<?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>S1659-097X2025000100295</article-id>
<article-id pub-id-type="doi">10.15359/mhs.22-1.18398</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comparación de la velocidad de arranque con y sin uso de la banderola reglamentaria en árbitros asistentes de fútbol profesional]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparison of starting speed with and without the use of the regulatory flag in professional soccer assistant referees]]></article-title>
<article-title xml:lang="pt"><![CDATA[Comparação da velocidade de arrancada com e sem o uso da bandeira de arbitragem em árbitros assistentes do futebol profissional]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escobar-Díaz]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Araya-Astudillo]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Narváez]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Metropolitana de Ciencias de la Educación  ]]></institution>
<addr-line><![CDATA[Ñuñoa ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Asociación Nacional de Fútbol Profesional  ]]></institution>
<addr-line><![CDATA[Peñalolén ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Andres Bello  ]]></institution>
<addr-line><![CDATA[Santiago ]]></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>295</fpage>
<lpage>315</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-097X2025000100295&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-097X2025000100295&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-097X2025000100295&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  El sprint en el fútbol es una acción motora frecuente y determinante. Los árbitros asistentes profesionales utilizan este desplazamiento, especialmente en jugadas claves del partido.  Objetivo:  Analizar el rendimiento en velocidad de arranque para un tramo de 10 metros lineales en árbitros asistentes profesionales, con y sin uso de banderola.  Metodología:  Se aplicó un diseño de tipo cuantitativo, explicativo, correlacional de corte transversal en 42 sujetos (4 mujeres: 37 + 1,41 años, 1,6 + 0,03 m, 56,58 + 3,65 kg - 38 hombres: 36,11 + 4,57 años, 1,74 + 0,05 m, 72,77 + 7,13 kg) pertenecientes a la Asociación Nacional de Fútbol Profesional en Chile. Se solicitaron 3 sprints sin y con banderola, registrándose el tiempo con fotoceldas Witty-Gate de Microgate.  Resultados:  En varones se presentaron diferencias significativas en un par de registros para el análisis grupal y por categoría (p&lt;0,05), además de un comportamiento en forma de curva cúbica en las ecuaciones de regresión para velocidad y edad. Sin embargo, los datos en general, establecieron que existiría un rendimiento en velocidad homogéneo en los árbitros asistentes durante los sprints con y sin uso de banderola; en el caso de las árbitras asistentes, solo se realizó un análisis descriptivo por el tamaño de la muestra.  Conclusión:  El uso de la banderola en un grupo de árbitros asistentes profesionales no influiría en la velocidad de arranque para un tramo de 10 metros, considerando que es un elemento de uso obligatorio en partidos de fútbol e implica adecuar la técnica de carrera.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Sprinting in soccer is a frequent and determinant motor action. Professional assistant referees use this movement, especially in key plays of the match.  Objective:  To analyze the starting speed performance for a 10-meter linear stretch in professional assistant referees, with and without the use of a flag.  Methodology:  A quantitative, explanatory, correlational cross-sectional design was applied to 42 subjects (4 women: 37 + 1.41 years, 1.6 + 0.03 m, 56.58 + 3.65 kg - 38 men: 36.11 + 4.57 years, 1.74 + 0.05 m, 72.77 + 7.13 kg) belonging to the National Association of Professional Soccer in Chile. Three sprints were requested without and with flag, and the time was recorded with Microgate Witty-Gate photocells.  Results:  In males, there were significant differences in a couple of registers for the group analysis and by category (p&lt;0.05), in addition to a cubic curve behavior in the regression equations for speed and age. However, the data in general established that there would be a homogeneous speed performance in the assistant referees during the sprints with and without the use of the flag; in the case of the female assistant referees, only a descriptive analysis was performed due to the size of the sample.  Conclusion:  The use of the flag in a group of professional assistant referees would not influence the starting speed for a 10-meter stretch, considering that it is an element of compulsory use in soccer matches and implies adapting the running technique.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução:  O sprint no futebol é uma ação motora frequente e determinante. Árbitros assistentes profissionais utilizam esse movimento especialmente em jogadas-chave da partida.  Objetivo:  Analisar o desempenho da velocidade de arrancada em um trecho linear de 10 metros em árbitros assistentes profissionais, com e sem o uso da bandeira de arbitragem.  Metodologia:  Foi aplicado um desenho quantitativo, explicativo, correlacional e transversal com 42 participantes (4 mulheres: 37 ± 1,41 anos, 1,60 ± 0,03 m, 56,58 ± 3,65 kg - 38 homens: 36,11 ± 4,57 anos, 1,74 ± 0,05 m, 72,77 ± 7,13 kg), pertencentes à Associação Nacional de Futebol Profissional do Chile. Foram solicitadas três corridas de arrancada sem e com a bandeira, e o tempo foi registrado com células fotoelétricas Microgate Witty-Gate.  Resultados:  Nos homens, observaramse diferenças significativas em alguns registros na análise grupal e por categoria (p&lt;0,05), além de um comportamento de curva cúbica nas equações de regressão entre velocidade e idade. No entanto, os dados gerais indicaram que o desempenho de velocidade dos árbitros assistentes seria homogêneo nas corridas com e sem o uso da bandeira; no caso das árbitras assistentes, foi realizada apenas uma análise descritiva devido ao tamanho da amostra.  Conclusão:  O uso da bandeira em um grupo de árbitros assistentes profissionais não influenciaria a velocidade de arrancada em um trecho de 10 metros, considerando que é um elemento de uso obrigatório nas partidas de futebol e implica uma adaptação na técnica de corrida.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[arbitraje]]></kwd>
<kwd lng="es"><![CDATA[árbitros asistentes]]></kwd>
<kwd lng="es"><![CDATA[bandera de arbitraje]]></kwd>
<kwd lng="es"><![CDATA[biomecánica deportiva]]></kwd>
<kwd lng="es"><![CDATA[desempeño físico]]></kwd>
<kwd lng="es"><![CDATA[fútbol]]></kwd>
<kwd lng="es"><![CDATA[sprint]]></kwd>
<kwd lng="es"><![CDATA[velocidad]]></kwd>
<kwd lng="en"><![CDATA[assistant referees]]></kwd>
<kwd lng="en"><![CDATA[referee flag]]></kwd>
<kwd lng="en"><![CDATA[physical performance]]></kwd>
<kwd lng="en"><![CDATA[refereeing]]></kwd>
<kwd lng="en"><![CDATA[soccer]]></kwd>
<kwd lng="en"><![CDATA[speed]]></kwd>
<kwd lng="en"><![CDATA[sports biomechanics]]></kwd>
<kwd lng="en"><![CDATA[sprint]]></kwd>
<kwd lng="pt"><![CDATA[arbitragem]]></kwd>
<kwd lng="pt"><![CDATA[árbitros assistentes]]></kwd>
<kwd lng="pt"><![CDATA[bandeira de arbitragem]]></kwd>
<kwd lng="pt"><![CDATA[biomecânica esportiva]]></kwd>
<kwd lng="pt"><![CDATA[desempenho físico]]></kwd>
<kwd lng="pt"><![CDATA[futebol]]></kwd>
<kwd lng="pt"><![CDATA[sprint]]></kwd>
<kwd lng="pt"><![CDATA[velocidade]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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