| Title |
|
|
|
The mechanical characteristics of the human heel pad during foot strike in running : an in vivo cineradiographic study
|
|
| Author |
|
|
|
|
|
| Abstract |
|
|
|
| The compressive properties of the heel pad during the heel strike when running (barefoot and shed, two subjects, 4.5 m s(-1)) were studied by means of a high-speed two-dimensional cineradiographic registration (150 frames s(-1)) of an actual running step. Vertical ground reaction forces were measured with a force platform. In barefoot running the heel pad deforms to a maximal percentage deformation of 60.5 +/- 5.5%. In shed running the heel pad deforms only 35.5 +/- 2.5% and the nonlinear force-deformation relationship reflects an increasing stiffness when deformation rises. Although the amplitudes of the vertical ground reaction forces do not differ notably in both conditions, barefoot running implies a maximal deformation to the fatty heel tissue, reducing its functional role from shock reduction towards local protection of the heel bone. It is argued that embedding the foot in a well-fitting shoe increases the effective stiffness of the heel pad. |
|
|
| Language |
|
|
|
English
|
|
| Source (journal) |
|
|
|
Journal of biomechanics. - New York, N.Y. |
|
| Publication |
|
|
|
New York, N.Y. : 1994
|
|
| ISSN |
|
|
|
0021-9290
|
|
| Volume/pages |
|
|
|
27:10(1994), p. 1213-1222
|
|
| ISI |
|
|
|
A1994PD27800002
|
|
| Full text (Publisher's DOI) |
|
|
| |
|
| Full text (publisher's version - intranet only) |
|
|
| |
|