In vivo examination of the dynamic properties of the human heel pad
Deutscher übersetzter Titel: | In vivo-Untersuchung der dynamischen Eigenschaften des Fersenpolsters beim Menschen |
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Autor: | Kinoshita, H.; Ogawa, T.; Kuzuhara, K.; Ikuta, K. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 14 (1993), 6, S. 312-319, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-1021184 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199311068140 |
Quelle: | BISp |
Abstract
The shock-absorbing characteristics of the heel pad in vivo were examined in adults (N=16) and 7-year-old children (N=5) using a drop-impact tester (wt=5 kg). Impact velocities were 0.72 m/s and 0.93 m/s. It was found that in adults the average peak deceleration was 11.6 G at an impact velocity of 0.93 m/s. The maximum deformation of the heel pad was 11.3 mm, and the computed energy absorption during impact amounted to 70 (range = 75-89). These mechanical characteristics remained nearly the same even after 6 min of repeated impacts by the impact tester and even a 10 km run. The children had larger values of peak deceleration and maximum deformation and smaller energy loss than the adults. It was concluded that the heel pad was a fairly effective shock attenuator and high energy absorber, and that these characteristics remain nearly unchanged even after a relatively long period of repeated impacts. It was also concluded that the mechanical properties of the childrens heel pads were different from those of the adults. Verf.-Referat