PHYSICAL ACTIVITY BEHAVIOR CHANGE AMONG WIC MOTHERS

这项研究与长期目标一致，即通过改变久坐不动人群的身体活动（PA）行为来降低疾病风险。 人口是参加妇女、儿童和社区营养方案的低收入母亲。 本文的理论框架是基于行为改变的跨理论模型和社会认知理论。 经过两次预备性研究后，将对护士咨询干预措施进行试点测试。 具体目标是：a）观察是否存在假设方向的趋势，以及B）确定与PA行为改变干预对WIC母亲的行为、社会和认知结果相关的效应量（对于较大的临床试验）。 中试采用准实验非等效组设计，系统随机样本（N=80）。 两个WIC项目将被随机分配到：1）护士咨询的行为改变干预和每两周一次的电话提示（8周）;或2）对照（自我乳房检查咨询）。 因变量包括：行为变化的阶段和过程、PA行为以及社会和认知概念（即，社会支持，自我效能，以及对PA的感知益处和障碍）。 五个假设是，咨询后十周。1)实验组（EX）在PA行为改变阶段比对照组（C）提前。 2)EX组的PA行为比C组更强。 3)EX组和C组的受试者将在行为改变的各个阶段以不同的方式使用行为改变的十个过程。 4)EX组将比C组报告更多的社会和认知因素的改善。S）改善的社会和认知因素将与PA行为改变阶段的进展相关。 将使用残差变化评分和ANOVA统计检验及事后比较分析数据。 拟议的培训和研究的成果是为博士后研究做准备。

This research is consistent with a long-term objective of disease risk-reduction through physical activity (PA) behavior change in populations at risk from sedentary living. The population is low-income mothers enrolled in the WIC nutrition program. The theoretical framework is based on the Transtheoretical Model of behavior change and Social Cognitive theory. After two preparatory studies, a pilot-test of a nurse-counseled intervention will take place. The specific aims are: a) to see if there are trends in the hypothesized direction, and b) to identify the effect size (for a larger clinical trial), associated with a PA behavior change intervention on behavioral, social and cognitive outcomes among WIC mothers. The pilot-test uses a quasi experimental nonequivalent groups design with a systematic random sample (N=80). Two WIC programs will be randomly assigned to: 1) a nurse-counseled behavior change intervention and biweekly phone prompts (8 weeks); or, 2) control (counseling on self-breast exam). Dependent variables include: stages and processes of behavior change, PA behavior, and both social and cognitive concepts (i.e., social support, self-efficacy, and perceived benefits and barriers to PA). The five hypotheses are, ten weeks post-counseling. 1) The experimental (EX) group will advance in stage of PA behavior change more than the control (C) group. 2) The EX group will have greater PA behavior than the C group. 3) Subjects in both EX and C groups will use the ten processes of behavior change differently across the stages of behavior change. 4) The EX group will report improved social and cognitive factors more than the C group. S) Improved social and cognitive factors will be associated with advancement in stage of PA behavior change. Data will be analyzed using residualized change scores and the ANOVA statistical test with post hoc comparisons. The outcome of the proposed training and research is preparation for post-doctoral research.