Relationship Between Foot Pressures and Alterations of Horizontal Velocities of the Center of Mass While Hurdling
by Cole, Braden, M.A., INDIANA STATE UNIVERSITY, 2011, 59 pages; 1498280

Abstract:

This study analyzed the landing phase of hurdle clearance to investigate how the vertical displacement in the hurdler's center of mass and foot pressures at ground contact lead to a change in the hurdler's overall horizontal velocity of the center of mass. This study examined four male collegiate high hurdlers as they performed three trials of clearing one 42 inch high hurdle. The subjects were filmed during the three trials using three Panasonic cameras (60 Hz) and one JVC video camera (60 Hz), which was later used to provide video images in order to digitize each frame using the APAS software. The subjects' foot pressure mapping data was also recorded at a sampling rate of 400 Hz during the three trials using the Tekscan high resolution (HR) Fscan hardware and software. The Tekscan HR Fscan hardware and software allowed for pressure measurements of the subjects' forefoot, heel, and total foot pressure measured in pounds per square inch. The data collected from the APAS software and the Tekscan software was then calculated using the statistical software package SPSS. Multiple Pearson product correlations were analyzed between the kinematic and kinetic variables with one of these correlations resulting in a moderate relationship. The correlation between the change in the center of mass horizontal velocity and the heel pressure psi during the landing phase resulted in a moderate relationship with a correlation coefficient of r = .612, p= .034. The relationship between these two variables indicates that when a hurdler heel taps during the transitioning from flight phase to landing phase there is a decrease in their horizontal velocity.

 
AdviserAlfred Finch
SchoolINDIANA STATE UNIVERSITY
SourceMAI/ 50-01, p. , Sep 2011
Source TypeThesis
SubjectsKinesiology; Biomechanics
Publication Number1498280
Adobe PDF Access the complete dissertation:
 

» Find an electronic copy at your library.
  Use the link below to access a full citation record of this graduate work:
  http://gateway.proquest.com/openurl%3furl_ver=Z39.88-2004%26res_dat=xri:pqdiss%26rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation%26rft_dat=xri:pqdiss:1498280
  If your library subscribes to the ProQuest Dissertations & Theses (PQDT) database, you may be entitled to a free electronic version of this graduate work. If not, you will have the option to purchase one, and access a 24 page preview for free (if available).

About ProQuest Dissertations & Theses
With over 2.3 million records, the ProQuest Dissertations & Theses (PQDT) database is the most comprehensive collection of dissertations and theses in the world. It is the database of record for graduate research.

The database includes citations of graduate works ranging from the first U.S. dissertation, accepted in 1861, to those accepted as recently as last semester. Of the 2.3 million graduate works included in the database, ProQuest offers more than 1.9 million in full text formats. Of those, over 860,000 are available in PDF format. More than 60,000 dissertations and theses are added to the database each year.

If you have questions, please feel free to visit the ProQuest Web site - http://www.proquest.com - or call ProQuest Hotline Customer Support at 1-800-521-3042.