Construct validity of the Nutrition and Activity Knowledge Scale in a French sample of adolescents with mild to moderate intellectual disability |
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| Authors: | Christophe Maïano Jérôme Bégarie Alexandre JS Morin Jean-Marie Garbarino Grégory Ninot |
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| Institution: | 1. UMR 6233 “Institute of Movement Sciences, Etienne-Jules Marey”, CNRS-University of Aix-Marseille II, 163 Avenue de Luminy, CP 910, 13288 Marseille, France;2. University of Montpellier I, EA 4206 “Addictive, Performance and Health Behaviors”, Montpellier, France;3. University of Sherbrooke, Department of Psychology, Sherbrooke, Québec, Canada;4. University of Nice Sophia-Antipolis, Laboratory “Human motricity, Education, Health”, Nice, France;1. Physical Education Department, State University of New York College at Cortland, Cortland, NY, USA;2. Faculty of Health Sciences, University of Ontario Institute of Technology, Oshawa, ON, Canada;3. School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, British Columbia, Canada;1. Department of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece;2. Department of Physiotherapy, Faculty of Health and Human Sciences, Akmi Metropolitan College, Thessaloniki, Greece;3. Department of Physical Education and Sport Sciences at Serres, Aristotle University of Thessaloniki, Greece;1. Department of Exercise Neuroscience, Institute of Movement and Neurosciences, German Sport University, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany;2. Research Institute for Inclusion Through Physical Activity and Sport, Römerstraße 100, 50226 Frechen, Germany;1. Clermont Université, Université Blaise Pascal, EA 3533, Laboratoire des Adaptations Métaboliques à l’Exercice en Conditions Physiologiques et Pathologiques, Clermont-Ferrand, France;2. Université Limoges, Faculté des Sciences et Techniques, STAPS, Limoges, France;3. UNEFS Bucarest, Centre de Recherche Interdisciplinaire “Dr. Alexandru Partheniu”, Romania;4. University of Oradea, Research Centre on Human Performance, Oradea, Romania;5. Pediatric Hospital Oradea, Laborator de Genetica, Genetic Department, Oradea, Romania;1. Higher Vocational School in Tarnow, Institute of Health, Section of Physical Education, Zaklad Wychowania Fizycznego, Instytut Ochrony Zdrowia, Panstwowa Wyzsza Szkola Zawodowa, ul. A. Mickiewicza 8, 33-100 Tarnow, Poland;2. University School of Physical Education in Krakow, Department of Physiotherapy, Section of Kinesitherapy, Zak?ad Kinezyterapii, Katedra Fizjoterapii, Wydzial Rehabilitacji Ruchowej, Akademia Wychowania Fizycznego, al. Jana Paw?a II 78, 31-571 Krakow, Poland;1. Center for Nutrition in Schools, Department of Nutrition, University of California, Davis, Davis, CA;2. University of California Cooperative Extension Tulare County, Tulare, CA;3. University of California Cooperative Extension Contra Costa County, Pleasant Hill, CA;4. University of California Cooperative Extension Sacramento County, Sacramento, CA;5. University of California Agricultural and Natural Resources, Davis, CA;6. University of California Cooperative Extension San Diego County, San Diego, CA |
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| Abstract: | The purpose of this study was to test the reliability (i.e. internal consistency and test–retest reliability) and construct validity (i.e. content validity, factor validity, measurement invariance, and latent mean invariance) of the Nutrition and Activity Knowledge Scale (NAKS) in a sample of French adolescents with mild to moderate Intellectual Disability (ID). A total sample of 260 adolescents (144 boys and 116 girls), aged between 12 and 18 years old, with mild to moderate ID was involved in two studies. In the first study, analysis of items’ content reveals that many words from the original version were not understood or induced confusion. These items were reworded and simplified while retaining their original meaning. In the second study, results provided support for: (i) the factor validity and reliability of a 15-item French version of the NAKS; (ii) the measurement invariance of the resulting NAKS across genders and ID levels; (iii) the partial measurement invariance of the resulting NAKS across age groups and type of school placement. In addition, the latent means of the 15-item French version of the NAKS proved to be invariant across gender, age categories, and ID levels, but to vary across type of school placement (with adolescents schooled in self-contained classes from regular schools presenting higher levels of NAK than adolescents placed in specialized establishments). The present results thus provide preliminary evidence regarding the construct validity of a 15-item French version of the NAKS in a sample of adolescents with ID. |
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