scholarly journals Kinematic Analysis of Horse-Riding Posture According to Skill Levels during Rising Trot with JeJu-horse

2009 ◽  
Vol 19 (3) ◽  
pp. 467-479 ◽  
2009 ◽  
Vol 38 ◽  
pp. 741-754
Author(s):  
Woon Yong Oh ◽  
Che Cheong Ryew ◽  
Jin Hyun Kim ◽  
Seung Hyun Hyun

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2405
Author(s):  
Francisco Miró ◽  
Patricia López ◽  
Jose Manuel Vilar ◽  
Alfonso M. Galisteo ◽  
Joaquín Vivo ◽  
...  

Although the jumping characteristics of agility dogs have been examined in recent years, there is currently a lack of data related to the suspension phase. The purpose of the present study was to investigate the biomechanics of the suspension phase of the agility jump and to analyze the kinematic differences in dogs with different jumping abilities. Two groups of dogs of the same height category (large dogs) competing at different skill levels and assessed as excellent jumpers (n = 4) and less-skilled jumpers (n = 3), respectively, were analyzed and statistically compared. Excellent jumpers showed longer and faster jumps with flatter jump trajectories than less-skilled jumpers. In less-skilled jumpers, the distance in front of the hurdle was notably greater than the distance behind it, while the difference between these two distances was less in excellent jumpers. Length and duration of the jump, maximal height of the jumping trajectory, take-off and landing distances to the hurdle, time of occurrence of maximal jump height, and time of change in back orientation essentially defines the suspension phase of the agility jump. This study presents preliminary evidence that the kinematic characteristics of hurdle clearance are different in excellent jumper dogs and in less-skilled jumper dogs.


2005 ◽  
Author(s):  
Jane Myers

Horse riding is widely enjoyed as a professional sport or a hobby by riders of all ages. It is also acknowledged as being potentially dangerous, yet many of these dangers can be avoided and the severity of accidents drastically reduced if safe practices and risk management are employed. Horse Safe covers safety around horses in detail and aims to raise awareness of what can happen. Beginning with an explanation of horses’ natural behavioural characteristics, such as herd behaviour, intelligence and body language, the author then presents the more human aspects of horse safety – safety equipment and how it should be maintained, the working environment, systems for safe horse management, safe riding, training for safe horses, and transporting horses safely. The book concludes with a chapter on how to reduce the risks when buying a horse and how to avoid potential pitfalls. Written by Jane Myers, a leading expert, and endorsed by the Association for Horsemanship, Safety and Education (AHSE), Horse Safe is highly practical and is invaluable for riders of all disciplines and skill levels.


2010 ◽  
Vol 29 (6) ◽  
pp. 956-963 ◽  
Author(s):  
Ok-Deuk Kang ◽  
Youn-Chul Ryu ◽  
Che-Cheong Ryew ◽  
Woon-Yong Oh ◽  
Chong-Eon Lee ◽  
...  

Author(s):  
L. -M. Peng ◽  
M. J. Whelan

In recent years there has been a trend in the structure determination of reconstructed surfaces to use high energy electron diffraction techniques, and to employ a kinematic approximation in analyzing the intensities of surface superlattice reflections. Experimentally this is motivated by the great success of the determination of the dimer adatom stacking fault (DAS) structure of the Si(111) 7 × 7 reconstructed surface.While in the case of transmission electron diffraction (TED) the validity of the kinematic approximation has been examined by using multislice calculations for Si and certain incident beam directions, far less has been done in the reflection high energy electron diffraction (RHEED) case. In this paper we aim to provide a thorough Bloch wave analysis of the various diffraction processes involved, and to set criteria on the validity for the kinematic analysis of the intensities of the surface superlattice reflections.The validity of the kinematic analysis, being common to both the TED and RHEED case, relies primarily on two underlying observations, namely (l)the surface superlattice scattering in the selvedge is kinematically dominating, and (2)the superlattice diffracted beams are uncoupled from the fundamental diffracted beams within the bulk.


2008 ◽  
Author(s):  
Connie E. Myerson ◽  
Eniko K. Toth ◽  
Joseph M. Wasserman ◽  
W.D. Dietrich ◽  
Edward J. Green

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