Plantar loading during jumping while wearing a rigid carbon graphite footplate

Published

Journal Article

Fifth metatarsal stress fractures are common in sports and often result in delayed and non-union. The purpose of this study was to examine the effect of a rigid carbon graphite footplate (CGF) on plantar loading during take-off and landing from a jump. Nineteen recreational male athletes with no history of lower extremity injury in the past 6 months and no foot or ankle surgery in the past 3 years participated in this study. Subjects completed 7 jumping tasks while wearing a standard running shoe and then the shoe plus the CGF while plantar loading data was recorded. A series of paired t-tests were used to examine differences between the two footwear conditions independently for both takeoff and landing (α=0.05). The contact area in the medial midfoot (p<.001) and forefoot (p=.010) statistically decreased when wearing the CGFP. The force-time integral was significantly greater when wearing the CGFP in the middle (p<.001) and lateral forefoot (p=.019). Maximum force was significantly greater beneath the middle (p<.001) and lateral forefoot (p<.001) when wearing the CGFP, while it was decreased beneath the medial midfoot (p<.001). During landing, the contact area beneath the medial (p=.017) and lateral midfoot (p=.004) were significantly decreased when wearing the CGFP. The force-time integral was significantly decrease beneath the medial midfoot (p<.001) when wearing the CGFP. The maximum force was significantly greater beneath the medial (p=.047) and middle forefoot (p=.001) when the subject was wearing the CGFP. The maximum force beneath the medial midfoot (p<.001) was significantly reduced when wearing the carbon graphite footplate. The results of the study indicate that the CGF is ineffective at reducing plantar loading during jumping and landing. © 2013 Elsevier B.V.

Full Text

Duke Authors

Cited Authors

  • Queen, RM; Verma, R; Abbey, AN; Nunley, JA; Butler, RJ

Published Date

  • February 1, 2014

Published In

Volume / Issue

  • 39 / 2

Start / End Page

  • 707 - 711

Electronic International Standard Serial Number (EISSN)

  • 1879-2219

International Standard Serial Number (ISSN)

  • 0966-6362

Digital Object Identifier (DOI)

  • 10.1016/j.gaitpost.2013.10.002

Citation Source

  • Scopus