<?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>0138-6557</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Militar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Med Mil]]></abbrev-journal-title>
<issn>0138-6557</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0138-65572021000400008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Relación entre actividad física y calidad de vida en adolescentes durante la pandemia por la COVID-19]]></article-title>
<article-title xml:lang="en"><![CDATA[Relationship between physical activity and quality of life in youth during the COVID-19 pandemic]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Fuenzalida]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza Morales]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Campos]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdivia Moreno]]></surname>
<given-names><![CDATA[José]]></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 contrib-type="author">
<name>
<surname><![CDATA[Guzmán-Muñoz]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magnani Branco]]></surname>
<given-names><![CDATA[Braulio Henrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés-Badilla]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Católica del Maule Facultad de Ciencias de la Educación Departamento de Ciencias de la Actividad Física]]></institution>
<addr-line><![CDATA[ Talca]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Santo Tomás, UST Faculty of Health Department of Sports Sciences and Physical Activity]]></institution>
<addr-line><![CDATA[ Santiago]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Santiago de Chile, USACH Faculty of Medical Sciences Department of Physical Activity, Sports and Health Sciences]]></institution>
<addr-line><![CDATA[ Santiago]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Santo Tomás Facultad de Salud Escuela de Kinesiología]]></institution>
<addr-line><![CDATA[ Talca]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidade Cesumar (UniCesumar) Graduate Program in Health Promotion ]]></institution>
<addr-line><![CDATA[ Maringá, PR]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Viña del Mar. Viña del Mar Escuela de Educación Carrera de Entrenador Deportivo]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>50</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0138-65572021000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0138-65572021000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0138-65572021000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La pandemia por la COVID-19 ha generado distanciamiento social, lo cual provoca disminución de la práctica de actividad física y menor calidad de vida relacionada con la salud.  Objetivo:  Relacionar el nivel de actividad física con la calidad de vida relacionada con la salud, en adolescentes, durante el confinamiento por la COVID-19.  Métodos: Estudio transversal que evaluó 184 estudiantes (61,4 % mujeres) con una edad media de 13,97 + 1,69 años, residentes en la región del Maule, Chile. Se emplearon dos encuestas de autoaplicación, la versión corta del Cuestionario Internacional de Actividad Física y la versión validada en población chilena, del KIDDO-KINDL.  Resultados: Se presentó correlación directa y significativa entre el tiempo total de actividad física leve con la autoestima (p= 0,043) y, entre el tiempo total sentado con el bienestar emocional (p= 0,025), autoestima (p= 0,014), escuela (p= 0,031) y puntaje total de calidad de vida (p= 0,006) para el total de la muestra. Solo las mujeres presentaron correlación (p&lt; 0,05) entre el tiempo total sentado con la familia, escuela y puntaje total de calidad de vida. Además, se encontraron diferencias significativas (p&lt; 0,05) en el tiempo total de actividad física moderada, escuela y puntaje total de calidad de vida a favor de los hombres.  Conclusión:  Existe relación entre el tiempo total de actividad física con la autoestima y, entre el tiempo total sentado con el bienestar emocional, autoestima, escuela y puntaje total de calidad de vida en adolescentes durante el confinamiento por la COVID-19.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: The COVID-19 pandemic has generated social distancing, causing a decrease in the practice of physical activity and a lower health-related quality of life.  Objective:  To relate the level of physical activity with health-related quality of life in youth, during COVID-19 lockdown.  Methods: Cross-sectional study that evaluated 184 students (61,4 % female) with a mean age of 13,97 + 1,69 years, residing in the Maule region, Chile. Two self-application surveys were applied, with the short version of the International Physical Activity Questionnaire and the valid version in the Chilean population of the KIDDO-KINDL.  Results: There was a direct and significant correlation between the total time of mild physical activity with self-esteem (p= 0,043) and, between the total sitting time with emotional well-being (p= 0,025), self-esteem (p= 0,014), school (p= 0,031), and total quality of life score (p= 0,006) for the total sample. Only females showed a correlation (p&lt; 0,05) between total time sitting with family, school, and total quality of life score. In addition, significant differences (p&lt; 0,05) were found in the total time of moderate physical activity, school, and total quality of life score in favor of males.  Conclusion: There is a relationship between the total time of physical activity with self-esteem and between the total sitting time with emotional well-being, self-esteem, school, and total quality of life score in youth during COVID-19 lockdown.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ejercicio físico]]></kwd>
<kwd lng="es"><![CDATA[condición física]]></kwd>
<kwd lng="es"><![CDATA[salud mental]]></kwd>
<kwd lng="es"><![CDATA[estilos de vida]]></kwd>
<kwd lng="es"><![CDATA[estudiantes]]></kwd>
<kwd lng="en"><![CDATA[exercise]]></kwd>
<kwd lng="en"><![CDATA[physical fitness]]></kwd>
<kwd lng="en"><![CDATA[mental health]]></kwd>
