MOTIVATION IN MAINTENANCE OF PHYSICAL ACTIVITY

维持身体活动的动机

• 批准号: 2891285
• 负责人: Julie Fleury
• 金额: $ 11.8万
• 依托单位: UNIV OF NORTH CAROLINA CHAPEL HILL
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-15 至 2002-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2891285
• 关键词: audiotape; behavior prediction; behavioral /social science research tag; body physical activity; clinical research; coronary disorder; handbook; human subject; longitudinal human study; medical rehabilitation related tag; motivation; nursing care evaluation; nursing intervention; physical fitness; rehabilitation; statistics /biometry

Randomized trials show consistent benefits among patients who engage in regular physical activity as part of a structured cardiac rehabilitation program. However, failure to maintain even moderate levels of physical activity following rehabilitation has been a fundamental problem. This research is based on the wellness motivation theory, which consists of three dimensions: contextual influences, behavioral change processes and action. The action of interest is physical activity. The purposes of the study are: 1) to determine which variables in the theory are significant predictors of physical activity, including state of activity maintenance, exertion level, and physical fitness, over time, in individuals with diagnosed CHD who have completed a program of cardiac rehabilitation; and 2) to develop and evaluate the strength, effect size and acceptability of an intervention to enhance motivation in the achievement of physical activity. The proposed study will be conducted in two phases. In Phase I, a longitudinal fixed cohort of 312 adults will be sampled following graduation from cardiac rehabilitation. The dependent variables and predictor variables indexing contextual influences, behavioral change processes and physical activity will be measured at three periods: 1) 2 weeks following completion of outpatient cardiac rehabilitation (T1); 2) 3 months following completion of a cardiac rehabilitation (T2); and 3) 6 months following completion of cardiac rehabilitation program (T3). Hierarchical logistic regression will be used to determine which contextual and behavioral change process variables are significant predictors of state of physical activity maintenance. Structural equation modeling will be used to examine the relative impact of key variables in the theory on exertion level and physical fitness. The intervention to be designed to Phase II will include variables found to be predictive of state of activity maintenance, exertion level and physical fitness. Intervention strength will be evaluated through expert review of the intervention treatment manual and audiotape transcriptions of randomly selected intervention sessions. Intervention components will be retained if they are evaluated as at greater than average strength for enhancing motivation for physical activity. Effect size will be determined by changes in participant mean scores on physical activity measures from baseline to post-intervention (T1-T2). Intervention acceptability will be assessed through participant evaluations of the effectiveness of each component and audiotape transcriptions of exit interviews.

随机试验显示，在参与 作为结构化心脏康复的一部分的定期体力活动 程序。然而，即使是未能保持适度的体能水平 康复后的活动一直是一个根本问题。这 研究以健康激励理论为基础，该理论包括 三个维度：背景影响、行为变化过程和 行动。感兴趣的行为是体力活动。的目的是 研究内容包括：1)确定理论中哪些变量具有显著意义 体力活动的预测指标，包括活动维持状态， 运动水平和身体健康，随着时间的推移， 已完成心脏康复计划的确诊冠心病患者； 2)开发和评估强度、效果大小和 提高成就动机的干预措施的可接受性 体力活动。拟议的研究将分两个阶段进行 阶段。在第一阶段，312名成年人的纵向固定队列将是 心脏康复毕业后采集的样本。被依赖的人 索引上下文影响的变量和预测变量， 行为变化过程和体力活动将在 三个阶段：1)门诊心脏手术完成后2周 康复(T1)；2)心脏手术完成后3个月 康复(T2)；和3)心脏手术完成后6个月 康复计划(T3)。将使用分层Logistic回归 确定哪些上下文和行为更改过程变量 是体力活动维持状态的重要预测因子。 将使用结构方程建模来检验相对影响 运动水平与体能理论中的关键变量。 将被设计为第二阶段的干预将包括发现的变量 预测活动维持状态、体力消耗水平和 身体健康。干预力度将通过专家进行评估 干预治疗手册和录音带转录的回顾 随机选择的干预会话。干预组件将 如果它们被评估为大于平均强度，则保留 用于增强体力活动的动力。效果大小将为 由参与者体力活动平均分数的变化决定 从基线到干预后(T1-T2)的测量。干预 接受性将通过参与者对 Exit各组成部分的有效性及录音转录本 采访。