Leyh Clara, Feipel Véronique
Laboratory of Functional Anatomy (LAF), Université Libre de Bruxelles, 1070 Brussels, Belgium.
Laboratory of Anatomy, Biomechanics and Organogenesis (LABO), Université Libre de Bruxelles, 1070 Brussels, Belgium.
J Funct Morphol Kinesiol. 2022 Nov 28;7(4):106. doi: 10.3390/jfmk7040106.
In-shoe systems and pressure plates are used to assess plantar pressure during gait, but additional tools are employed to evaluate other gait parameters. The GAITRite® system is a clinical gait evaluation tool. Extensive literature is available for spatiotemporal parameters, but it is scarce for relative plantar pressure data. Therefore, we investigated whether, when controlling for age, the GAITRite® system is able to distinguish the effects of walking velocity on plantar pressure parameters in six plantar regions in a large sample of adults. Participants (83 women and 87 men, aged 18−85 years) walked at three self-selected velocities (slow, preferred, fast) on a 6-m long GAITRite® walkway. Relative peak pressure, pressure-time integral, peak time and contact area were computed for six zones (lateral and medial heel, mid- and forefoot). The impact of age (covariate), sex, side, velocity, pressure zone and their interactions on pressure variables was evaluated. Velocity affected peak pressure, pressure-time integral, peak time and contact area (p < 0.001). With increasing self-selected gait velocity, medial forefoot peak pressure and pressure-time integral increased (p < 0.001), while heel and lateral forefoot regions displayed a nonlinear plantar pressure evolution. These results suggest lower (heel strike) or more equally distributed (push-off) loads at preferred gait velocity.
鞋内系统和压力板用于评估步态期间的足底压力，但还使用了其他工具来评估其他步态参数。GAITRite®系统是一种临床步态评估工具。关于时空参数有大量文献，但关于相对足底压力数据的文献却很少。因此，我们研究了在控制年龄的情况下，GAITRite®系统是否能够在大量成年人样本中区分步行速度对六个足底区域的足底压力参数的影响。参与者（83名女性和87名男性，年龄在18 - 85岁之间）在一条6米长的GAITRite®步道上以三种自我选择的速度（慢、偏好、快）行走。计算了六个区域（外侧和内侧足跟、中足和前足）的相对峰值压力、压力-时间积分、峰值时间和接触面积。评估了年龄（协变量）、性别、侧别、速度、压力区域及其相互作用对压力变量的影响。速度影响峰值压力、压力-时间积分、峰值时间和接触面积（p < 0.001）。随着自我选择的步态速度增加，前足内侧的峰值压力和压力-时间积分增加（p < 0.001），而足跟和前足外侧区域显示出非线性的足底压力变化。这些结果表明，在偏好的步态速度下，负荷较低（足跟触地时）或分布更均匀（蹬离时）。