<kwd lng="en"><![CDATA[lifestyle]]></kwd>
<kwd lng="en"><![CDATA[students]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bravo-Cucci]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kosakowski]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Núñez-Cortés]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Huamash]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Ascarruz-Ascencios]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La actividad física en el contexto de aislamiento social por COVID-19]]></article-title>
<source><![CDATA[GICOS]]></source>
<year>2020</year>
<volume>5</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>6-22</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kalazich]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Valderrama]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Flández]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Burboa]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Humeres]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Urbina]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Orientaciones Deporte y COVID-19 Recomendaciones sobre el retorno a la actividad física y deportes de niños niñas y adolescentes]]></article-title>
<source><![CDATA[Rev Chil Pediat]]></source>
<year>2020</year>
<volume>91</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>75-90</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brazo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Gába]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Young]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Uddin]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Aubert]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Manyanga]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La pandemia ha aumentado la inactividad física en los jóvenes: esta red global quiere solucionarlo]]></article-title>
<source><![CDATA[The Conversation]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arias Molina]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Herrero Solano]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Cabrera Hernández]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Guyat]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Mederos]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manifestaciones psicológicas frente a la situación epidemiológica causada por la COVID-19]]></article-title>
<source><![CDATA[Rev Haban Cienc Méd]]></source>
<year>2020</year>
<volume>19</volume>
<numero>^sSupl.</numero>
<issue>^sSupl.</issue>
<supplement>Supl.</supplement>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bazán]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Actividad física en personas con diabetes]]></article-title>
<source><![CDATA[ISDe Sports Magazine]]></source>
<year>2014</year>
<volume>6</volume>
<numero>21</numero>
<issue>21</issue>
<page-range>1-7</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zurita-Ortega]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Castro-Sánchez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez Fernández]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Cofré-Boladós]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Chacón-Cuberos]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Martínez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Actividad física, obesidad y autoestima en escolares chilenos Análisis mediante ecuaciones estructurales]]></article-title>
<source><![CDATA[Rev Med Chile]]></source>
<year>2017</year>
<volume>145</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>299-308</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guzmán-Muñoz]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Concha-Cisternas]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Oñate-Barahona]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Lira-Cea]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Cigarroa-Cuevas]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez-Rebolledo]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Factors associated with low quality of life in Chilean adults during the COVID-19 quarantine]]></article-title>
<source><![CDATA[Rev Med Chile]]></source>
<year>2020</year>
<volume>148</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1759-66</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="">
<collab>Centros para el Control y la Prevención de Enfermedades</collab>
<source><![CDATA[El bienestar de los adolescentes durante el COVID-19. Recursos parentales]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guzmán-Muñoz]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Concha-Cisternas]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Lira-Cea]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Vásquez]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo-Retamal]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impacto de un contexto de pandemia sobre la calidad de vida de adultos jóvenes]]></article-title>
<source><![CDATA[Rev Cubana Med Milit]]></source>
<year>2021</year>
<volume>50</volume>
<numero>2</numero>
<issue>2</issue>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Velasquez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Declaración del Helsinki de la Asociación Médica Mundial-Principios éticos para las investigaciones médicas en seres humanos]]></article-title>
<source><![CDATA[J Oral Res]]></source>
<year>2013</year>
<volume>1</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>42-4</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carrera]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cuestionario Internacional de Actividad Física]]></article-title>
<source><![CDATA[Rev Enferm Trab]]></source>
<year>2017</year>
<volume>7</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>49-54</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ravens-Sieberer]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Bullinger]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessing healthrelated quality of life in chronically ill children with the German KINDL First psychometric and content analytical results]]></article-title>
