<?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>1659-2913</journal-id>
<journal-title><![CDATA[Revista Costarricense de Psicología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Costarric. Psic]]></abbrev-journal-title>
<issn>1659-2913</issn>
<publisher>
<publisher-name><![CDATA[Colegio Profesional de Psicólogos de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-29132023000200277</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[¿Existen realmente las etapas de cambio para actividad física? Hallazgos desde un estudio con una muestra estudiantil universitaria que combina el Modelo Procesual de Acción en Salud con el Modelo Transteórico]]></article-title>
<article-title xml:lang="en"><![CDATA[Are there really stages of change in physical activity? Findings from a study with a sample of university students that combines the health action process model with the transtheoretical model]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes Fernández]]></surname>
<given-names><![CDATA[Benjamín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz Rojas]]></surname>
<given-names><![CDATA[Derby]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>42</volume>
<numero>2</numero>
<fpage>277</fpage>
<lpage>299</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-29132023000200277&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-29132023000200277&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-29132023000200277&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El proceso de cambio hacia la práctica de actividad física todavía no ha sido adecuadamente caracterizado. Uno de los asuntos en discusión es si este proceso puede ser descrito en términos de etapas. Se llevó a cabo un estudio con el objetivo de examinar patrones de continuidad o discontinuidad de variables del Modelo Procesual de Acción en Salud dentro de las etapas propuestas por el Modelo Transteórico, y así valorar en qué medida la evidencia apoya la existencia de etapas. Para ello, se recogieron datos transversales de estudiantes universitarios (N = 490, edad = 22.5 años, DT = 6.57) y se hicieron ANOVA, contrastes planeados y análisis de tendencias polinómicas, siguiendo las recomendaciones de Sutton (2000). Los resultados para varias de las variables fueron compatibles con supuestos sobre la existencia de etapas. Sin embargo, para otras variables, los resultados no apoyan la existencia de etapas. Estos hallazgos proveen información útil para esfuerzos de integración de distintos modelos. Se discute sobre las implicaciones teóricas y prácticas de estos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The process of change towards the practice of physical activity has not yet been adequately characterized. One issue under discussion is whether this process can be described in terms of stages. A study was carried out in order to examine patterns of continuity or discontinuity in variables of the Health Action Process Model within the stages proposed by the Transtheoretical Model, and thus assess to what extent the evidence supports the existence of stages. For this, cross-sectional data of university students (N = 490, mean age 22.5 years (SD = 6.57) were collected, and ANOVAs, planned contrasts, and polynomial trend analyses were performed, as recommended by Sutton (2000). The results for several variables were compatible with assumptions about the existence of stages. However, for other variables results did not support the existence of stages. These findings provide useful information for efforts to integrate different models. The theoretical and practical implications are discussed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[etapas de cambio]]></kwd>
<kwd lng="es"><![CDATA[Modelo Transteórico]]></kwd>
<kwd lng="es"><![CDATA[actividad física]]></kwd>
<kwd lng="es"><![CDATA[conductas de salud]]></kwd>
<kwd lng="es"><![CDATA[estudiantes universitarios.]]></kwd>
<kwd lng="en"><![CDATA[Stages of Change]]></kwd>
<kwd lng="en"><![CDATA[Transtheoretical Model]]></kwd>
<kwd lng="en"><![CDATA[Physical Activity]]></kwd>
<kwd lng="en"><![CDATA[Health Behaviors.]]></kwd>
</kwd-group>
</article-meta>
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