Department of Orthopedic Surgery, Rush University Medical Center, 1611 W Harrison Street, Suite 201, Chicago, IL 60612, USA.
Department of Anatomy and Cell Biology, Rush University Medical Center, 600 S. Paulina St., Suite 507, Chicago, IL 60612, USA.
Sensors (Basel). 2022 Mar 11;22(6):2203. doi: 10.3390/s22062203.
Pressure-detecting insoles such as the Insole3 have potential as a portable alternative for assessing vertical ground reaction force (vGRF) outside of specialized laboratories. This study evaluated whether the Insole3 is a valid and reliable alternative to force plates for measuring vGRF. Eleven healthy participants walked overground at slow and moderately paced speeds and ran at a moderate pace while collecting vGRF simultaneously from a force plate (3000 Hz) and Insole3 (100 Hz). Intraclass correlation coefficients (ICC) demonstrated excellent vGRF agreement between systems during both walking speeds for Peak 1, Peak 2, the valley between peaks, and the vGRF impulse (ICC > 0.941). There was excellent agreement during running for the single vGRF peak (ICC = 0.942) and impulse (ICC = 0.940). The insoles slightly underestimated vGRF peaks (−3.7% to 0.9% bias) and valleys (−2.2% to −1.8% bias), and slightly overestimated impulses (4.2% to 5.6% bias). Reliability between visits for all three activities was excellent (ICC > 0.970). The Insole3 is a valid and reliable alternative to traditional force plates for assessing vGRF during walking and running in healthy adults. The excellent ICC values during slow walking suggests that the Insole3 may be particularly suitable for older adults in clinical and home settings.
压力感应鞋垫，如 Insole3，具有作为评估垂直地面反作用力（vGRF）的便携式替代方案的潜力，可在专门的实验室之外使用。本研究评估了 Insole3 是否可作为测量 vGRF 的测力板的有效且可靠的替代方案。11 名健康参与者在慢走和中速行走以及中速跑步时同时从测力板（3000Hz）和 Insole3（100Hz）收集 vGRF。内类相关系数（ICC）表明，在两种步行速度下，系统之间的 vGRF 峰值 1、峰值 2、峰值之间的谷值和 vGRF 冲量（ICC>0.941）具有极好的一致性。在跑步时，单个 vGRF 峰值（ICC=0.942）和冲量（ICC=0.940）具有极好的一致性。鞋垫略微低估了 vGRF 峰值（-3.7%至 0.9%偏差）和谷值（-2.2%至-1.8%偏差），并略微高估了冲量（4.2%至 5.6%偏差）。三种活动的两次访问之间的可靠性都非常好（ICC>0.970）。Insole3 是评估健康成年人行走和跑步时 vGRF 的传统测力板的有效且可靠的替代方案。在慢走时的优异 ICC 值表明，Insole3 可能特别适合临床和家庭环境中的老年人。
