<?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>1578-2549</journal-id>
<journal-title><![CDATA[Archivos de Prevención de Riesgos Laborales]]></journal-title>
<abbrev-journal-title><![CDATA[Arch Prev Riesgos Labor]]></abbrev-journal-title>
<issn>1578-2549</issn>
<publisher>
<publisher-name><![CDATA[Societat Catalana de Salut Laboral y Asociación de Medicina del Trabajo de la Comunidad Valenciana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1578-25492021000100034</article-id>
<article-id pub-id-type="doi">10.12961/aprl.2021.24.01.04</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de la Frecuencia Cardiaca relacionada con las variables de altura y frecuencia en el Levantamiento de cargas]]></article-title>
<article-title xml:lang="en"><![CDATA[Analysis of Heart Rate related to height and frequency of manual lifting]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saavedra-Robinson]]></surname>
<given-names><![CDATA[Luis A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paredes-Astudillo]]></surname>
<given-names><![CDATA[Yenny A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quintana]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Pontificia Universidad Javeriana Facultad de ingeniería Departamento de ingeniería industrial]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Institución Universitaria Politécnico Grancolombiano Departmento de ingeniería industrial ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>24</volume>
<numero>1</numero>
<fpage>34</fpage>
<lpage>46</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1578-25492021000100034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1578-25492021000100034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1578-25492021000100034&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo:  Analizar los efectos de las variables altura vertical y la frecuencia de levantamiento sobre la frecuencia cardiaca en trabajadores en la tarea de levantamiento de cargas.  Método:  Diseño experimental factorial con bloques, considerando como variables independientes la altura vertical y la frecuencia de levantamiento y la dependiente la frecuencia cardiaca. El experimento se desarrolló con 20 trabajadores entre 18 y 40 años con al menos seis meses de experiencia en tareas de almacén y empaque en una empresa de productos lácteos. Se calculó el coeficiente FRIMAT para determinar la carga fisiológica de la tarea.  Resultados:  Existe un efecto significativo sobre la respuesta de la frecuencia cardiaca debido a la interacción de la frecuencia y la altura vertical del levantamiento. Además, basados en el coeficiente FRIMAT, se obtuvo una calificación de &#8220;carga de trabajo mínima&#8221; para el 85% de los tratamientos, y en un tratamiento, se presentó una calificación de &#8220;algo difícil&#8221;.  Conclusiones:  La altura y frecuencia de levantamiento no actúan de manera independiente y tienen un efecto sobre la carga fisiológica del trabajador en el levantamiento manual de cargas manifestada en la frecuencia cardiaca.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective:  To analyze the effects of vertical height and lifting frequency on the physiological response in workers during lifting of loads.  Methods:  Factorial experimental design with blocks, considering vertical height and lifting frequency as independent variables; the dependent variable was defined as the heart rate. The experiment was conducted in 20 workers between the ages of 18 and 40 years with at least six months of experience in warehouse and packaging tasks at a dairy products company. We calculated the FRIMAT coefficient to determine the physiological load of the task.  Results:  We found a significant effect on the heart rate response due to the interaction of the rate and the vertical height of the lift. Based on the FRIMAT coefficient, we obtained a rating of &#8220;minimal workload&#8221; for 85% of the treatments; for one treatment there was a rating of &#8220;somewhat difficult.&#8221;  Conclusions:  Height and frequency of lift do not act separately and have an effect on the physiological load of the worker during manual lifting, reflected by changes in the heart rate.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ergonomía]]></kwd>
<kwd lng="es"><![CDATA[Frecuencia Cardíaca]]></kwd>
<kwd lng="es"><![CDATA[Carga de Trabajo]]></kwd>
<kwd lng="es"><![CDATA[Dolor Musculoesquelético]]></kwd>
<kwd lng="en"><![CDATA[ergonomics]]></kwd>
<kwd lng="en"><![CDATA[heart rate]]></kwd>
<kwd lng="en"><![CDATA[workload]]></kwd>
<kwd lng="en"><![CDATA[musculoskeletal pain]]></kwd>
</kwd-group>
</article-meta>
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