MOTIVATION IN MAINTENANCE OF PHYSICAL ACTIVITY

维持身体活动的动机

• 批准号: 6186871
• 负责人: Julie Fleury
• 金额: $ 8.01万
• 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 2001-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6186871
• 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，在参与治疗的患者中， 作为结构化心脏康复的一部分的定期身体活动 程序. 然而，如果不能保持适度的身体健康， 康复后的活动一直是一个根本问题。 这 研究是基于健康动机理论，其中包括 三个维度：情境影响、行为变化过程和 行动上 感兴趣的行为是身体活动。 的目的 研究的主要内容是：1）确定理论中哪些变量是显著的 身体活动的预测因素，包括活动维持状态， 随着时间的推移， 已完成心脏康复计划的确诊CHD患者; 2）开发和评估强度、效应大小和 可接受的干预措施，以提高动机的成就 身体活动。 拟议的研究将分两个阶段进行。 阶段。 在第一阶段，将对312名成年人进行纵向固定队列研究， 从心脏康复中心毕业后取样 从属 变量和预测变量索引上下文的影响， 行为变化过程和身体活动将在 三个阶段：1）完成门诊心脏检查后2周 康复（T1）; 2）完成心脏移植后3个月 康复（T2）; 3）完成心脏移植后6个月 康复计划（T3）。 将使用分层logistic回归 以确定哪些情境和行为变化过程变量 是身体活动维持状态的重要预测因素。 结构方程模型将被用来研究相对影响 运动水平和身体素质理论中的关键变量。 为第二阶段设计的干预措施将包括发现的变量 预测活动维持状态、运动水平和 身体健康 干预力度将通过专家评估 审查干预治疗手册和录音带传输 随机选择的干预会议。 干预部分将 如果它们被评估为大于平均强度，则保留 增强身体活动的动力。 效应大小将是 由参与者体力活动平均得分的变化确定 从基线到干预后（T1-T2）的测量。 干预 可接受性将通过参与者对 各部件的有效性和出口的录音带传输 采访