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Reliability and validity of a screen time-based sedentary behaviour questionnaire for adolescents: the HELENA study

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Abstract
BACKGROUND: Although there is a growing interest in the epidemiology of sedentary behaviours, it is unknown whether sedentary behaviour questionnaires are broad markers of sedentary time. The aims of this study were to determine the: (i) reliability of the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) screen time-based sedentary behaviour questionnaire; and (ii) its validity, i.e. the ability of the questionnaire to correctly rank adolescents according to the objectively measured sedentary time. METHODS: A total of 183 adolescents (104 females aged 12.5-17.5 years) were involved in the reliability study. Participants completed the HELENA sedentary questionnaire twice (1 week apart). The validity study comprised 2048 (1212 females) adolescents (12.5-17.5 years of age) included in the HELENA cross-sectional study. Questions included television viewing, computer games, console games, Internet for study and non-study reasons and study during week and weekend days. We compared median values of sedentary time, using accelerometers, by tertiles of self-reported sedentary behaviours and their sum (composite sedentary score). RESULTS: Reliability study: κ-values showed a good agreement (>0.7), except for Internet for study reasons (0.46 weekdays, 0.33 weekend). The questionnaire correctly classified boys' sedentary time when analysed by specific behaviours and by a composite sedentary score. In girls, median values of objectively measured sedentary time were not different across tertiles of self-reported sedentary behaviours or the composite sedentary score. CONCLUSION: The HELENA sedentary questionnaire is reliable, yet only correctly classifies objectively measured sedentary time in boys.
Keywords
CARDIOVASCULAR-DISEASE, RISK, YOUTH, CHILDREN, MORTALITY, PHYSICAL-ACTIVITY

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Chicago
Rey-López, Juan P, Jonatan R Ruiz, Francisco B Ortega, Maïté Verloigne, Germán Vicente-Rodríguez, Luis Gracia-Marco, Frederic Gottrand, et al. 2012. “Reliability and Validity of a Screen Time-based Sedentary Behaviour Questionnaire for Adolescents: The HELENA Study.” European Journal of Public Health 22 (3): 373–377.
APA
Rey-López, Juan P, Ruiz, J. R., Ortega, F. B., Verloigne, M., Vicente-Rodríguez, G., Gracia-Marco, L., Gottrand, F., et al. (2012). Reliability and validity of a screen time-based sedentary behaviour questionnaire for adolescents: the HELENA study. EUROPEAN JOURNAL OF PUBLIC HEALTH, 22(3), 373–377.
Vancouver
1.
Rey-López JP, Ruiz JR, Ortega FB, Verloigne M, Vicente-Rodríguez G, Gracia-Marco L, et al. Reliability and validity of a screen time-based sedentary behaviour questionnaire for adolescents: the HELENA study. EUROPEAN JOURNAL OF PUBLIC HEALTH. 2012;22(3):373–7.
MLA
Rey-López, Juan P, Jonatan R Ruiz, Francisco B Ortega, et al. “Reliability and Validity of a Screen Time-based Sedentary Behaviour Questionnaire for Adolescents: The HELENA Study.” EUROPEAN JOURNAL OF PUBLIC HEALTH 22.3 (2012): 373–377. Print.
@article{2918961,
  abstract     = {BACKGROUND: Although there is a growing interest in the epidemiology of sedentary behaviours, it is unknown whether sedentary behaviour questionnaires are broad markers of sedentary time. The aims of this study were to determine the: (i) reliability of the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) screen time-based sedentary behaviour questionnaire; and (ii) its validity, i.e. the ability of the questionnaire to correctly rank adolescents according to the objectively measured sedentary time.
METHODS: A total of 183 adolescents (104 females aged 12.5-17.5 years) were involved in the reliability study. Participants completed the HELENA sedentary questionnaire twice (1 week apart). The validity study comprised 2048 (1212 females) adolescents (12.5-17.5 years of age) included in the HELENA cross-sectional study. Questions included television viewing, computer games, console games, Internet for study and non-study reasons and study during week and weekend days. We compared median values of sedentary time, using accelerometers, by tertiles of self-reported sedentary behaviours and their sum (composite sedentary score).
RESULTS: Reliability study: \ensuremath{\kappa}-values showed a good agreement ({\textrangle}0.7), except for Internet for study reasons (0.46 weekdays, 0.33 weekend). The questionnaire correctly classified boys' sedentary time when analysed by specific behaviours and by a composite sedentary score. In girls, median values of objectively measured sedentary time were not different across tertiles of self-reported sedentary behaviours or the composite sedentary score.
CONCLUSION: The HELENA sedentary questionnaire is reliable, yet only correctly classifies objectively measured sedentary time in boys.},
  author       = {Rey-L{\'o}pez, Juan P and Ruiz, Jonatan R and Ortega, Francisco B and Verloigne, Ma{\"i}t{\'e} and Vicente-Rodr{\'i}guez, Germ{\'a}n and Gracia-Marco, Luis and Gottrand, Frederic and Moln{\'a}r, D{\'e}nes and Widhalm, Kurt and Zaccaria, Maria and Cuenca-Garcia, Magdalena and Sj{\"o}str{\"o}m, Michael and De Bourdeaudhuij, Ilse and Moreno, Luis A},
  issn         = {1101-1262},
  journal      = {EUROPEAN JOURNAL OF PUBLIC HEALTH},
  language     = {eng},
  number       = {3},
  pages        = {373--377},
  title        = {Reliability and validity of a screen time-based sedentary behaviour questionnaire for adolescents: the HELENA study},
  url          = {http://dx.doi.org/10.1093/eurpub/ckr040},
  volume       = {22},
  year         = {2012},
}

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