Changes in Physical Activity and Diet in Colorectal Cancer Survivors

描述（由申请人提供）：在美国估计有110万结直肠癌幸存者。生活习惯，包括缺乏身体活动和不良的饮食习惯，是结直肠癌发病率、复发和死亡的危险因素，也会增加患其他慢性疾病的风险。大多数结直肠癌幸存者没有定期参加体育活动，也没有达到健康饮食的建议，包括摄入足够的水果和蔬菜以及食用低脂肪饮食。然而，癌症诊断可能会刺激一些癌症幸存者积极的健康行为改变。以前的研究主要集中在了解乳腺癌幸存者的健康行为改变。相比之下，拟议的研究采用了一种全面的、理论驱动的方法来了解结直肠癌幸存者的身体活动和饮食改变的程度、预测因素、情感和认知影响，结直肠癌幸存者代表了一个庞大但相对较少研究的幸存者群体。本研究的概念框架来自社会认知理论和健康与疾病自我调节的常识模型。最近完成局部或局部期结直肠癌治疗的个体将完成一项全面的基线调查，包括评估他们目前的身体活动和饮食习惯，以及相关的社会认知和自我调节预测指标。参与者将在3个月和6个月后完成随访评估，这将提供有关身体活动和饮食变化的数据，以及此类行为变化的潜在情感和认知影响。此外，我们将检查幸存者对健康促进计划的偏好。了解健康行为改变的自然过程和预测因素是指导有效干预的行之有效的方法。加强对结直肠癌幸存者的身体活动和饮食改变的社会认知和自我调节原因以及情感和认知影响的了解，将为这一人群的健康行为干预措施的发展提供信息。有效的健康行为干预措施的发展和传播已被强调为未来癌症生存研究的一个关键领域。公共卫生相关性：在美国，随着癌症幸存者人数的增加，人们对帮助癌症幸存者做出积极的健康行为改变的兴趣越来越大。拟议的研究考察了结直肠癌幸存者的身体活动和饮食改变的程度、预测因素和情感/认知影响。这项研究的结果将为行为干预的发展提供信息，旨在增加结直肠癌幸存者的身体活动并促进健康的饮食习惯。

DESCRIPTION (provided by applicant): There are an estimated 1.1 million survivors of colorectal cancer in the United States. Lifestyle practices including physical inactivity and poor dietary habits are risk factors for colorectal cancer incidence, recurrence, and mortality, and also increase the risk for other chronic illnesses. Most colorectal cancer survivors fail to engage in regular physical activity and do not meet recommendations for eating a healthy diet, including sufficient intake of fruits and vegetables and consumption of a low fat diet. However, cancer diagnosis may spur positive health behavior changes for some cancer survivors. Previous research has focused primarily on understanding health behavior changes made by breast cancer survivors. In contrast, the proposed research uses a comprehensive, theory-driven approach to understand the degree, predictors, and affective and cognitive effects of physical activity and dietary changes made by survivors of colorectal cancer, who represent a large but relatively understudied survivor population. The conceptual framework for the proposed research draws from social cognitive theory and the common-sense model of health and illness self-regulation. Individuals who recently finished treatment for localized or regional stage colorectal cancer will complete a comprehensive baseline survey, including assessments of their current physical activity and dietary practices, as well as relevant social cognitive and self-regulatory predictors. Participants will complete follow-up assessments 3 months and 6 months later, which will provide data on changes in physical activity and diet, as well as potential affective and cognitive effects of such behavior changes. Additionally, we will examine survivors' preferences regarding health promotion programs. Understanding the natural course and predictors of health behavior change is a proven approach for guiding effective interventions. An enhanced understanding of the social cognitive and self-regulatory causes, and affective and cognitive effects, of physical activity and dietary changes made by colorectal cancer survivors will inform the development of health behaviors interventions for this population. The development and dissemination of effective health behavior interventions has been highlighted as a key area for future cancer survivorship research. PUBLIC HEALTH RELEVANCE: In parallel with the increase in the cancer survivor population in the United States, there has been growing interest in helping cancer survivors to make positive health behavior changes. The proposed research examines the degree, predictors, and affective/cognitive effects of physical activity and dietary changes made by colorectal cancer survivors. The results of this research will inform the development of a behavioral intervention designed to increase physical activity and promote healthy dietary practices among colorectal cancer survivors.