<?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>1665-1456</journal-id>
<journal-title><![CDATA[Biotecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Biotecnia]]></abbrev-journal-title>
<issn>1665-1456</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Sonora, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-14562024000100136</article-id>
<article-id pub-id-type="doi">10.18633/biotecnia.v26.2134</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Weight gain prevention during the December holiday season in adults: Pilot Randomized Controlled Trial]]></article-title>
<article-title xml:lang="es"><![CDATA[Prevención del aumento de peso durante las fiestas decembrinas en adultos: Ensayo Controlado Aleatorio Piloto]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero-Magaña]]></surname>
<given-names><![CDATA[Emmanuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Haby]]></surname>
<given-names><![CDATA[Michelle M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Contreras]]></surname>
<given-names><![CDATA[Teresita de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Candia-Plata]]></surname>
<given-names><![CDATA[Maria del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mata-Pineda]]></surname>
<given-names><![CDATA[Ana Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esparza-Romero]]></surname>
<given-names><![CDATA[Julián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia]]></surname>
<given-names><![CDATA[Mauro E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villegas-Valle]]></surname>
<given-names><![CDATA[Rosa C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Zavala]]></surname>
<given-names><![CDATA[Rolando Giovanni]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Sonora Facultad Interdisciplinaria de Ciencias Biológicas y de Salud ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Sonora Facultad Interdisciplinaria de Ciencias Biológicas y de Salud ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Sonora Facultad Interdisciplinaria de Ciencias Biológicas y de Salud ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo Unidad de Investigación en Obesidad y Diabetes ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo  ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>26</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-14562024000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-14562024000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-14562024000100136&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The December holiday season is a critical period for weight gain in adults, accounting for 50 % of annual weight gain. Actually, there are few preventive interventions during this period. This work evaluated the effect of two online interventions for the prevention of weight gain in Mexican adults during the December holiday season in the COVID-19 pandemic. A three-arm pilot randomized controlled trial was implemented. The primary outcome was change in body weight at 8 weeks (at the end of the holiday season). At the end of the study, 78.1 % of the participants were retained. No differences between groups were found in body weight change (Watch your Weight During the Holidays (WWDH): -0.10 ± 1.81 (SD), 95 % CI [-1.40, 1.19]; Relative Fasting 5:2 (RF5:2): 0.92 ± 1.18, 95 % CI [0.12, 1.71] and control group: 0.15 ± 1.68, 95 % CI [-0.98, 1.28]). The results show that the trial was feasible, that a behavioral intervention using selfweighing and nutrition counseling (WWDH group) had potentially beneficial results, while the RF5:2 intervention was not promising during this period. In addition, this pilot allowed the design of a definitive study.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las fiestas decembrinas son un periodo crítico para la ganancia de peso en adultos, donde se gana más del 50 % del incremento de peso anual. Actualmente, existen pocas intervenciones preventivas durante este periodo. Este trabajo evaluó el efecto de dos intervenciones en línea para la prevención del aumento de peso en adultos mexicanos durante las fiestas decembrinas en la pandemia por COVID-19. Se implementó un ensayo controlado aleatorio piloto de tres brazos. La variable principal fue el cambio en el peso corporal a las 8 semanas (al finalizar las fiestas decembrinas). Al final del estudio, se retuvo al 78.1 % de los participantes. No se encontraron diferencias en el cambio del peso corporal entre los grupos (Cuida tu Peso Durante las Fiestas Decembrinas (CPDFD): -0.10 ± 1.81 (DE), IC95 % de [-1.40 a 1.19]; Ayuno Relativo 5:2 (AR5:2): 0.92 ± 1.18, IC95 % [0.12 a 1.71] y grupo control: 0.15 ± 1.68, IC95 % [-0.98 a 1.28]). Los resultados muestran que el ensayo fue factible, que la intervención con auto pesaje y consejería nutricional (grupo CPDFD) aplicada tuvo resultados potencialmente beneficiosos, mientras que la intervención RF5:2 no fue prometedora durante este período. Asimismo, el trabajo permitió el diseño de un estudio definitivo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Primary Prevention]]></kwd>
<kwd lng="en"><![CDATA[Holidays]]></kwd>
<kwd lng="en"><![CDATA[Weight Gain]]></kwd>
<kwd lng="en"><![CDATA[Adults]]></kwd>
<kwd lng="en"><![CDATA[Overweight]]></kwd>
<kwd lng="es"><![CDATA[Prevención Primaria]]></kwd>
<kwd lng="es"><![CDATA[Vacaciones y Feriados]]></kwd>
<kwd lng="es"><![CDATA[Aumento de Peso]]></kwd>
<kwd lng="es"><![CDATA[Adultos]]></kwd>
<kwd lng="es"><![CDATA[Sobrepeso]]></kwd>
</kwd-group>
</article-meta>
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