Author | dc.contributor.author | Grossi, Bruno | |
Author | dc.contributor.author | Canals Lambarri, Mauricio | es_CL |
Admission date | dc.date.accessioned | 2011-09-29T13:49:00Z | |
Available date | dc.date.available | 2011-09-29T13:49:00Z | |
Publication date | dc.date.issued | 2010-03-08 | |
Cita de ítem | dc.identifier.citation | JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL GENETICS AND PHYSIOLOGY, Volume: 313A, Issue: 5, Pages: 292-300, 2010 | es_CL |
Identifier | dc.identifier.issn | 1932-5223 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/119303 | |
General note | dc.description | Artículo de publicación ISI | es_CL |
Abstract | dc.description.abstract | We analyzed the morphology and the walk–trot and trot–gallop transition velocities of nine
juvenile horses and compared them with their mothers. We also compared the relative stride
length and the duty factor of the juveniles with respect to adults at three equivalent trotting
speeds (Froude numbers 0.5, 0.75, and 1.0), to determine dynamic similarity. Juveniles had a
negative allometry in their leg bones, mainly because of little size changes of the distal portions.
The negative allometry of extremities allows juveniles to increase stride length without increasing
step frequency, which can be biomechanically advantageous. The Froude number during the
walk–trot velocity transition of juveniles was similar to that of adult horses, but walk–trot
transition velocity in juveniles was greater than expected for their mass. However, during the
change trot–gallop, the trot–gallop velocity transition was conserved, but the Froude number was
lower. Thus, juvenile horses did not move in a manner that was dynamically similar to the adult
horses. At low speed (walk–trot), the gait approaches the behavior predicted by the inverted
pendulum model, but at high speed (trot–gallop) dominates the inertial forces. The trot–gallop gait
change would be conducted at speeds that would minimize energy costs of transport owing to
collisions and changes in the trajectory of the center of mass. | es_CL |
Lenguage | dc.language.iso | en | es_CL |
Publisher | dc.publisher | WILEY-LISS, DIV JOHN WILEY & SONS INC | es_CL |
Keywords | dc.subject | DYNAMICALLY SIMILAR LOCOMOTION | es_CL |
Título | dc.title | Comparison of the Morphology of the Limbs of Juvenile and Adult Horses (Equus caballus) and Their Implications on the Locomotor Biomechanics | es_CL |
Document type | dc.type | Artículo de revista | |