Exercise Behavior in Heart Failure Patients

描述（由申请人提供）：每年有550，000名新的人被诊断患有心力衰竭（HF）。在2006年，报告了110万例出院，2010年美国HF的估计直接和间接成本约为392亿美元。 有证据表明，运动可以帮助HF患者改善其功能能力和生活质量，并与降低死亡率和住院率相关。运动已被证明是有效和安全的人诊断在所有纽约心脏协会分类（I - IV）。然而，开始和/或维持运动行为的HF患者百分比较低，因为HF患者报告与其他规定的HF管理活动相比，运动更困难。 了解增强或阻碍HF患者开始和维持运动行为能力的因素对于开发干预措施以帮助他们改善功能能力和生活质量非常重要。自我效能感、结果期望和社会支持都是班杜拉社会认知理论中的概念。社会认知理论的这些具体概念已被证明是一些老年人开始和维持运动的重要预测因素。已经有几个模型进行了测试，以解释运动行为，利用社会认知理论的组成部分，一般为老年人和心脏康复患者。这些模型彼此不相同，迄今为止，还没有使用社会认知理论的特定概念的运动行为模型在HF人群中进行过测试。 本研究的目的是了解影响其他人群运动行为的因素是否能解释HF患者的运动行为。本研究的具体目的是识别和确定与HF患者运动行为相关的理论驱动因素的强度。 对HF患者运动行为增加相关因素的更深入了解将有助于开发更有效的干预措施，以促进运动行为，改善整体健康状况并减少住院治疗。 公共卫生相关性：心力衰竭（HF）是一种通过降低功能能力和生活质量而给我们社会中的许多人带来负担的疾病。运动已被证明可以帮助HF患者增加他们在白天能够做的事情，从而提高他们的生活质量。然而，HF患者报告称，运动比其他规定的HF管理行为（例如，低钠饮食或定期称重）更难进行。为了设计干预措施来帮助HF患者增加运动行为，我们需要了解哪些因素与该人群的运动密切相关。

DESCRIPTION (provided by applicant): Each year 550,000 new people are diagnosed with heart failure (HF). In the year 2006, 1.1 million hospital discharges were reported, and the estimated direct and indirect cost of HF in the United States is approximately $39.2 billion for 2010. There is evidence that exercise can help patients with HF improve their functional capacity and quality of life as well as being associated with decreased mortality and hospitalization. Exercise has been shown to be efficacious and safe for people diagnosed in all New York Heart Association Classifications (I - IV). However, a low percentage of HF patients initiate and/or maintain exercise behavior as HF patients have reported more difficulty with exercising compared to other prescribed HF management activities. Understanding the factors that enhance or hinder HF patients' ability to begin and maintain exercise behavior is important for development of interventions to assist them in improving their functional capacity and quality of life. Self-efficacy, outcome expectancy, and social support are all concepts from Bandura's social- cognitive theory. These specific concepts of social cognitive theory have been shown to be significant predictors for exercise initiation and maintenance in some older adult populations. There have been several models tested to explain exercise behavior utilizing components of social cognitive theory in general for older adults and patients in cardiac rehabilitation. These models are not identical to each other and to date no model of exercise behavior using specific concepts of social cognitive theory has been tested in the HF population. The purpose of this study is to understand if factors affecting exercise behavior in other populations explain exercise behavior in HF patients. The specific aim of this research is to identify and determine the strength of theory-driven factors associated with exercise behavior in HF patients. A greater understanding of factors associated with increased exercise behavior in HF patients will lead to the development of more effective interventions to promote exercise behavior that improves overall health status and decreases hospitalizations. PUBLIC HEALTH RELEVANCE: Heart failure (HF) is a disease that burdens many people in our society by decreasing their functional ability and quality of life. Exercise has been shown to help people with HF increase what they are able to do during the day which improves their quality of life. However, HF patients have reported that exercise is more difficult to perform than other prescribed HF management behaviors (e.g. eating a low sodium diet or regularly weighing themselves). In order to design interventions to help people with HF to increase exercise behavior, we need to understand what factors are strongly associated with exercise in this population.