Abstract/Details

Influence of a custom foot orthotic intervention on lower extremity dynamics and intra-limb coupling during running


2007 2007

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Abstract (summary)

The purpose of this series of investigations was to determine how custom foot orthotic intervention influences the lower extremity dynamics and intra-limb coordination in healthy and injured female runners.

For the first investigation, dynamic data were collected from 12 healthy female runners (Control group) and 12 female runners with a recent history of overuse knee running injury (Treatment group). Results revealed that the influence of CFO intervention on lower extremity appears to occur with short-term intervention. The intervention produced a similar response in both groups. The knee kinematics were not influenced by the intervention however there were changes observed in knee kinetics.

For the second investigation, dynamic data were collected during overground running trials in Treatment group from Study One who had completed 6 weeks of orthotic therapy. Data were collected with the subjects running with (CFO condition) and without (Shod condition) foot orthoses in three running shoes with varying midsole composition. Results revealed that the only kinematic variable influenced by running shoe midsole durometer was maximum rearfoot eversion velocity. However, CFO intervention in the footwear led to significant decreases in rearfoot kinematic variables, tibial internal rotation and internal ankle inversion moments. In addition, it was revealed that when a CFO intervention is added to a shoe of lesser density, the dynamics exhibited by the runner are similar to when wearing a shoe of greater density.

For the third investigation, kinematic data were collected from 9 healthy female runners (Control group) and 9 female runners with a recent history of overuse knee running injury (Treatment group). Both groups performed a 30-minute treadmill run and relative motion plots were created for the intra-limb couplings. Results revealed that CFO intervention helped to maintain variability during the early stance phase throughout the course of the run in the injured runners. In the Treatment group, the TibTP/CalFP and KnTP/RFFP coordination variability during the early stance phase significantly decreased throughout the course of the 30-minute run for the Shod condition. While wearing the CFO condition the variability went unchanged and better resembled patterns exhibited by the Control group.

Indexing (details)


Subject
Rehabilitation;
Therapy;
Sports medicine
Classification
0382: Rehabilitation
0382: Therapy
0575: Sports medicine
Identifier / keyword
Health and environmental sciences, Foot orthotic, Lower extremity, Running
Title
Influence of a custom foot orthotic intervention on lower extremity dynamics and intra-limb coupling during running
Author
MacLean, Christopher Lawrence
Number of pages
160
Publication year
2007
Degree date
2007
School code
0118
Source
DAI-B 68/07, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549170617
Advisor
Hamill, Joseph
University/institution
University of Massachusetts Amherst
Department
Sport Studies
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3275752
ProQuest document ID
304848029
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304848029
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