Journal Issue: JAAS Vol. 8 No. 3
2
Issued Date
2558
Resource Type
Language
tha
eng
eng
File Type
application/pdf
Access Rights
open access
Rights
ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
คณะสัตวแพทยศาสตร์ มหาวิทยาลัยมหิดล
Journal Volume
JAAS Volume 8
(2558)
Articles
A review on the functions of the horse back and longissimus dorsi muscle
(2015) Pattama Ritruechai; Mahidol University. Faculty of Veterinary Science. Department of Clinical Science and Public Health
The function of a muscle is to permit movement and maintain posture. Such a key role depends on the
interplay between its anatomical structure and the way is used during movement. From a mechanical sense, a
muscle changes its length to generate force. If it generates force while shortening (concentric), it will generate
mechanical power, and if it generates force whilst it is being stretched (eccentric), it will absorb mechanical
power. The longissimus dorsi, the largest muscle of the horse's back, is of considerable importance for its key
functions on the athletic ability and performance of the animal. In this review, I summarized the anatomy,
functions, biomechanics, and disorders of the horse back. The biomechanics of the horse's back depend on
the interaction between the spinal column and the spinal musculature. Especially, longissimus dorsi muscle
performs different functions both along its length and different regions across each segment. Several studies
have reported muscular disorders in the horse's back such as stiffness and limitation of motion range, as also by
electromyography records on the muscle activity (albeit at single recording sites during locomotion). These
reports are typically isolated observations and no study has yet integrated muscle activity patterns with the
cycles of flexion-extension in any detail, neither a study has linked these factors to the muscle fascicle strains
in the longissimus dorsi. Such studies will be fundamental to fully understand the mechanical role of the
longissimus dorsi, particularly during locomotion, and will develop new treatment techniques for horse
veterinarians. In addition, 3D anatomical measures of the structure in vivo integrated with measures of
function back motion and longissimus dorsi muscle activity would be ideal to understand in further detail
the function of the horse's back.
Title
JAAS Vol. 8 No. 3
Author's Affiliation
มหาวิทยาลัยมหิดล. คณะสัตวแพทยศาสตร์