A Mobile Tai Chi Platform for Fall Prevention in Older Adults

项目摘要 拟议工作的总体目标是开发一个能够提供和监测遵守情况的平台， 老年人家庭简化太极干预的熟练程度和安全性。 在这个快速通道STTR项目的第一阶段，我们将进一步开发一种新的方法来评估TAI 基于可穿戴传感器数据的CHI性能遵守、熟练程度和安全性。指标 坚持性和安全性将被确定。多项目熟练程度评分指标将使用 改进的德尔福共识流程。受试者将被要求在实验室里从 简化太极干预，同时佩戴九轴传感器网络。熟练程度将通过以下方式进行评估 太极专家使用之前开发的度量标准。收集到的数据将用于帮助开发 预测遵从性、熟练程度和安全性的算法。将执行敏感度分析以确定 获得满意结果所需的最少传感器数量。在第一阶段，我们还将开展 利益攸关方焦点小组，向用户友好型远程太极平台的开发提供信息。 在这个快速通道太极拳项目的第二阶段，我们将通过一个 以用户为中心的设计理念。为了实现这一目标，我们将开发一个由无线 身体传感器网络，平板电脑(收集数据，并提供指令和反馈)，以及网络- 基于仪表板(用于远程访问程序数据)。将采用迭代设计方法，基于 关于最终用户的需求，包括从业者、太极拳指导员和研究人员。焦点小组将是 在项目过程中被用来确定这些信息。接下来，我们将论证 在连续3个队列中跟踪3个月培训期间的遵从性、熟练程度和安全性 老年人(n=10)。对于我们平台的这一初步测试，受试者将参加为期12周的 以家庭为基础的简化太极计划通过预先编程的平板电脑提供，并辅以实验室 在基线、3周、6周和12周进行访问。受试者将被要求在家中练习至少45分钟 每周3次。即时实验室访问将：a)模拟典型的家庭练习课程，并提供 关于可用性的附加数据，并提供遵守和熟练程度算法的估计；以及b)允许 功能和姿势控制的纵向评估，将被用来探索 平台派生的遵从性和熟练程度以及跌倒风险的衡量标准。

Project Summary The overall goal of the proposed work is to develop a platform capable of delivering and monitoring adherence, proficiency, and safety of a home-based simplified Tai Chi intervention for older adults. During Phase I of this Fast-Track STTR project we will further develop a novel approach to assessing Tai Chi performance adherence, proficiency, and safety based on wearable sensor data. Metrics of adherence and safety will be determined. A multi-item proficiency scoring metric will be developed using a modified Delphi consensus process. Subjects will be asked to perform movements in the laboratory from the simplified Tai Chi intervention while wearing a network of nine-axis sensors. Proficiency will be assessed by Tai Chi experts using the previously developed metric. Collected data will be used to aid development of algorithms to predict adherence, proficiency, and safety. Sensitivity analyses will be performed to identify the minimum number of sensors necessary to achieve satisfactory results. During Phase I we will also carry out stakeholder focus groups to inform the development of a user-friendly Tele-Tai Chi platform. During Phase II of this Fast-Track STTR project we will develop a user-friendly ‘Tele-Tai Chi’ platform via a user-centered design approach. To accomplish this aim, we will develop a platform consisting of a wireless body sensor network, a tablet computer (to collect data, and provide instructions and feedback), and a web- based dashboard (for remote access to program data). An iterative design approach will be employed based on the needs of the end-user including practitioners, Tai Chi instructors, and researchers. Focus groups will be employed to ascertain this information over the course of the project. Next we will demonstrate feasibility of tracking adherence, proficiency and safety over a 3-month training period in a 3 consecutive cohorts (n=10 each) of older adults. For this preliminary test of our platform, subjects will participate in a 12-week home-based simplified Tai Chi program delivered via pre-programed tablets, supplemented with laboratory visits at baseline, 3, 6, and 12 weeks. Subjects will be asked to practice at home for 45 minutes a minimum of 3 times per week. Instumented laboratory visits will: a) simulate typical home practice sessions and provide additonal data on usability and inform estimates of adherence and proficiency algorithms; and b) allow for longitudinal evaluation of function and postural control, which will be used to explore associations between platform-derived measures of adherence and proficiency and fall risk.