Graduate Thesis Or Dissertation
 

The effect of surface type on plantar pressure distribution and running kinematics

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/r207ts895

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  • The purpose of this study was to examine pressure at five selected sites on the plantar surface of the foot and adaptations in running kinematics among fourteen male varsity collegiate distance runners on five different surfaces--asphalt, cinders, concrete, grass, and tartan. Pressure data were collected with an Electrodynogram system (EDG) and kinematic data were collected with a Redlake LOCAM 16mm high-speed camera operating at 100 fps. Repeated measures ANOVA was utilized to evaluate differences (p<0.10) among the variables. Pressure at the fifth metatarsal site on the left foot was found to be higher on the harder surfaces--asphalt, concrete, and tartan--than on the softer surfaces--grass and cinders. Higher pressures were found, in general, on the metatarsal region of the foot as opposed to the calcaneal region, especially while running on the harder surfaces. This finding may suggest that adequate shock absorption occurs in the calcaneal region of the shoe used in this study, and/or the metatarsal region of the foot-shoe interface may merit more attention than is commonly thought. This contention is substantiated by the research of Cavanagh & LaFortune (1980). Among the kinematic variables quantified--stride length, stride rate, single leg support time, and swing time--only stride rate varied with surfaces. Stride rate was found to be slightly, but significantly (p<0.10) slower on concrete and asphalt than on the softer surfaces. The differences observed may be representative of a tendency of runners to slow down on concrete and therefore attenuate as much force as possible. This contention is substantiated by the research of Feehery (1986) and Nigg (1985). The other three kinematic variables were relatively unaffected by differences in the running surfaces investigated. The results of this study indicate that the underlying mechanisms and adaptations to running on different surface types are extremely complex phenomena which merit further investigation before physical educators and coaches can be provided with firm guidelines for appropriate running surface(s) for students and athletes.
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file details KillgoreGarryL1989.pdf 2017-08-22 Público Descargar