FH Campus Wien, Health Sciences, Favoritenstrasse 226, 1100, Vienna, Austria.
Trials. 2021 Jul 22;22(1):477. doi: 10.1186/s13063-021-05422-2.
The control of the dynamic functional leg alignment (dFLA) and biomechanical load are important joint-related aspects regarding the development of osteoarthritis (OA). Research on level walking with feedback on load-related parameters has provided innovative treatment possibilities. With regard to walking on sloped surfaces, fundamental biomechanical knowledge exists. However, comprehensive data on the agreement of kinematics and kinetics of self-paced ramp versus sloped treadmill walking is lacking. Further, deeper insights into the control of the dFLA during decline walking and the usefulness of real-time feedback are missing.
METHODS/DESIGN: Thirty healthy participants aged between 18 and 35 years will be included. They will complete a three-dimensional gait analysis walking self-paced up and down on a 5-m ramp with a 10° inclination. Subsequently, speed-matched to ramp-up walking and self-paced 10° incline split-belt treadmill walking will be assessed. Afterwards, the participants will be observed under four different conditions of 10° declined walking on the same treadmill (a) self-paced walking, (b) self-paced walking with an internal focus of attention, (c) self-paced walking with real-time feedback, and (d) condition c speed-matched walking. The primary outcome parameter will be the frontal knee range of motion (fKROM). Secondary outcomes include the ground reaction force loading rate, spatial-temporal parameters, as well as sagittal, frontal and transversal kinematics, and kinetics for the lower extremities.
The findings aim at improving the understanding of the effects of real-time feedback on the control of the dFLA and lower limb loading. Following clinical practicable methods for effective feedback devices can be developed and evaluated. Additionally, the first dataset comparing kinematic and kinetic parameters for decline and incline ramp walking versus walking on an instrumented treadmill will be available for appropriate intervention planning.
ClinicalTrials.gov NCT04763850 . Prospectively registered on 21 February 2021.
动态功能腿对线（dFLA）的控制和生物力学载荷是与骨关节炎（OA）发展相关的重要关节方面。关于带有关节载荷相关参数反馈的水平行走的研究提供了创新的治疗可能性。关于在倾斜表面上行走，存在基本的生物力学知识。然而，关于自我调节斜坡与倾斜跑步机行走的运动学和动力学的一致性的综合数据却缺乏。此外，在下降行走过程中对 dFLA 的控制以及实时反馈的有用性的深入了解也有所欠缺。
方法/设计：将纳入 30 名年龄在 18 至 35 岁之间的健康参与者。他们将完成一个三维步态分析，自我调节在一个 5 米长、倾斜度为 10°的斜坡上上下行走。随后，将评估速度匹配的斜坡上行走和自我调节的 10°倾斜分带跑步机行走。之后，参与者将在同一跑步机上以 4 种不同的 10°下坡行走条件下进行观察：（a）自我调节行走，（b）自我调节行走时关注内部，（c）自我调节行走时实时反馈，以及（d）条件 c 速度匹配行走。主要结局参数为额状面膝关节活动范围（fKROM）。次要结局包括地面反力加载率、时空参数以及下肢矢状面、额状面和横切面运动学和动力学。
研究结果旨在提高对实时反馈对 dFLA 和下肢载荷控制的影响的理解。可根据临床可行的有效反馈装置开发和评估方法。此外，可获得用于适当干预计划的比较下降和倾斜斜坡行走与仪器化跑步机行走的运动学和动力学参数的第一个数据集。
ClinicalTrials.gov NCT04763850。于 2021 年 2 月 21 日前瞻性注册。