<source><![CDATA[Qual Life Res]]></source>
<year>1998</year>
<volume>7</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>399-407</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[Urzúa]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Mercado]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La Evaluación de la Calidad de Vida de los y las Adolescentes a través del Kiddo - Kindl]]></article-title>
<source><![CDATA[Ter Psicol]]></source>
<year>2008</year>
<volume>26</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>133-41</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[Cohen]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A power primer]]></article-title>
<source><![CDATA[Psychol Bull]]></source>
<year>1992</year>
<volume>112</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>155-9</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[Giakoni]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Paredes]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Duclos-Bastías]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Educación Física en Chile: tiempo de dedicación y su influencia en la condición física, composición corporal y nivel de actividad física en escolares]]></article-title>
<source><![CDATA[Retos]]></source>
<year>2021</year>
<volume>39</volume>
<numero>2021</numero>
<issue>2021</issue>
<page-range>24-9</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[Ruíz-Roso]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Changes of physical activity and ultra-processed food consumption in adolescents from different countries during Covid-19 pandemic An observational study]]></article-title>
<collab>de Carvalho Padilha P.Matilla-Escalante D.Brun P.Ulloa N.Acevedo-Correa D</collab>
<source><![CDATA[Nutrients]]></source>
<year>2020</year>
<volume>12</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>2289</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[Aparicio-Baquen]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Aparicio-Gómez]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Calidad de vida en niños, adolescentes y jóvenes durante el confinamiento obligatorio familiar en Bogotá por COVID-19]]></article-title>
<source><![CDATA[RIPIE]]></source>
<year>2020</year>
<volume>1</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>11-28</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[Lizarazo]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Valdivieso]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Angél Burbano]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Correlación entre actividad física y autoestima de escolares adolescentes un análisis de tipo trasversal]]></article-title>
<source><![CDATA[Revista Virtual Universidad Católica del Norte]]></source>
<year>2020</year>
<numero>60</numero>
<issue>60</issue>
<page-range>95-115</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[Slimani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Paravlic]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Mbarek]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Bragazzi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Relationship Between Physical Activity and Quality of Life During the Confinement Induced by COVID-19 Outbreak A Pilot Study in Tunisia]]></article-title>
<collab>&amp;TD</collab>
<source><![CDATA[Front Psychol]]></source>
<year>2020</year>
<volume>11</volume>
<page-range>1182</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[Mastrantonio]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Corduras]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Actividad física y calidad de vida percibida en usuarios de centros deportivos públicos en Terrassa]]></article-title>
<source><![CDATA[Retos]]></source>
<year>2020</year>
<numero>37</numero>
<issue>37</issue>
<page-range>427-43</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[Zheng]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Sheridan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Sit]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[COVID-19 pandemic brings a sedentary lifestyle a cross-sectional and longitudinal study]]></article-title>
<source><![CDATA[Int J Environ Res Public Health]]></source>
<year>2020</year>
<volume>17</volume>
<numero>17</numero>
<issue>17</issue>
<page-range>6035</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[López]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ambiente de aprendizaje para la enseñanza de las matemáticas ante el COVID-19]]></article-title>
<source><![CDATA[Ciencia e Interculturalidad]]></source>
<year>2021</year>
<volume>28</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>9-22</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez-Zafra]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez-Granizo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Baez-Mirón]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Moreno-Arrebola]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Revelles]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis de la relación existente entre el uso de videojuegos y la práctica de actividad física]]></article-title>
<source><![CDATA[Sportis]]></source>
<year>2019</year>
<volume>5</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>118-32</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yuing]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Soto-Espíndola]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Valdés-Valdés]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez-Rebolledo]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Guzmán-Muñoz]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Autopercepción de la condición física, funcionalidad y calidad de vida en estudiantes universitarios]]></article-title>
<source><![CDATA[Rev Cubana Med Milit]]></source>
<year>2021</year>
<volume>50</volume>
<numero>2</numero>
<issue>2</issue>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
