<?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>0465-546X</journal-id>
<journal-title><![CDATA[Medicina y Seguridad del Trabajo]]></journal-title>
<abbrev-journal-title><![CDATA[Med. segur. trab.]]></abbrev-journal-title>
<issn>0465-546X</issn>
<publisher>
<publisher-name><![CDATA[Escuela Nacional de Medicina del Trabajo. Instituto de Salud Carlos III]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0465-546X2017000400291</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Capacidad de manejo de carga con una mano en trabajadores y normativa chilena aplicable a la evaluación de riesgos de trastornos músculo-esqueléticos]]></article-title>
<article-title xml:lang="en"><![CDATA[One-hand Load Handling Capacity and Chilean Regulations Applicable to Musculoskeletal Disorder Risk Assessment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Henríquez]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Maldonado]]></surname>
<given-names><![CDATA[Marta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Concepción Facultad de Ciencias Biológicas Unidad de Ergonomía]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Mutual de Seguridad Cámara Chilena de la Construcción Gerencia de Gestión del Conocimiento Departamento de Investigación Aplicada]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>63</volume>
<numero>249</numero>
<fpage>291</fpage>
<lpage>299</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0465-546X2017000400291&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0465-546X2017000400291&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0465-546X2017000400291&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los trastornos músculo-esqueléticos (TMEs) se encuentran entre los principales problemas de salud laboral en Chile, así como también a nivel internacional. En este sentido, los antecedentes epidemiológicos indican que uno de los potenciales agentes causales de TMEs corresponde al manejo manual de carga. Al respecto, la normativa chilena carece de métodos para evaluar riesgos de trastornos músculo-esqueléticos asociados a la manipulación de carga con una mano.  Objetivo: Determinar la capacidad de elevación y descenso de carga con una mano en trabajadores de género masculino.  Material y método: El estudio se efectuó en un centro hospitalario público y una industria metalúrgica de la Provincia de Concepción. Los trabajadores que participaron en el estudio efectuaban labores asociadas al manejo de manual de carga y/o pacientes. Para la determinación de peso máximo aceptable (PMA) se aplicaron pruebas psicofísicas. Se estudiaron las tareas de elevaciones y descensos entre suelo y codo, así como entre codo y alcance vertical de brazo. Se evaluaron diferentes frecuencias de manipulación de carga, siendo éstas una elevación o descenso cada 10 segundos, 1 minuto, 30 minutos, 1 hora y 8 horas.  Resultados: Para las tareas analizadas, se determinaron valores de PMA que protegen al 10%, 25%, 50%, 75% y 90% del grupo estudiado.  Discusión: Al comparar los resultados obtenidos en el presente estudio con referencias bibliográficas de capacidad de manipulación de carga con dos manos, se verificó que el PMA determinado para una mano es menor entre un 55% a 69% que el registrado para dos manos. Se plantea la necesidad de efectuar estudios complementarios que permitan validar los resultados obtenidos, para avanzar en el desarrollo de métodos, criterios y normativa aplicable a tareas de elevación y descenso de carga con una mano.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background: musculoskeletal disorders (MSDs) are among the major occupational health problems not only in Chile but at the international level. In this sense, epidemiological studies indicate that one of the potential risk factor of MSDs corresponds to manual material handling. In this regard, the Chilean legislation does not consider methods for risk assessment of MSDs associated with manual material handling with one hand.  Aim: to determine the lifting and lowering load capacity by one hand in male workers.  Material and Methods: The study was carried out in a public hospital and in a metallurgical industry from the Province of Concepción. The workers that participated in the study carried out activities associated with both manual material handling and/or patient handling. To determine the maximum acceptable weight (MAW), psychophysical tests were applied. The values of MAW were established when the group handled loads with distances between floor and elbow and between elbow and vertical arm reach heights. Different frequencies were studied, each one handling load every 10 seconds, 1 minute, 30 minutes, 1 hour and 8 hours.  Results: For the analyzed tasks, values of MAW protecting the 10%, 25%, 50%, 75% and 90% of the group studied were determined.  Discussion: The results obtained were compared in this study using bibliographic references of handling load capacity with both hands. The values of MAW for one hand found in this study are between 55% up to 69% lower than those values registered for two hands, according with the literature reviewed. To validate the results obtained it is necessary to carry out complementary studies, in order to continue advancing in the development of methods, criteria and regulations applicable to lifting or lowering load with one hand.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Evaluación de capacidad de trabajo]]></kwd>
<kwd lng="es"><![CDATA[Trastornos músculo-esqueléticos]]></kwd>
<kwd lng="es"><![CDATA[Evaluación de riesgos]]></kwd>
<kwd lng="en"><![CDATA[Work Capacity Evaluation]]></kwd>
<kwd lng="en"><![CDATA[Musculoskeletal Diseases]]></kwd>
<kwd lng="en"><![CDATA[Risk Assessment]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="">
<collab>Dirección del Trabajo</collab>
<source><![CDATA[ENCLA 2011. Informe de Resultados. Séptima Encuesta Laboral]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Santiago de Chile ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<collab>European Foundation for the Improvement of Living and Working Conditions</collab>
<source><![CDATA[Fifth European Working Conditions Survey]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Villar]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<source><![CDATA[Riesgos de trastornos musculoesqueléticos en la población laboral española]]></source>
<year>2015</year>
<publisher-name><![CDATA[Instituto Nacional de Seguridad e Higiene en el Trabajo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<source><![CDATA[Musculoskeletal Disorders and Workplace Factors: A Critical Review of Epidemiologic Evidence for Work-Related Musculoskeletal Disorders of the Neck, Upper Extremity, and Low Back]]></source>
<year>1997</year>
<publisher-loc><![CDATA[Cincinnati, OH ]]></publisher-loc>
<publisher-name><![CDATA[U.S. Department of Health and Human]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<collab>Ministerio de Trabajo y Previsión Social</collab>
<article-title xml:lang=""><![CDATA[Ley 20.001. Regula el peso máximo de carga humana]]></article-title>
<source><![CDATA[Diario Oficial]]></source>
