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• W2000827663 abstract "It has been well documented that time spent with screen media increases the risk of overweight among children and adolescents. However, data with preschool aged children is limited. PURPOSE To determine the influence of screen media (television (TV), video, computer, and videogame usage) on body composition and physical activity levels of 4–7 year old children. METHODS 100 children (52 girls: age 5.9 ± 1.3 yrs, BMI 16.5 ± 2.6 kg//m 2; 48 boys: age 5.7 ± 1.4 yrs, BMI 16.2 ± 1.7 kg//m 2) were measured for height and weight. Body fat mass (FM: kg) and fat free mass (FFM: kg) were assessed by dual-energy X-ray absorptiometry. MTI Actigraph monitors were worn for 6±1 days for measurement of moderate to vigorous physical activity (MVPA, min/d). Screen media time (hrs/d) was reported by parental proxy. TV time was de fined as time spent watching TV, videotapes, or DVD 's, while computer time (CT) was de fined as time spent using a home computer or video game. RESULTS Screen media time was associated with BMI (r = 0.27, p<0.05), body weight (r = 0.21, p<0.05) and FM (r = 0.19, p = 0.06). There was not a significant association between screen media and MVPA for boys (r = 0.16, p>0.05) but a significant inverse association for girls (r = −0.31, p<0.05). Although not significant, boys spent 18%more time with screen media (p = 0.06) than girls with boys spending significantly more time in front of the computer (33.0 ± 38.6 min vs. 16.8 ± 18.8 min, p<0.05) than girls. When evaluating the quantity of time spent watching TV or CT, boys who watch more than 2 hours per day of TV had significantly more FM (23.8 ± 7.3 kg) than boys who watched less than 2 hours per day of TV (FM: 20.4 ± 6.12 kg, p<0.05). However, there was no difference in FM between boys who spent the most time using the computer than the least active computer users. Girls in the greatest tertile of TV viewing (>3 hrs/day) had 31%higher BMI (p<0.05) and 32% more FM than girls watching less than 2 hrs of TV/day. MVPA was significantly lower in girls who spent more than 25 min/day in CT (MVPA: 247.3 ± 55.3 min) compared to girls spending less than 25 min/day in CT (MVPA: 280.1 ± 44.4 min, p<0.05). CONCLUSIONS Screen media appears to be associated with body composition measures among preschool aged children and recommendations to limit screen media time to less than 2 hours per day should be encouraged with this age group. In addition, young girls may be replacing MVPA with CT and should be further investigated. This work was supported by the University of Nebraska-Kearney Research Services Council and a York University Faculty of Arts Research Grant." @default.
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• W2000827663 date "2005-05-01" @default.
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• W2000827663 title "Influence Of Screen Media On Body Composition and Physical Activity In Preschool Age Children." @default.
• W2000827663 doi "https://doi.org/10.1097/00005768-200505001-01379" @default.
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