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RESEARCH PRODUCT

Translating, Reliability Testing, and Validating a Norwegian Questionnaire to Assess Adolescents’ Intentions to be Physically Active After High School Graduation

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This is a scholarly, peer-reviewed article originally published in Sage Open under the terms of the Creative Commons Attribution 3.0 License (CC BY 3.0). You can access the article by following this link: http://dx.doi.org/10.1177/2158244015580374 Dette er en vitenskapelig, fagfellevurdert artikkel som opprinnelig ble publisert i Sage Open under betingelsene til lisensen Creative Commons Attribution 3.0 (CC BY 3.0). Du får tilgang til artikkelen via Sage Open ved å følge denne lenken: http://dx.doi.org/10.1177/2158244015580374 This study aimed to test the reliability and validity of a Norwegian measure of adolescents’ intentions to be physically active after graduation (the Intention to be Physically Active After Graduation [IPAG] Questionnaire). The development of IPAG involved a translation and back-translation procedure and a test–retest study, performed on 105 adolescents (M age = 17.1, SD = 0.6) from three different high schools in Kristiansand, Norway. The four IPAG items loaded on one single factor, demonstrating acceptable factor loadings (.68-.90) and acceptable Cronbach’s alpha values (.84 and .84) in both the test and retest assessment. IPAG correlated positively with a measure of attitudes toward physical activity (.61-.71) and a measure of participants’ intentions to be physically active next month (.77-.82), supporting both construct validity and criterion-related validity of the IPAG-Questionnaire. Acceptable reliability and validity of IPAG was found, which supports the use of this instrument in future research.