Reliability and Validity of Sedentary Behavior Questionnaire in Turkish Population: Evaluation of Psychometric Properties

Background: Inactivityandsedentarylifestyleareawell-knownriskfactorsforhealtheffects. Manyquestionnairesevaluatephysi-calactivity(PA)level;however,theevaluationof sedentarybehaviorneedsmoreattention. Sedentarybehaviorquestionnaire(SBQ) isareliable,valid,andeasy-to-administertool. Thecurrentstudyaimedatcross-culturallyadaptingandassessingthereliabilityand validity of the Turkish version of SBQ. Methods: SBQ consists of 9 items related to sedentary lifestyle both on weekdays and weekends. SBQ was administrated to 235 participantswiththeattritionrateof 24%,followedbyarepeatedadministrationafter7daystoassessitsreliability. Criterion-related validitywasanalyzedwiththeinternationalphysicalactivityquestionnaire-shortform(IPAQ-SF)withintheconstructvalidityof the SBQ.Test-retestreliabilitywasassessedbytheintraclasscorrelationcoefficient(ICC),whiletheSpearmanrhowasusedforcriterion-related validity. Results: The ICC scores for each parameter ranged from 0.388 to 0.771. The obtained results showed moderate to good test-retest reliability. The validity results of SBQ somewhat violated the standards, which are generally accepted. Items of SBQ “watching TV (includingvideosonVCD/DVD)”,“sittingandtalkingonthephoneorbeingbusyonthephone”,and“doingpaperworkorcomputer work (office work, e-mails, paying bills, etc.)” correlated significantly with body mass index (BMI) (r = -0.138 to 0.247, P < 0.05). Conclusions: The SBQ had good reliability and acceptable validity to assess sedentary behaviors in a Turkish population.