경마 | Cases & Studies in Horse Racing | 赛马
- date : 2015-05-20 01:10|hit : 2602
-
- Article] The effects of varying cushion depth on dynamic loading in shallow sand thoroughbred horse dirt racetracks
-
DocNo of ILP: 842
Doc. Type: Article
Title: The effects of varying cushion depth on dynamic loading in shallow sand thoroughbred horse dirt racetracks
Authors: Mahaffey, CA; Peterson, ML; Roepstorff, L
Full Name of Authors: Mahaffey, Christie A.; Peterson, Michael L.; Roepstorff, Lars
Keywords by Author:
Keywords Plus: TRACK; SURFACES
Abstract: Surface consistency is an important factor for the safety of thoroughbred racing surfaces. Factors that influence the consistency in dirt tracks include homogeneity of surface material composition, moisture content, and cushion depth. The influence of cushion depth on the dynamic load and accelerations experienced by the horse at a range of moisture levels typical to operating conditions (14%, 16%, and 18% gravimetric for the material tested in this work), and surface maintenance conditions (sealed and harrowed), is addressed. A biomechanical surface tester, designed to simulate the forelimb impact of a galloping thoroughbred horse, was repeatedly dropped on five different surface conditions, each at two cushion depths (100 mm and 150 mm). The difference of 50 mm, a depth range often found within a single track had a statistically significant effect on the peak load and the secondary phase loading rate experienced by a horse, particularly under the outlying moisture content conditions (relatively dry or moisture saturated). The tested material behaved more similarly at the two cushion depths under moisture conditions at which maximum dry density occurred (16%). Peak loads and loading rates were significantly different between the two depths for harrowed, 14% moisture conditions, and sealed, 18% moisture conditions. These cushion depths and surface material moisture levels are within normal operating conditions for thoroughbred race meetings on shallow sand tracks and therefore may influence the development of musculoskeletal disease and the safety of horses and jockeys. (C) 2012 IAgrE. Published by Elsevier Ltd. All rights reserved.
Cate of OECD: Other agricultural sciences
Year of Publication: 2013
Business Area: other
Detail Business: medicine & science
Country: USA
Study Area:
Name of Journal: BIOSYSTEMS ENGINEERING
Language: English
Country of Authors: [Mahaffey, Christie A.; Peterson, Michael L.] Univ Maine, Orono, ME 04473 USA; [Mahaffey, Christie A.; Peterson, Michael L.] Racing Surfaces Testing Lab, Orono, ME 04473 USA; [Roepstorff, Lars] Swedish Univ Agr Sci, S-75005 Uppsala, Sweden
Press Adress: Mahaffey, CA (reprint author), Univ Maine, 5711 Boardman Hall, Orono, ME 04473 USA.
Email Address: Christie.Mahaffey@gmail.com; Michael.Peterson@maine.edu; Lars.Roepstorff@slu.se
Citaion:
Funding: Grayson-Jockey Club Research Foundation; Racing Surfaces Testing Laboratory; Churchill Downs Incorporated Safety from Start to Finish Initiative
Lists of Citation: ASTM, 2004, D4767 ASTM INT; ASTM, 2007, D422 ASTM INT; ASTM, 2005, D2216 ASTM INT; Barrett R S, 1998, J Sci Med Sport, V1, P1, DOI 10.1016/S1440-2440(98)80003-0; Bridge J. W., 2010, J ASTM INT, V7, P1; Burn J. F., 2005, Equine and Comparative Exercise Physiology, V2, P37, DOI 10.1079/ECP200542; Ehrlich PJ, 2002, OSTEOPOROSIS INT, V13, P688, DOI 10.1007/s001980200095; Ferris DP, 1997, J APPL PHYSIOL, V82, P15; Johnston C, 2006, EQUINE VET J, V38, P634, DOI 10.2746/042516406X158341; Kai M., 1999, EQUINE VET J S, V31, P214; Kerdok AE, 2002, J APPL PHYSIOL, V92, P469; Mahaffey C. A., 2012, SPORTS ENG; MCMAHON TA, 1979, J BIOMECH, V12, P893, DOI 10.1016/0021-9290(79)90057-5; Peterson M. M., 2010, P 2010 AM COLL VET S; Peterson M. M., 2011, RACING SURFACES WHIT; Peterson ML, 2008, EQUINE VET J, V40, P602, DOI 10.2746/042516408X330347; Peterson ML, 2008, BIOSYST ENG, V101, P260, DOI 10.1016/j.biosystemseng.2008.07.007; Pratt GW, 1985, EQUINE VET DATA, V6, P193; Reiser II R. F., 2000, SPORTS ENG, V3, P1, DOI 10.1046/j.1460-2687.2000.00049.x; Setterbo J. J., 2011, SPORTS ENG, V14, P119; Soehne W., 1958, AGR ENG, V276-281, P290; Thomason JJ, 2008, VET CLIN N AM-EQUINE, V24, P53, DOI 10.1016/j.cveq.2007.11.007; Torcasio A, 2008, EUR CELLS MATER, V16, P56; Wilson AM, 2001, NATURE, V414, P895, DOI 10.1038/414895a
Number of Citaion: 24
Publication: ACADEMIC PRESS INC ELSEVIER SCIENCE
City of Publication: SAN DIEGO
Address of Publication: 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
ISSN: 1537-5110
29-Character Source Abbreviation: BIOSYST ENG
ISO Source Abbreviation: Biosyst. Eng.
Volume: 114
Version: 2
Start of File: 178
End of File: 186
DOI: 10.1016/j.biosystemseng.2012.12.004
Number of Pages: 9
Web of Science Category: Agricultural Engineering; Agriculture, Multidisciplinary
Subject Category: Agriculture
Document Delivery Number: 090UA
Unique Article Identifier: WOS:000315004300011
[이 게시물은 HyeJung Mo…님에 의해 2015-05-20 14:41:34 GAMBLING에서 이동 됨]
- reply : 0
-
- list
-
- prev
- next