Among children , these interventions demonstrated reduced screen time , increased physical activity , and improved diet- and weight-related outcomes .
CONTEXT Sedentary time spent with screen media is associated with obesity among children and adults .
Obesity has potentially serious health consequences , such as heart disease and diabetes .
This Community Guide systematic review examined the effectiveness and economic efficiency of behavioral interventions aim ed at reducing recreational ( i.e. , neither school- nor work-related ) sedentary screen time , as measured by screen time , physical activity , diet , and weight-related outcomes .
An intervention to reduce television viewing by preschool children.
BACKGROUND Television viewing has been associated with increased violence in play and higher rates of obesity . Although there are interventions to reduce television viewing by school-aged children , there are none for younger children . OBJECTIVE To develop and evaluate an intervention to reduce television viewing by preschool children . DESIGN R and omized controlled trial conducted in 16 preschool and /or day care centers in rural upstate New York . PATIENTS Children aged 2.6 through 5.5 years . INTERVENTION Children attending intervention centers received a 7-session program design ed to reduce television viewing as part of a health promotion curriculum , whereas children attending the control centers received a safety and injury prevention program . OUTCOME MEASUREMENTS Change in parent-reported child television/video viewing and measured growth variables . RESULTS Before the intervention , the intervention and control groups viewed 11.9 and 14.0 h/wk of television/videos , respectively . Afterward , children in the intervention group decreased their television/video viewing 3.1 h/wk , whereas children in the control group increased their viewing by 1.6 h/wk , for an adjusted difference between the groups of -4.7 h/wk ( 95 % confidence interval , -8.4 to -1.0 h/wk ; P = .02 ) . The percentage of children watching television/videos more than 2 h/d also decreased significantly from 33 % to 18 % among the intervention group , compared with an increase of 41 % to 47 % among the control group , for a difference of -21.5 % ( 95 % confidence interval , -42.5 % to -0.5 % ; P = .046 ) . There were no statistically significant differences in children 's growth between groups . CONCLUSIONS This study is the first to show that a preschool-based intervention can lead to reductions in  young children 's television/video viewing . Further research is needed to determine the long-term effects associated with reductions in young children 's television viewing
Among children , these interventions demonstrated reduced screen time , increased physical activity , and improved diet- and weight-related outcomes .
CONTEXT Sedentary time spent with screen media is associated with obesity among children and adults .
Obesity has potentially serious health consequences , such as heart disease and diabetes .
This Community Guide systematic review examined the effectiveness and economic efficiency of behavioral interventions aim ed at reducing recreational ( i.e. , neither school- nor work-related ) sedentary screen time , as measured by screen time , physical activity , diet , and weight-related outcomes .