title: Temporal characteristics of foot roll-over during barefoot jogging: reference data for young adults.
abstract: The purpose of this study was to establish a representative reference dataset for temporal characteristics of foot roll-over during barefoot jogging, based on plantar pressure data collected from 220 healthy young adults. The subjects ran at 3.3 ms-1 over a 16.5 m long running track, having a built-in pressure platform mounted on a force platform. The initial contact, final contact, time to peak pressure and the duration of contact at the lateral and medial heel, metatarsal heads I to V and the hallux were measured. Temporal plantar pressure variables were found to be reliable (93% of ICC coefficients above 0.75) and both gender and asymmetry influences could be neglected. Foot roll-over during jogging started with heel contact followed by a latero-medial contact of the metatarsals and finally the hallux. After heel off, the forefoot started to push off at the lateral metatarsals, followed by a more central push off over the second metatarsal and finally over the hallux. Based on the plantar pressure data, the stance phase during running was divided into four distinct phases: initial contact (8.2%), forefoot contact (11.3%), foot flat (25.3%) and forefoot push off (55.1%). These findings provide a reliable and representative reference dataset for temporal characteristics of foot roll-over during jogging of young adults that may also be relevant in the evaluation of running patterns.
authors.affiliation: Department of Movement and Sport Sciences, Faculty of Medicine and Health Sciences, University of Ghent, Watersportlaan 2, 9000 Ghent, Belgium. anneleen.decock@ugent.be
authors.forename: A
authors.initials: A
authors.lastname: De Cock
authors.forename: D
authors.initials: D
authors.lastname: De Clercq
authors.forename: T
authors.initials: T
authors.lastname: Willems
authors.forename: E
authors.initials: E
authors.lastname: Witvrouw
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D005260:Female; D005528:Foot / Q000502:physiology*; D006365:Heel / Q000502:physiology; D006801:Humans; D007590:Jogging / Q000502:physiology*; D008297:Male; D011312:Pressure