Author:

• Valter Cordeiro Barbosa Filho - Barbosa Filho, V. C. - Curitiba, PR - <valtercbf@gmail.com>
ORCID: https://orcid.org/0000-0002-4769-4068

Co-author(s):

• Alexsandra Silva Bandeira - Bandeira, A.S - <alebandeiraufc@gmail.com>
ORCID: https://orcid.org/0000-0001-8922-1042
• Cassiano Ricardo Rech - Rech, C.R. - <crrech@hotmail.com>
ORCID: https://orcid.org/0000-0002-9647-3448
• Adair Silva Lopes - Lopes, A.S - <adair.lopes@ufsc.br>
ORCID: https://orcid.org/0000-0003-2278-9076
• Jorge Mota - Mota, J. - <jmota@fade.up.pt>
ORCID: https://orcid.org/0000-0001-7571-9181
• Kelly Samara Silva - Silva, K.S - <ksilvajp@gmail.com; ksilvajp@yahoo.com.br>
ORCID: https://orcid.org/0000-0002-7356-1680

Abstract:

This study analyzed the validity and reliability of an instrument with scales measuring factors associated with screen time in adolescents. Two cross-sectional studies included students for analyses of validity and internal consistency (n=1138, 51.5% boys) and test-retest reproducibility (n=194, 56.2% boys). Individual (attitude, self-efficacy and expectations), social (behaviors, rules, beliefs and family support and support of school members) and physical environmental (home and bedroom equipment) factors of screen time were evaluated. All the scales of the instrument met the statistical criteria of the validity of the exploratory factorial analysis (p

Keywords:

sedentary lifestyles, associated factors, questionnaire, validity tests, reproducibility of results

Content:

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