Activity, Gait, and Efficacy (AGE II): Functional Limitations and Quality of Life

描述（由申请人提供）：本申请旨在测试dvd提供的家庭体育活动干预的有效性，该干预针对灵活性、调节和平衡（FTB）活动，并将其与注意力控制条件进行比较，以减少老年人的功能限制，提高功能表现和生活质量（QOL）。据推测，参加为期6个月的FTB计划将改善功能健康和平衡，减少功能限制，并在试验结束和6个月随访时改善整体生活质量。进一步的目的是纵向测试身体活动对功能限制和生活质量影响的中介。最终目的是将REAIM （Reach, Effectiveness, Adoption, Implementation, and Maintenance）原则应用到拟议研究的设计和评估中，以确定通过DVD媒体进行体育活动对公众健康的潜在影响。拟议申请的目的和目标与国家老龄问题研究所关于改善美国老年人健康和生活质量的战略是一致的。此外，我们的发现的范围和普遍性可能是相当可观的。我们建议从伊利诺斯州中部招募并随机分配250名年龄较大（65岁以上）的低运动成年人参加FTB条件，并通过DVD在家中提供或接受健康老龄化DVD和同等接触时间的注意力控制条件。在6个月的随访评估后，控制条件将提供FTB计划。主要指标是功能表现和功能限制，次要指标是自我效能、身体活动、健康状况和生活质量。所有测量结果将在基线、6个月和12个月时进行评估。所有假设都将在协方差建模框架内使用潜在增长曲线模型进行检验。

DESCRIPTION (provided by applicant): This application proposes to test the effectiveness of a DVD-delivered home-based physical activity intervention targeting flexibility, toning, and balance (FTB) activities when compared with an attention control condition to reduce functional limitations and enhance functional performance and quality of life (QOL) in older adults. It is hypothesized that participation in this 6-month FTB program will improve functional fitness and balance, reduce functional limitations, and improve overall quality of life at the end of the trial and at 6-month follow-up. A further aim is to longitudinally test the mediators of physical activity effects on functional limitations and quality of life. A final aim is to implement REAIM (Reach, Effectiveness, Adoption, Implementation, and Maintenance) principles into the design and evaluation of the proposed study in order to determine the potential public health impact of delivering physical activity via DVD media. The aims and objectives of the proposed application are consistent with the National Institute on Aging's strategies for improving the health and quality of life of older Americans. Additionally, our reach and generalizability of findings are likely to be considerable. We propose to recruit and randomly assign 250 older (65+ years) low-active adults from across central Illinois to the FTB condition to be delivered in the home by DVD or an attention control condition receiving a healthy aging DVD and equivalent contact time. The control condition will be offered the FTB program following the 6- month follow-up assessments. Primary outcome measures are functional performance and functional limitations with secondary outcomes being self-efficacy, physical activity, health status, and quality of life. All measured will be assessed at baseline, six and twelve months. All hypotheses will be tested using latent growth curve modeling within a covariance modeling framework.