<year>2005</year>
<numero>38079</numero>
<issue>38079</issue>
<page-range>2</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="">
<collab>Ministerio del Trabajo y Previsión Social</collab>
<source><![CDATA[Guía Técnica para la evaluación y control de los riesgos asociados al manejo o manipulación manual de carga]]></source>
<year>2008</year>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Monnington]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Quarrie]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Pinder]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Morris]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of Manual Handling Assessment Charts (MAC) for health and safety inspectors]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[McCabe]]></surname>
</name>
</person-group>
<source><![CDATA[Contemporary Ergonomics]]></source>
<year>2003</year>
<page-range>2-7</page-range><publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Taylor &amp; Francis]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Waters]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Putz-Anderson]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Garg]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Fine]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Revised NIOSH equation for the design and evaluation of manual lifting tasks]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>1993</year>
<volume>36</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>749-76</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="book">
<collab>Liberty Mutual</collab>
<source><![CDATA[Manual material handling guidelines]]></source>
<year>2005</year>
<publisher-name><![CDATA[Libery Mutual Grup]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McConville]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Hertzberg]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A study of one-handed lifting: Final report]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>1968</year>
<volume>11</volume>
<page-range>297</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davis]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Stubbs]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<source><![CDATA[Force limits in manual work]]></source>
<year>1980</year>
<publisher-loc><![CDATA[Guildford, U.K. ]]></publisher-loc>
<publisher-name><![CDATA[IPC Science and Technology Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Garg]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Saxena]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Maximum frequency acceptable to female workers for one-handed lifts in the horizontal plane]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>1982</year>
<volume>25</volume>
<page-range>839-52</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mital]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Asfour]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Maximum frequency acceptable to males for one-handed horizontal lifting in the sagittal plane]]></article-title>
<source><![CDATA[Human Factors]]></source>
<year>1983</year>
<volume>25</volume>
<page-range>563-71</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mital]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ilango]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Subjective estimates of one-handed carrying tasks]]></article-title>
<source><![CDATA[Applied Ergonomics]]></source>
<year>1983</year>
<volume>14</volume>
<page-range>265-9</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Psychophysical considerations in permissible loads]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>1985</year>
<volume>28</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>327-30</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ciriello]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Blick]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Wilkinson]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effects of task duration on psychophysically-determined maximum acceptable weights and forces]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>1990</year>
<volume>33</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>187-200</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Stobbe]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Hobbs]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of asymmetry on psychophysical lifting capacity for three lifting types]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>2005</year>
<volume>48</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>364-79</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Irvine]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Maximum frequency of lift acceptable to male industrial workers]]></article-title>
<source><![CDATA[Am Ind Hyg Assoc J]]></source>
<year>1968</year>
<volume>29</volume>
<page-range>531-6</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Irvine]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Bass]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Maximum weights and workloads acceptable to male industrial workers]]></article-title>
<source><![CDATA[Am Ind Hyg Assoc J]]></source>
<year>1970</year>
<volume>31</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>579-86</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of age and physique on continuous work capacity]]></article-title>
<source><![CDATA[Hum Factors]]></source>
<year>1971</year>
<volume>13</volume>
<page-range>467-79</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ciriello]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Maximum weights and work load acceptable to female workers]]></article-title>
<source><![CDATA[Journal of Occupational Medicine]]></source>
<year>1974</year>
<volume>16</volume>
<page-range>527-34</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Snook]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The design of manual handling tasks]]></article-title>
<source><![CDATA[Ergonomics]]></source>
<year>1978</year>
<volume>21</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>963-85</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ayoub]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Mital]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<source><![CDATA[Manual materials handling]]></source>
<year>1989</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Taylor &amp; Francis]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davis]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Sheppard]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pattern of accident distribution in the telecommunications industry]]></article-title>
<source><![CDATA[British Journal of Industrial Medicine]]></source>
<year>1980</year>
<volume>37</volume>
<page-range>175-9</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stubbs]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Trunk stresses in construction and other workers]]></article-title>
<source><![CDATA[Spine]]></source>
<year>1981</year>
<volume>6</volume>
<page-range>83-9</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
