Clustering of energy balance-related behaviours, sleep, and overweight among Finnish adolescents.

Objectives: To examine how clusters of energy balance-related behaviours (EBRBs), including sleep related factors, were associated with overweight among adolescents.

Methods: In Finland, 4262 adolescents, aged 13-15, participated in the cross-national Health Behaviour in School-aged Children study. The adolescents completed questionnaires assessing EBRBs [sleep duration, discrepancy and quality, physical activity (PA), screen time, junk food, fruit, and vegetable intake] and height and weight.

Validity of self-reported out-of-school physical activity among Finnish 11-year-old children.

Background: The aim of this study is to assess the repeatability and validity of the Finnish 11-year old children's out-of-school physical activity (PA) questionnaire using accelerometer as reference method. A sub-sample of children (N = 155, 60 % participant rate) participating in the Finnish Health in Teens study was recruited in 2013. Children completed a questionnaire measuring PA two times, and wore an accelerometer for seven days.

Computer use, sleep duration and health symptoms: a cross-sectional study of 15-year olds in three countries.

Objectives: This study investigated whether computer use is associated with health symptoms through sleep duration among 15-year olds in Finland, France and Denmark.

Methods: We used data from the WHO cross-national Health Behaviour in School-aged Children study collected in Finland, France and Denmark in 2010, including data on 5,402 adolescents (mean age 15.61 (SD 0.

Do computer use, TV viewing, and the presence of the media in the bedroom predict school-aged children's sleep habits in a longitudinal study?

Background: Electronic media use is becoming an increasingly important part of life for today's school-aged children. At the same time, concern of children's sleep habits has arisen, and cross-sectional studies have shown that electronic media use is associated with short sleep duration and sleep disturbances. The purpose of this longitudinal study was to investigate whether baseline electronic media use and media presence in a child's bedroom predicted sleep habits as well as changes in these sleep habits 18 months later among 10- to 11-year-old children in Finland.