Real-time Gait Retraining to Reduce Loading in Runners

实时步态再训练以减少跑步者的负荷

• 批准号: 7429765
• 负责人: IRENE S DAVIS
• 金额: $ 28.58万
• 依托单位: UNIVERSITY OF DELAWARE
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7429765
• 关键词: American; Ankle; Control Groups; Country; Cumulative Trauma Disorders; Development Plans; Distal; Employee Strikes; Exercise; Exhibits; Feedback; Female; Gait; Goals; Healthy People 2010; Incidence; Injury; Investigation; Kinetics; Knee; Knee joint; Life; Lower Extremity; Mechanics; Medial; Monitor; Nature; Pattern; Preventive Medicine; Prospective Studies; Protocols documentation; Purpose; Randomized; Rate; Recruitment Activity; Rehabilitation therapy; Research Personnel; Risk; Running; Shock; Stress Fractures; Time; Training; Visit; Week; aged; ankle joint; experience; fitness; follow-up; foot; gait examination; instrument; joint stiffness; kinematics; male; programs; tibia; tool; visual feedback

DESCRIPTION (provided by applicant): The Healthy People 2010 initiative encourages people to engage in regular exercise throughout their lives. Running is one of the most popular fitness activities that Americans engage in. However, due to its repetitive nature, overuse injuries are common. Stress fractures are among the most serious overuse injuries a runner sustains. Retrospective and prospective studies have shown stress fractures are related, in part, to the amount of tibial shock a runner experiences. This suggests that reducing tibial shock would reduce the risk of these serious bony injuries. Therefore, the purposes of this investigation are: 1. to establish whether tibial shock (and consequently vertical loads) can be reduced through realtime feedback in runners exhibiting high shock; 2. determine which kinematic strategies are used to reduce lower extremity loading; 3. determine whether the changes made during the retraining on the treadmill transfer to overground running; and 4. determine whether these gait changes persist over a 6 month period. 40 male and female runners free of current injuries, aged 18-45 yrs and running at least 10 miles/week will be recruited. They will exhibit increased tibial shock, determined by a prescreening assessment. Subjects will be randomly assigned to one of two groups and undergo a baseline instrumented gait analysis of their lower extremity kinematics and kinetics. 20 subjects will be placed into a 2-week, four times a week retraining program. They will run on an instrumented treadmill with an accelerometer tightly fixed to their distal-medial tibia. With each foot strike, they will be provided with real-time visual feedback of their tibial shock. They will be asked to reduce their shock to within normal limits (indicated by a target on the monitor). Run time will be gradually increased and feedback gradually removed over the 12 sessions. The second group will serve as a control group and undergo a similarly progressed treadmill protocol with no feedback. A post-training overground gait analysis will be conducted following the treatment, and at a 6-month follow-up for both groups. RELEVANCE; Results from this investigation will provide information regarding the ability to alter and maintain gait mechanics to reduce the risk for lower extremity stress fractures. These results can be applied to both preventative medicine as well as rehabilitation with the planned development of a simple portable tool to identify and retrain those at risk.

描述（由申请人提供）：《健康人民2010年计划》鼓励人们一生进行定期运动。跑步是美国人从事最受欢迎的健身活动之一。但是，由于其重复性，过度使用伤害很常见。压力骨折是跑步者所忍受的最严重的过度伤害之一。回顾性和前瞻性研究表明，应力骨折部分与跑步者经历的胫骨休克量有关。这表明减少胫骨冲击会降低这些严重的骨损伤的风险。因此，本研究的目的是：1。确定胫骨冲击（以及因此垂直载荷）是否可以通过表现出高冲击的跑步者的实时反馈来减少； 2.确定使用哪种运动学策略来减少下肢载荷； 3.确定在跑步机转移到地上运行期间进行的更改；和4。确定这些步态变化是否在6个月内持续存在。将招募40名男性和女性跑步者，没有目前的伤病，年龄18-45岁，至少跑步10英里/周。它们将表现出更多的胫骨冲击，这是由预筛查评估确定的。受试者将随机分配给两个组之一，并对其下肢运动学和动力学进行基线仪器步态分析。将有20个受试者分为2周，每周四次再培训计划。他们将在仪器跑步机上运行，​​并将加速度计紧紧固定在其远端胫骨上。每次脚罢工，他们都会获得胫骨冲击的实时视觉反馈。将要求他们将冲击减少到正常限制内（由监视器上的目标表示）。运行时间将逐渐增加，并在12个会话中逐渐删除反馈。第二组将充当对照组，并在没有反馈的情况下进行类似进步的跑步机协议。治疗后将进行训练后的地面步态分析，并在两组中进行6个月的随访。关联;这项调查的结果将提供有关改变和维持步态力学能力以降低下肢应力骨折的风险的信息。这些结果可以应用于预防医学和康复，并计划开发一种简单的便携式工具，以识别和侦察处于危险中的工具。