School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada.
BMC Public Health. 2012 Jul 23;12:539. doi: 10.1186/1471-2458-12-539.
Excessive engagement in screen time has several immediate and long-term health implications among pre-school children. However, little is known about the factors that influence screen time in this age group. Therefore, the purpose of this study was to use the Ecologic Model of Sedentary Behavior as a guide to examine associations between intrapersonal, interpersonal, and physical environment factors within the home setting and screen time among pre-school children.
Participants were 746 pre-school children (≤ 5 years old) from the Kingston, Ontario, Canada area. From May to September, 2011, parents completed a questionnaire regarding several intrapersonal (child demographics), interpersonal (family demographics, parental cognitions, parental behavior), and physical environment (television, computer, or video games in the bedroom) factors within the home setting. Parents also reported the average amount of time per day their child spent watching television and playing video/computer games. Associations were examined using linear and logistic regression models.
Most participants (93.7%) watched television and 37.9% played video/computer games. Several intrapersonal, interpersonal, and physical environment factors within the home setting were associated with screen time. More specifically, age, parental attitudes, parental barriers, parental descriptive norms, parental screen time, and having a television in the bedroom were positive predictors of screen time; whereas, parental education, parental income, and parental self-efficacy were negative predictors of screen time in the linear regression analysis. Collectively these variables explained 64.2% of the variance in screen time. Parental cognitive factors (self-efficacy, attitudes, barriers, descriptive norms) at the interpersonal level explained a large portion (37.9%) of this variance.
A large proportion of screen time in pre-school children was explained by factors within the home setting. Parental cognitive factors at the interpersonal level were of particular relevance. These findings suggest that interventions aiming to foster appropriate screen time habits in pre-school children may be most effective if they target parents for behavioral change.
过度使用屏幕时间会对学龄前儿童的身心健康产生诸多直接和长期的影响。然而,目前对于影响这一年龄段儿童屏幕时间的因素知之甚少。因此,本研究旨在以久坐行为的生态模型为指导,探讨家庭环境中的个体内部、人际间和物理环境因素与学龄前儿童屏幕时间之间的关联。
研究对象为来自加拿大安大略省金斯顿地区的 746 名学龄前儿童(≤5 岁)。2011 年 5 月至 9 月期间,家长完成了一份有关家庭环境中若干个体内部(儿童人口统计学特征)、人际间(家庭人口统计学特征、父母认知、父母行为)和物理环境(卧室中的电视、电脑或视频游戏)因素的问卷。家长还报告了他们的孩子每天平均观看电视和玩视频/电脑游戏的时间。使用线性和逻辑回归模型来检验关联。
大多数参与者(93.7%)观看电视,37.9%玩视频/电脑游戏。家庭环境中的若干个体内部、人际间和物理环境因素与屏幕时间有关。具体而言,年龄、父母态度、父母障碍、父母描述性规范、父母屏幕时间以及卧室中有电视是屏幕时间的正预测因素;而父母教育程度、父母收入和父母自我效能感是线性回归分析中屏幕时间的负预测因素。这些变量共同解释了屏幕时间的 64.2%的方差。人际间的父母认知因素(自我效能感、态度、障碍、描述性规范)解释了大部分(37.9%)的方差。
学龄前儿童的大部分屏幕时间可以用家庭环境中的因素来解释。人际间的父母认知因素尤其重要。这些发现表明,旨在培养学龄前儿童适当屏幕时间习惯的干预措施如果以父母为行为改变的目标,可能会更有效。