Study on foot-type classification for young adults based on static and dynamic plantar pressure distribution

Abstract

The application of an effective and reliable foot type classification method is very important for foot type judgment, injury risk assessment, and correction. Therefore, this paper mainly aims to propose a new foot type classification method for young people based on bitmap index (BI), compare it with the traditional footprint classification method, and put forward and analyze the factors affecting foot type classification. Thirty-one healthy volunteers were asked to perform two types tests in order to study the plantar pressure distribution with static and dynamic conditions, the first type is footprint test with full load of static, and the other type is plantar pressure distribution, which contains four different tests: no load, half load, and full load of static state, as well as dynamic plantar pressure distribution during process of walking. The Intraclass Correlation Coefficient results (ICC) were good reliable and reproducible for BI value with dynamic test (DT-BI value 0.738, 95% confidence interval [0.535, 0.848], [Formula: see text]) and full-load (FL-BI value 0.725 [0.281, 0.814], [Formula: see text], p < 0.001), obtained with individual measures and a two-way mixed-effects model. It can be seen from Kappa coefficient and density map that DT-BI has high classification accuracy. Classification of foot type based on bitmap index values showed good reliability in people with varying BMI, which can help clinicians and researchers segment the sample population to better distinguish between different foot types of activity, gait or treatment effects.

A Wearable Lower Limb Exoskeleton: Reducing the Energy Cost of Human Movement

“…Wearing an exoskeleton may lead to changes in these gait parameters. The variation characteristics of plantar contact pressure [25] can be described as initial contact phase (ICP), rear foot contact phase (RFCP), mid foot contact phase (MFCP), fore foot contact phase (FFCP), and total foot contact phase (TFCP). The gait data on human lower limb walking movement are obtained using a Vicon motion capture system and an AMTI force measuring platform (Figure 1a).…”

Using a spherical inverted pendulum and statokinesigram for modeling and evaluating quiet standing posture

“…The force pressure platform is an alternative device for obtaining this trajectory since it depends on the plantar pressure distributions of both feet and then estimates the precise location of body CoP. [20][21][22] We used a plantar pressure mapping platform to acquire the body CoP in both A/P and M/L directions.…”