 y Pro-agility drill: 4.4 ± 0.1 s versus 4.9 ± 0.3 s, respectivamente, p = 0.012). Asimismo, se observó que, en la prueba de potencia, los SP obtuvieron mejores resultados en comparación a los LM. Por otra parte, en la prueba de fuerza máxima para extremidades inferiores, los BSP alcanzaron mejores resultados que los de las demás posiciones, aunque el efecto de esta diferencia es pequeño.  Conclusión:  Se concluye que los atletas del club de la región del Biobío presentan características específicas, según su posición en el campo de juego. Sin embargo, los jugadores LM mostraron un rendimiento significativamente inferior al esperado en términos de fuerza máxima, de acuerdo con sus funciones en el campo de juego.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  American football is a sport of high physical demand, where the performance of players largely depends on strength, power, and agility -attributes that vary according to the position occupied on the field-. While numerous studies have characterized these positional differences, the evidence remains limited in regions where the sport is still developing, such as Chile.  Objective:  To compare the physical qualities of American football players of a club in the Biobío region, according to their playing positions.  Methodology:  22 male American soccer athletes (21.6±4.6 years) participated and were divided into three groups, i.e., linemen (LM), skill players (SP) and high skill players (BSP). For the evaluation of physical qualities, the NFL Combine tests were used.  Results:  The results show that there were significant differences between BSP and LM players in the lower extremity power test (215±21 cm versus 187±12 cm, respectively, p=0.019). On the other hand, it is highlighted that in the agility tests the SP athletes presented better results than the LM (3 cone drill: 8.6±0.3 s versus 9.4±0.4 s, respectively, p=0.045 and Pro-agility drill: 4.4±0.1 s versus 4.9±0.3 s, respectively, p=0.012). Likewise, it was observed that, in the power test, SP got better results compared to LM. On the other hand, in the maximum strength test for lower extremities, the BSP reached better results than the other positions, although the effect of this difference is small.  Conclusion:  It is concluded that the athletes of the Biobío region club present specific characteristics according to their position on the playing field. However, LM players showed a significantly lower performance than expected in terms of maximal strength, attending to their roles on the playing field.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução:  O futebol americano é um esporte de alta exigência física, onde o desempenho dos jogadores depende em grande medida da força, potência e agilidade, atributos que variam de acordo com a posição ocupada no campo. Embora inúmeras pesquisas tenham caracterizado essas diferenças posicionais, as evidências ainda são limitadas em regiões onde o esporte ainda está em desenvolvimento, como é o caso do Chile.  Objetivo:  Comparar as qualidades físicas dos jogadores de futebol americano de um clube na região do Biobío, de acordo com suas posições em campo.  Metodologia:  22 atletas masculinos de futebol americano (21.6±4.6 anos) participaram e foram divididos em três grupos: linemen (LM), skill players (SP) e high skill players (BSP). Para a avaliação das qualidades físicas, foram utilizados os testes do NFL Combine.  Resultados:  Os resultados mostraram que houve diferenças significativas entre os jogadores BSP e LM no teste de potência dos membros inferiores (215±21 cm versus 187±12 cm, respectivamente, p=0.019). Por outro lado, destaca-se que, nos testes de agilidade, os atletas SP apresentaram melhores resultados que os jogadores LM (teste dos 3 cones: 8.6±0.3 s versus 9.4±0.4 s, respectivamente, p=0.045 e teste Pro-agility: 4.4±0.1 s versus 4.9±0.3 s, respectivamente, p=0.012). Da mesma forma, foi observado que, no teste de potência, SP obtiveram melhores resultados em comparação com os LM. Por outro lado, no teste de força máxima para membros inferiores, BSP obtiveram melhores resultados do que as outras posições, embora o efeito dessa diferença seja pequeno.  Conclusão:  Conclui-se que os atletas do clube da região do Biobío apresentam características específicas de acordo com sua posição no campo de jogo. No entanto, os jogadores LM apresentaram um desempenho significativamente inferior ao esperado em termos de força máxima, de acordo com seus papéis no campo de jogo.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fútbol americano]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="es"><![CDATA[fuerza]]></kwd>
<kwd lng="es"><![CDATA[velocidad]]></kwd>
<kwd lng="en"><![CDATA[football]]></kwd>
<kwd lng="en"><![CDATA[performance]]></kwd>
<kwd lng="en"><![CDATA[strength]]></kwd>
<kwd lng="en"><![CDATA[speed]]></kwd>
<kwd lng="pt"><![CDATA[futebol]]></kwd>
<kwd lng="pt"><![CDATA[desempenho]]></kwd>
<kwd lng="pt"><![CDATA[força]]></kwd>
<kwd lng="pt"><![CDATA[velocidade]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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