Menz Hylton B, Lord Stephen R, Fitzpatrick Richard C
Prince of Wales Medical Research Institute, University of New South Wales, High St, Randwick, Sydney NSW 2031, Australia.
Gait Posture. 2003 Aug;18(1):35-46. doi: 10.1016/s0966-6362(02)00159-5.
The aim of this study was to evaluate acceleration patterns at the head and pelvis while subjects walked on a level and an irregular walking surface, to develop an understanding of how the postural control system responds to challenging walking conditions. Thirty young, healthy subjects walked on a level corridor and on artificial grass underlain with foam and wooden blocks placed in an arbitrary manner. Temporo-spatial gait parameters and acceleration patterns at the head and pelvis were measured. The results revealed that when walking on the irregular surface, subjects were able to maintain their velocity, but adopted a slower and more variable cadence and a significantly longer stride length. The magnitude of pelvis accelerations increased, however head accelerations were not affected by the walking surface. When considered as an overall pattern of movement, these findings suggest that one of the primary objectives of the postural control system when walking on irregular surfaces is head control, and that subjects adapt their stepping pattern on irregular surfaces to ensure that the head remains stable.
本研究的目的是评估受试者在水平和不规则行走表面行走时头部和骨盆的加速度模式，以了解姿势控制系统如何应对具有挑战性的行走条件。30名年轻健康的受试者在水平走廊以及铺有泡沫且随意放置木块的人工草地上行走。测量了颞下颌关节空间步态参数以及头部和骨盆的加速度模式。结果显示，在不规则表面行走时，受试者能够保持速度，但步频较慢且变化更大，步幅明显更长。骨盆加速度的幅度增加，然而头部加速度不受行走表面的影响。从整体运动模式来看，这些发现表明，在不规则表面行走时，姿势控制系统的主要目标之一是控制头部，并且受试者会在不规则表面调整其步幅模式以确保头部保持稳定。
