Physical activity (PA) is important for children’s growth and development and for their current and future health. Schools, especially during physical education (PE), are important locations for children to accrue PA. The purpose of this study was to assess the PA levels of preschool children during structured PE lessons and to evaluate the impact of selected characteristics (e.g., lesson context, length, and location; teacher behavior; class size; activity area density). Trained observers used SOFIT (System for Observing Fitness Instruction Time) to assess 90 structured PE lessons taught by 25 different teachers. Intact classes (n = 5 to 6 and representing 3 different grade levels) in 4 selected preschools were observed on 4 days over a 4-week period. Overall, children engaged in moderate-to-vigorous physical activity (MVPA) 49.9% (SD = 15.7) of lesson time and there were differences in MVPA% among the four preschools, by lesson context, and by teacher behavior. There were no significant differences in MVPA% either between indoor (n = 69) and outdoor (n = 21) lessons or among the 3 grade levels. Even though the lessons approached the 50% MVPA guideline, the brevity of them left children far short of recommended daily amounts of PA. Future studies should investigate how preschools can increase on-campus opportunities for PA both during PE and throughout the school days. Copyright © 2015 by authors and Scientific Research Publishing Inc.

The development of children’s fundamental motor skills (FMS) is shaped by the environment surrounding them. The purpose of this study was to examine whether the changes of children’s FMS after an intervention program differed between classes conducted in different schooling conditions. Participants were 295 preschool children (62 boys, 133 girls; M = 5.4 years; SD = 0.28) from eight preschools in Hong Kong. Children participated in an 8-week FMS program and their FMS were assessed using the Test of Gross Motor Development-2 (TGMD-2). A linear mixed model was used to analyze the association on the changes of FMS score between children in different schooling conditions: (1) teaching venue size (large or small); and (2) class size (large, medium, or small), while accounting for the clustering of participants within preschools. The changes of object control skills were significantly different between groups with different teaching venue size (p = 0.000) (small: 5.54 (SD = 5.84) vs. large: 2.46 (SD = 6.42)) and different class size (p = 0.000) (small: 8.12 (SD = 6.34) vs. medium: 2.92 (SD = 6.26) vs. large: 4.00 (SD = 5.79)). The findings have practical implications for the teaching of FMS in that the social and physical environment in preschools should be considered for the design of FMS intervention programs. Copyright © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Objective. To examine the independent, competing, and interactive effects of perceived availability of specific types of media in the home and neighborhood sport facilities on adolescents' leisure-time physical activity (PA).
Methods. Survey data from 34 369 students in 42 Hong Kong secondary schools were collected (2006-07). Respondents reported moderate-to-vigorous leisure-time PA, presence of sport facilities in the neighborhood and of media equipment in the home. Being sufficiently physically active was defined as engaging in at least 30 minutes of non-school leisure-time PA on a daily basis. Logistic regression and post-estimation linear combinations of regression coefficients were used to examine the independent and competing effects of sport facilities and media equipment on leisure-time PA.
Results. Perceived availability of sport facilities was positively (ORboys = 1.17; ORgirls = 1.26), and that of computer/Internet negatively (ORboys = 0.48; ORgirls = 0.41), associated with being sufficiently active. A significant positive association between video game console and being sufficiently active was found in girls (ORgirls = 1.19) but not in boys. Compared with adolescents without sport facilities and media equipment, those who reported sport facilities only were more likely to be physically active (ORboys = 1.26; ORgirls = 1.34), while those who additionally reported computer/Internet were less likely to be physically active (OR boys = 0.60; ORgirls = 0.54).
Conclusions. Perceived availability of sport facilities in the neighborhood may positively impact on adolescents' level of physical activity. However, having computer/Internet may cancel out the effects of active opportunities in the neighborhood. This suggests that physical activity programs for adolescents need to consider limiting the access to computer-mediated communication as an important intervention component.
[Copyright of International Journal of Pediatric Obesity is the