Activity of the equine rectus abdominis and oblique external abdominal muscles measured by surface EMG during walk and trot on the treadmill

Summary Reason for performing study: The rectus abdominis (RA) and oblique external abdominal (OEA) muscles are both part of the construction of the equine trunk and thought to be essential for the function of the spine during locomotion. Although RA activity at trot has previously been investigated...

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Bibliographic Details
Published in:Equine veterinary journal 2010-11, Vol.42 (s38), p.523-529
Main Authors: ZSOLDOS, R. R., KOTSCHWAR, A., KOTSCHWAR, A. B., RODRIGUEZ, C. P., PEHAM, C., LICKA, T.
Format: Article
Language:English
Subjects:
Abdomen
abdominal muscles
Construction
Electromyography
horse
Horses
Kolmogorov-Smirnov test
Locomotion
Muscles
Normal distribution
Rib
Sacrum
Statistical analysis
Sternum
surface electromyography
trot
walk
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Summary:Summary Reason for performing study: The rectus abdominis (RA) and oblique external abdominal (OEA) muscles are both part of the construction of the equine trunk and thought to be essential for the function of the spine during locomotion. Although RA activity at trot has previously been investigated, the relationship between OEA and RA at walk and trot has not yet been described. Objectives: To document abdominal muscle activities during walk and trot, and test the hypothesis that muscle activity at walk would be smaller than at trot. Materials and methods: Six horses (8–20 years old, 450–700 kg) were used for surface electromyography (EMG) measurements, with EMG electrodes placed caudal to the sternum (RA) and at the level of the 16th rib (OEA). On all hooves, the withers and the sacrum reflective markers were placed to determine motion cycles. Normal distribution of data was tested using a Kolmogorov‐Smirnov test and Student's t test was used to compare left‐right and walk‐trot differences (P
ISSN:0425-1644
2042-3306
DOI:10.1111/j.2042-3306.2010.00230.x