<?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>2007-4832</journal-id>
<journal-title><![CDATA[Acta de investigación psicológica]]></journal-title>
<abbrev-journal-title><![CDATA[Acta de investigación psicol]]></abbrev-journal-title>
<issn>2007-4832</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Psicología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-48322022000200091</article-id>
<article-id pub-id-type="doi">10.22201/fpsi.20074719e.2022.2.456</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de Dos Protocolos de Intervención para el Incremento de Ejercicio Físico: Estudio Longitudinal]]></article-title>
<article-title xml:lang="en"><![CDATA[The Effect of Two Intervention Protocols to Increase Physical Exercise: Longitudinal Study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wrzecionkowska]]></surname>
<given-names><![CDATA[Dagmara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calleja]]></surname>
<given-names><![CDATA[Nazira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robles Cabrera]]></surname>
<given-names><![CDATA[Adriana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Loving]]></surname>
<given-names><![CDATA[Rolando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Centro de Ciencias de la Complejidad ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Políticas y Sociales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Psicología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>12</volume>
<numero>2</numero>
<fpage>91</fpage>
<lpage>105</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-48322022000200091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-48322022000200091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-48322022000200091&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este estudio fue conocer el impacto de la estrategia de autorregulación de Contraste Mental e Intenciones de Implementación (MCII) como complemento de una intervención con base en el Enfoque del Proceso de Acción en Salud (HAPA) para realizar ejercicio. Fueron reclutados 76 participantes con sobrepeso (índice de masa corporal [IMC]&#8805;25) que querían perder peso (Medad =40 años; MIMC=29). Los participantes fueron asignados al azar a dos condiciones: HAPA (n=36) y HAPA+MCII (n=40). Las variables de interés (horas de ejercicio auto reportadas, medidas corporales y salud psicológica con DASS-21 e IWQOL-Lite) se midieron al inicio, en la semana 6 y en la 12. Encontramos un aumento significativo en las horas de ejercicio y disminución significativa del IMC y IWQOL-Lite Estado Físico y Autoestima al comparar las ocasiones de medición para la muestra total. Se observaron mayores efectos del protocolo HAPA+MCII que del HAPA en las variables de estudio, con excepción de las variables Ansiedad del DASS-21 y Vida sexual del IWQOL-Lite. Sin embargo, en ningún caso las diferencias resultaron estadísticamente significativas. El estudio indica el papel fundamental que desempeñan la autoeficacia y su operacionalización en el logro de una intervención exitosa. Al combinar dos protocolos, se recomienda considerar el efecto de techo que se puede obtener con un solo protocolo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstrac The objective of this study was to understand the impact of the Mental Contrasting and Implementation Intentions (MCII) self-regulation technique as a complement to an intervention based on the Health Action Process Approach (HAPA) to perform exercise. Seventy-six participants with body mass index (BMI) &#8805;25 who wanted to lose weight (Mage =40 years; MBMI =29) were recruited. Participants were randomized into two conditions: HAPA (n=36) and HAPA + MCII (n=40). The variables of interest (self-reported hours of exercise, body measurements and psychological health with DASS-21 and IWQOL-Lite) were measured at the beginning, in week 6 and in 12. We found a significant increase in the hours of exercise and significant decrease in BMI and IWQOL-Lite Physical Functioning and Self-esteem when comparing the occasions of measurement for the total sample. Greater effects of the HAPA + MCII protocol were observed than of the HAPA for the study variables, with the exception of the DASS-21 Anxiety and the IWQOL-Lite Sexual life. However, the differences were not statistically significant. The study indicates the important role of self-efficacy and its operationalization for a successful intervention. When combining two protocols, the ceiling effect that can be obtained with a single protocol should be considered.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Enfoque del Proceso de Acción en Salud (HAPA)]]></kwd>
<kwd lng="es"><![CDATA[Contraste Mental e Intenciones de Implementación (MCII)]]></kwd>
<kwd lng="es"><![CDATA[Ejercicio físico]]></kwd>
<kwd lng="es"><![CDATA[Obesidad]]></kwd>
<kwd lng="en"><![CDATA[Health Action Process Approach (HAPA)]]></kwd>
<kwd lng="en"><![CDATA[Mental Contrasting and Implementation Intentions (MCII)]]></kwd>
<kwd lng="en"><![CDATA[Physical exercise]]></kwd>
<kwd lng="en"><![CDATA[Obesity]]></kwd>
</kwd-group>
</article-meta>
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