Medial knee joint loading during stair ambulation and walking while carrying loads
Medial knee joint loading during stair ambulation and walking while carrying loads
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DOI：
10.1016/j.gaitpost.2012.08.008
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发表时间：
2013-03-01
期刊：
影响因子：
2.4
通讯作者：
Mirka, Gary A.
中科院分区：
文献类型：
--
作者：
Hall, Michelle;Boyer, Elizabeth R.;Mirka, Gary A.
在行走或使用楼梯时携带负载是日常生活中常见的活动。膝关节骨关节炎与行走过程中膝关节外收力矩（KAM）增加有关，因此了解楼梯和负重的额外挑战如何影响这些力矩是有价值的。16名健康受试者在三种载荷条件下（无载荷、前负重13.6 kg、背包负重13.6 kg）进行三种运动（行走、上楼梯、下楼梯）。三维步态分析用于测量KAM。方差分析结果显示，运动和负荷对峰值KAM的主效应显著（p < 0.001），但运动x负荷相互作用不显著（p = 0.250）。上楼梯时的KAM峰值约为下楼梯时的两倍（p < 0.001），且显著高于步行时的峰值（p < 0.001）。与无负载条件相比，负载条件产生显著更大的KAM（p < 0.001）。这些发现表明，在爬楼梯时携带中等大小的负荷显著增加了KAM峰值-与膝关节骨关节炎相关的风险因素。(C)2012爱思唯尔有限公司版权所有。
Carrying loads while walking or using stairs is a common activity of daily living. Knee osteoarthritis is associated with increased external knee adduction moment (KAM) during walking, so understanding how the additional challenges of stairs and carrying loads impact these moments is of value. Sixteen healthy individuals performed three types of MOTION (walking, stair ascent, stair descent) under three LOAD conditions (no load, carrying a 13.6 kg front load, carrying 13.6 kg load in a backpack). Three-dimensional gait analysis was used to measure KAM. Results of ANOVA showed a significant main effect of both MOTION and LOAD on peak KAM (p < 0.001), but no significant MOTION x LOAD interaction (p = 0.250). Peak KAM during stair ascent was about two-times those seen in stair descent (p < 0.001) and was significantly higher than those seen in walking (p < 0.001). Conditions with LOAD generated significantly greater KAM as compared to the no-LOAD conditions (p < 0.001). These findings suggest that carrying a load of moderate magnitude while climbing stairs significantly increases the peak KAM - a risk factor associated with knee osteoarthritis. (C) 2012 Elsevier B.V. All rights reserved.