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The effects of training aids on the longissimus dorsi in the equine back

Published online by Cambridge University Press:  01 November 2008

Suzanne Cottriall
Affiliation:
Structure and Motion Laboratory, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, HertfordshireAL9 7TA, UK
Pattama Ritruechai
Affiliation:
Structure and Motion Laboratory, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, HertfordshireAL9 7TA, UK
James M Wakeling*
Affiliation:
Structure and Motion Laboratory, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, HertfordshireAL9 7TA, UK Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
*
*Corresponding author: wakeling@sfu.ca
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Abstract

This study aimed to determine whether training aids (side reins and a Pessoa) increased the use of the longissimus dorsi when horses are being lunged. Horses were lunged on a circle under four different conditions on the left and right reins in walk and trot, and electromyographic (EMG) and speed measurements were taken using surface EMG at T16 and GPS, respectively. The EMG intensity was substantially greater for the longissimus dorsi on the inside of the circle. Differences occurred in both the timing and the intensity of the EMG between the conditions. At walk, the EMG intensity was the greatest for the control condition and at trot the EMG intensity was the greatest for the control and Pessoa control conditions. It is concluded that the training aids of side reins and a Pessoa do not increase the use of the longissimus dorsi to stabilise the back.

Type
Short Communication
Copyright
Copyright © Cambridge University Press 2009

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References

1Jeffcott, L (1980). Disorders of the thoracolumber spine of the horse – a survey of 443 cases. Equine Veterinary Journal 12(4): 197210.Google Scholar
2Rooney, J (1982). The horse's back: biomechanics of lameness. Equine Practice 4(2): 1727.Google Scholar
3Strasser, H (1913). Textbook of muscle and joint mechanicsLehrbuch der muskel- und gelenk-mechanik. (cited by Slipjer, 1946 in Comparative biologic-anatomical investigation on the vertebral column and spinal musculature of mammals. Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen (Tweed Sectie) (47): 1–128)Berlin: Springer.Google Scholar
4Roepstorff, L, Johnston, C, Drevemo, S and Gustas, P (2002). Influence of draw reins on ground reaction forces at the trot. Equine Veterinary Journal Supplement 34: 349352.Google Scholar
5Anon, (2003). Rules for dressage Federation Equestre Internationale (FEI), Avenue Mon Repos 24, PO Box 157, 1000 Lausanne 5, Switzerland.Google Scholar
6Wakeling, J, Barnett, K, Price, S and Nankervis, K (2006). Effects of manipulative therapy on the longissimus dorsi in the equine back. Equine and Comparative Exercise Physiology 10: 18.Google Scholar
7Robert, C, Valette, JP, Pourcelot, P, Audigie, F and Denoix, JM (2002). Effects of trotting speed on muscle activity and kinematics in saddlehorses. Equine Veterinary Journal Supplement 34: 295301.Google Scholar
8Wootton, M, Kadaba, M and Cochran, G (1990). Dynamic electromyography. II. Normal patterns during gait. Journal of Orthopaedic Research 8(2): 259265.Google Scholar
9Holmstrom, M, Fredricson, I and Drevemo, S (1995). Biokinematic effects of collection on the trotting gaits in the elite dressage horse. Equine Veterinary Journal 27(4): 281287.Google Scholar
10Stubbs, NC, Hodges, PW, Jeffcott, LB, Cowin, G, Hodgson, DR and McGowan, CM (2006). Functional anatomy of the caudal thoracolumbar and lumbosacral spine in the horse. Equine Veterinary Journal Supplement 36: 393399.Google Scholar