Human Movement and Rehabilitation Research, University of Salford, PO41 Brian Blatchford Building, Frederick Road Campus, Salford, M66PU, UK.
School of Health Sciences, University of Brighton, 204 Aldro Building, 49 Darley Road, Eastbourne, BN20 7UR, UK.
Sci Rep. 2023 May 16;13(1):7941. doi: 10.1038/s41598-023-34568-z.
Plantar pressure has been used to understand loading on infant feet as gait develops. Previous literature focused on straight walking, despite turning accounting for 25% of infant self-directed steps. We aimed to compare centre of pressure and plantar pressure in walking steps in different directions in infants. Twenty-five infants who were walking confidently participated in the study (aged 449 ± 71 days, 96 ± 25 days after first steps). Plantar pressure and video were recorded whilst five steps per infant were combined for three step types: straight, turning inwards and outwards. Centre of pressure trajectory components were compared for path length and velocity. Pedobarographic Statistical Parametric Mapping explored differences in peak plantar pressure for the three step types. Significant differences were identified primarily in the forefoot with higher peak pressures in straight steps. Centre of pressure path was longer in the medial-lateral direction during turning (outward 4.6 ± 2.3, inward 6.8 ± 6.1, straight 3.5 ± 1.2 cm, p < .001). Anterior-posterior velocity was higher in straight steps and medial-lateral velocity highest turning inwards. Centre of pressure and plantar pressures differ between straight and turning steps with greatest differences between straight and turning. Findings may be attributed to walking speed or a function of turning experience and should influence future protocols.
足底压力已被用于了解婴儿步态发育时脚部的受力情况。尽管转向占婴儿自主行走步数的 25%，但之前的文献主要集中在直走方面。我们旨在比较婴儿向不同方向行走时的中心压力和足底压力。25 名自信行走的婴儿参与了研究（年龄为 449±71 天，首次行走后 96±25 天）。在记录视频的同时，对每个婴儿的五个步骤进行了组合，以获得三种步型：直走、内转和外转。比较了中心压力轨迹分量的路径长度和速度。足底压力统计参数图探索了三种步型的峰值足底压力差异。主要在前脚发现了显著差异，直走时的峰值压力更高。转弯时，中心压力轨迹在横向（4.6±2.3cm）比直走（3.5±1.2cm）更长（p<.001）。直走时前后速度较高，内转时横向速度最高。直走和转弯步的中心压力和足底压力不同，直走和转弯的差异最大。研究结果可能归因于行走速度或转弯经验的功能，应影响未来的方案。
