Self-control constructs related to measures of dietary intake and physical activity in adolescents
Self-control constructs related to measures of dietary intake and physical activity in adolescents
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DOI：
10.1016/j.jadohealth.2007.06.013
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发表时间：
2007-12-01
影响因子：
7.6
通讯作者：
Ainette, Michael G.
中科院分区：
文献类型：
--
作者：
Wills, Thomas A.;Isasi, Carmen R.;Ainette, Michael G.
目的：测试青少年饮食摄入和身体活动模式相关的自我调节概念，我们预测这些概念会受到自我控制模型组成部分的影响。方法：采用多民族抽样调查方法，对某大都市地区公立学校九年级学生（N = 539）进行调查。验证性分析测试了自我控制的测量结构。结构方程模型测试了自我控制结构与水果和蔬菜摄入量、饱和脂肪摄入量、身体活动和久坐行为之间的关系。结果：14项自我控制指标的验证性分析显示，自我控制能力较强（计划性）和较差（冲动性）的潜在构念最符合双因子结构。良好的自制力与更多的水果和蔬菜摄入、更多的运动参与和更少的久坐行为有关。自制力差与摄入更多饱和脂肪和较少剧烈运动有关。这些影响与性别、种族和父母教育无关，而这些因素本身与饮食和锻炼措施有关。多组模型表明，自我控制的效果在性别和种族亚组之间具有可比性。结论：自我控制观念与青少年饮食摄入和身体活动模式有关。注意自我控制过程可能是必要的预防方案，以改善儿童和青少年的健康行为。(c) 2007年青少年医学学会。版权所有。
Purpose: To test self-regulation concepts in relation to dietary intake and physical activity patterns in adolescence, which we predicted to be influenced by components of a self-control model.Methods: A survey was conducted with a multiethnic sample of 9th grade public school students in a metropolitan area (N = 539). Confirmatory analysis tested the measurement structure of self-control. Structural equation modeling tested the association of self-control constructs with measures of fruit and vegetable intake, saturated fat intake, physical activity, and sedentary behavior.Results: Confirmatory analysis of 14 indicators of self-control showed best fit for a two-factor structure, with latent constructs of good self-control (planfulness) and poor self-control (impulsiveness). Good self-control was related to more fruit and vegetable intake, more participation in sports, and less sedentary behavior. Poor self-control was related to more saturated fat intake and less vigorous exercise. These effects were independent of gender, ethnicity, and parental education, which themselves had relations to diet and exercise measures. Multiple-group modeling indicated that effects of self-control were comparable across gender and ethnicity subgroups.Conclusions: Self-control concepts are relevant for patterns of dietary intake and physical activity among adolescents. Attention to self-control processes may be warranted for prevention programs to improve health behaviors in childhood and adolescence. (c) 2007 Society for Adolescent Medicine. All rights reserved.