Lower limb joint forces during walking on the level and slopes at different inclinations
Lower limb joint forces during walking on the level and slopes at different inclinations
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DOI：
10.1016/j.gaitpost.2016.01.022
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发表时间：
2016-03-01
期刊：
影响因子：
2.4
通讯作者：
Schwameder, Hermann
中科院分区：
文献类型：
--
作者：
Alexander, Nathalie;Schwameder, Hermann
与水平行走相比，斜坡行走与下肢关节负荷增加相关。因此，本研究的目的是分析下肢关节压缩力以及胫股关节剪切力在斜坡步行在不同的倾角。18名健康男性参与者（年龄：27.0 +/- 4.7岁，身高：1.80 +/- 0.05 m，体重：74.5 +/- 8.2 kg）被要求以1.1 m/s的预设速度在坡道上行走（6米x1.5米），坡度为-18度、-12度、-6度、0度、6度、12度和18度。运动学数据是用12个摄像头的运动捕捉系统（Vicon）捕捉的。动力学数据用嵌入斜坡中的两个测力板（AMTI）记录。使用肌肉骨骼模型（AnyBody）计算下肢关节力。结果表明，下坡行走导致髋关节、胫股关节和髌股关节压力显著增加（p < 0.05），踝关节压力显著降低（p < 0.05）。上坡行走随倾斜度的增加，下肢关节压缩力显著增加（p < 0.05）。在当前研究中，下坡行走对前交叉韧带是一项压力任务的发现不能得到支持，因为前胫股关节剪切力并不随坡度增加。由于文献中胫股关节剪切力模式不同，因此通常应谨慎处理结果。最后，下肢关节力分析提供了更多的洞察力在斜坡行走过程中的结构载荷条件比关节力矩分析。(C)2016爱思唯尔B. V.保留所有权利。
Sloped walking is associated with an increase of lower extremity joint loading compared to level walking. Therefore, the aim of this study was to analyse lower limb joint compression forces as well as tibiofemoral joint shear forces during sloped walking at different inclinations. Eighteen healthy male participants (age: 27.0 +/- 4.7 years, height: 1.80 +/- 0.05 m, mass: 74.5 +/- 8.2 kg) were asked to walk at a preset speed of 1.1 m/s on a ramp (6 m x 1.5 m) at the slopes of -18 degrees, -12 degrees, -6 degrees, 0 degrees, 6 degrees, 12 degrees and 18 degrees. Kinematic data were captured with a twelve-camera motion capture system (Vicon). Kinetic data were recorded with two force plates (AMTI) imbedded into a ramp. A musculoskeletal model (AnyBody) was used to compute lower limb joint forces. Results showed that downhill walking led to significantly increased hip, tibiofemoral and patellofemoral joint compression forces (p < 0.05) and to significantly decreased ankle joint compression forces (p < 0.05). Uphill walking significantly increased all lower limb joint compression forces with increasing inclination (p < 0.05). Findings that downhill walking is a stressful task for the anterior cruciate ligament could not be supported in the current study, since anterior tibiofemoral joint shear forces did not increase with the gradient. Due to diverse tibiofemoral joint shear force patterns in the literature, results should be treated with caution in general. Finally, lower limb joint force analyses provided more insight in the structure loading conditions during sloped walking than joint moment analyses. (C) 2016 Elsevier B.V. All rights reserved.