<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-17T06:57:58Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:20.500.12328/4560" metadataPrefix="marc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:20.500.12328/4560</identifier><datestamp>2025-05-16T12:55:50Z</datestamp><setSpec>com_2072_67741</setSpec><setSpec>col_2072_484352</setSpec></header><metadata><record xmlns="http://www.loc.gov/MARC21/slim" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd">
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      <subfield code="a">Amor-Barbosa, Marta</subfield>
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      <subfield code="a">Girabent-Farrés, Montserrat</subfield>
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      <subfield code="a">Rosés-Noguer, Ferran</subfield>
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      <subfield code="a">Ortega-Martínez, Anna</subfield>
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      <subfield code="a">Medina-Rincón, Almudena</subfield>
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      <subfield code="a">Bagur-Calafat, Caritat</subfield>
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      <subfield code="c">2021</subfield>
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      <subfield code="a">Childhood is a critical period in the development and consolidation of healthy habits, such as the practice of physical activity (PA). It is essential to have valid instruments to measure PA from an early age. The aim of this study was to design and evaluate the content validity of the Physical Activity Questionnaire-Young Children (PAQ-YC) to measure the PA level in children aged 5–7 years. The first version of the questionnaire was tested by a 2-round Delphi study. It was established as a consensus criterion that the relative interquartile range (RIR) and/or the coefficient of variation (CV) were ≤20%. The most significant discrepancies in the Delphi survey (n = 11–13) were observed for items about hours of Physical Education or similar activities at school (item 7: RIR = 20, CV = 38.73) and for items about participation in Physical Education (item 8: RIR = 25, CV = 15.45). The cognitive interviews (n = 5) confirmed the version agreed by the experts. The results show that the PAQ-YC presents adequate content validity in terms of relevance, comprehensiveness and comprehensibility.</subfield>
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      <subfield code="a">Amor-Barbosa, Marta; Girabent-Farrés, Montserrat; Rosés-Noguer, Ferran [et al.]. Development and content validity of the physical activity questionnaire-young children (PAQ-YC) to assess physical activity in children between 5 and 7 years. Healthcare, 2021, 9(6), 655. Disponible en: &lt;https://www.mdpi.com/2227-9032/9/6/655>. Fecha de acceso: 20 ene. 2025. DOI: 10.3390/healthcare9060655</subfield>
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      <subfield code="a">https://dx.doi.org/10.3390/healthcare9060655</subfield>
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      <subfield code="a">Activitat física</subfield>
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      <subfield code="a">Qüestionari</subfield>
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      <subfield code="a">Validesa del contingut</subfield>
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      <subfield code="a">Pediatria</subfield>
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      <subfield code="a">Actividad física</subfield>
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      <subfield code="a">Pediatría</subfield>
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      <subfield code="a">Physical activity</subfield>
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      <subfield code="a">Development and content validity of the physical activity questionnaire-young children (PAQ-YC) to assess physical activity in children between 5 and 7 years</subfield>
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