An explorative investigation of functional differences in plantar center of pressure of four foot types using sample entropy method.
In the study of biomechanics of different foot types, temporal or spatial parameters derived from plantar pressure are often used. However, there is no comparative study of complexity and regularity of the center of pressure (CoP) during the stance phase among pes valgus, pes cavus, hallux valgus an...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 55; no. 4; pp. 537 - 549 |
|---|---|
| Autores principales: | , , , , |
| Formato: | equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Springer Nature
Apr2017
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=121883624&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121883624 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Apr2017 vid: 55 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 121883624 121883624 NLM27311606 121883624 10.1007/s11517-016-1532-7 NLM27311606 121883624 ppf: 537 ppct: 12 formats: fmt: @attributes: type: P tig: atl: An explorative investigation of functional differences in plantar center of pressure of four foot types using sample entropy method. aug: au: Mei, Zhanyong Ivanov, Kamen Zhao, Guoru Li, Huihui Wang, Lei affil: College of Information Science and Technology , Chengdu University of Technology , Chengdu People's Republic of China sug: subj: Monitoring, Physiologic Methods Foot Physiology Hallux Valgus Physiopathology Middle Age Male Pressure Monitoring, Physiologic Equipment and Supplies Equipment Design Monitoring, Physiologic Statistics and Numerical Data Gait Flatfoot Physiopathology Physics Foot Physiopathology Kinematics Female Adult Human Middle Aged: 45-64 years Adult: 19-44 years Male Female ab: In the study of biomechanics of different foot types, temporal or spatial parameters derived from plantar pressure are often used. However, there is no comparative study of complexity and regularity of the center of pressure (CoP) during the stance phase among pes valgus, pes cavus, hallux valgus and normal foot. We aim to analyze whether CoP sample entropy characteristics differ among these four foot types. In our experiment participated 40 subjects with normal feet, 40 with pes cavus, 19 with pes valgus and 36 with hallux valgus. A Footscan® system was used to collect CoP data. We used sample entropy to quantify several parameters of the investigated four foot types. These are the displacement in medial-lateral (M/L) and anterior-posterior (A/P) directions, as well as the vertical ground reaction force of CoP during the stance phase. To fully examine the potential of the sample entropy method for quantification of CoP components, we provide results for two cases: calculating the sample entropy of normalized CoP components, as well as calculating it using the raw data of CoP components. We also explored what are the optimal values of parameters m (the matching length) and r (the tolerance range) when calculating the sample entropy of CoP data obtained during the stance phases. According to statistical results, some factors significantly influenced the sample entropy of CoP components. The sample entropies of non-normalized A/P values for the left foot, as well as for the right foot, were different between the normal foot and pes valgus, and between the normal foot and hallux valgus. The sample entropy of normalized M/L displacement of the right foot was different between the normal foot and pes cavus. The measured variable for A/P and M/L displacements could serve for the study of foot function. pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|