Mentiplay Benjamin F, Banky Megan, Clark Ross A, Kahn Michelle B, Williams Gavin
Department of Physiotherapy, Epworth HealthCare, Australia; La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Australia; Victorian Infant Brain Studies, Murdoch Children's Research Institute, Australia.
Department of Physiotherapy, Epworth HealthCare, Australia; School of Health and Sport Sciences, University of the Sunshine Coast, Australia.
Gait Posture. 2018 Sep;65:190-196. doi: 10.1016/j.gaitpost.2018.06.162. Epub 2018 Jun 25.
Although it is well established that lower limb joint angles adapt to walking at various speeds, limited research has examined the modifications in joint angular velocity. There is currently no normative dataset for joint angular velocity during walking, which would be useful to allow comparisons for patient cohorts. Additionally, understanding normal joint angular velocity may assist clinical assessment and treatment procedures to incorporate methods that replicate the movement speed of the lower limb joints during walking.
This study aimed to examine lower limb joint angles and angular velocities in a healthy population walking at various gait speeds.
Thirty-six healthy adult participants underwent three-dimensional gait analysis while walking at various speeds during habitual and slowed walking. The peak joint angles and angular velocities during important phases of the gait cycle were examined for the hip, knee and ankle in the sagittal plane. Data were grouped in 0.2 m/s increments from a walking speed of 0.4 m/s to 1.6 m/s to represent the range of walking speeds reported in studies of people with gait impairments.
For joint angles and angular velocities, the shape of the gait traces were consistent regardless of the walking speed. However as walking speed increased, so did the peak joint angles and angular velocities for the hip, knee and ankle. The largest angular velocity occurred when the knee joint extended at the terminal swing phase of gait. For the ankle and hip joints, the largest angular velocity occurred during the push-off phase.
This study examined how lower limb joint angular velocities change with various walking speeds. These data can be used as a comparator for data from clinical cohorts, and has the potential to be used to match clinical assessment and treatment methods to joint angular velocity during walking.
尽管已经充分证实下肢关节角度会适应不同速度的行走，但对关节角速度变化的研究却很有限。目前尚无关于行走过程中关节角速度的标准数据集，而这对于比较患者群体的数据会很有帮助。此外，了解正常的关节角速度可能有助于临床评估和治疗程序采用能够模拟行走过程中下肢关节运动速度的方法。
本研究旨在考察健康人群在不同步态速度下行走时的下肢关节角度和角速度。
36名健康成年参与者在习惯行走和慢速行走过程中以不同速度行走时接受了三维步态分析。在矢状面中检查了步态周期重要阶段髋、膝和踝关节的峰值关节角度和角速度。数据以0.2m/s的增量进行分组，行走速度范围从0.4m/s到1.6m/s，以代表步态障碍患者研究中所报告的行走速度范围。
对于关节角度和角速度，无论行走速度如何，步态轨迹的形状都是一致的。然而，随着行走速度的增加，髋、膝和踝关节的峰值关节角度和角速度也随之增加。最大角速度出现在步态末期摆动阶段膝关节伸展时。对于踝关节和髋关节，最大角速度出现在蹬离阶段。
本研究考察了下肢关节角速度如何随不同行走速度变化。这些数据可作为临床队列数据的比较标准，并有可能用于使临床评估和治疗方法与行走过程中的关节角速度相匹配。
