Television occupies a large portion of American children's time. Starting in preschool, children spend more time watching television than participating in any other activity except sleeping (D. Anderson, Field, P. Collins, Lorch, & Nathan, 1985; Huston, Wright, Rice, Kerkman, & St. Peters, 1987). Children also have extensive experience with television before they are exposed to many socializing...

BACKGROUND Television viewing has been associated with poor eating behaviours in adolescents. Changing unhealthy eating behaviours is most likely to be achieved by identifying and targeting factors shown to mediate the association between these behaviours. However, little is known about the mediators of the associations between television viewing and eating behaviours. The aim of this study was...

The authors examined the relationship between physical activity, exercise, and sedentary behaviors in 493 college students who were enrolled in 10 conditioning activity classes and had completed questionnaires at the beginning of the course. They analyzed sedentary activities and indicators of participation in exercise and physical activity by demographic variables. Surveyed men reported greate...

BACKGROUND Watching three-dimensional television (3D TV) may strain the eyes. However, other potential harmful effects of 3D TV watching have been rarely investigated. The current study examined the impact of 3D TV watching on neurophysiological responses and cognitive functioning as compared with two-dimensional TV (2D TV) watching. METHODS A total of 72 individuals were randomly assigned to...

The aim of this study was to estimate the prevalence of sedentary behavior and investigate associated factors in adolescents 11 years of age from the 1993 birth cohort in Pelotas, Rio Grande do Sul State, Brazil. Sedentary behavior was investigated with a questionnaire, and was defined as spending more than two hours per day watching television, playing videogames, or using the computer. Of the...

BACKGROUND Possible associations between television viewing and video game playing and children's aggression have become public health concerns. We did a systematic review of studies that examined such associations, focussing on children and young people with behavioural and emotional difficulties, who are thought to be more susceptible. METHODS We did computer-assisted searches of health and...

background: screen time (st), including watching television and playing electronic games are the leading cause of a growing obesity epidemic. this study aimed to evaluate st and its association with physical activity, overweight and socioeconomic status (ses) in children 10 to 12 years of age in sanandaj.   methods: this study was designed as a cross-sectional study, which was conducted in sana...

In their review on the influence of violent media on children and adolescents, Kevin Browne and Catherine HamiltonGiachritsis (Feb 19, p 702) raise the question of why children and adolescents are more susceptible to media violence than adults. The effects of television are best understood in terms of rote learning—ie, by the brain digesting thousands of examples and thereby shaping synaptic co...