Autor: |
Rebeka R. Zsoldos, Anna Voegele, Bjoern Krueger, Ulrike Schroeder, Andreas Weber, Theresia F. Licka |
Jazyk: |
angličtina |
Rok vydání: |
2018 |
Předmět: |
|
Zdroj: |
BMC Veterinary Research, Vol 14, Iss 1, Pp 1-10 (2018) |
Druh dokumentu: |
article |
ISSN: |
1746-6148 |
DOI: |
10.1186/s12917-018-1443-y |
Popis: |
Abstract Background The equine m. gluteus medius (GM) is the largest muscle of the horse, its main movement function is the extension of the hip joint. The objective of the present study was to measure equine GM activity in three adjacent locations on GM during walk and trot on a treadmill, in order to document potential differences. Fourteen Haflinger mares were measured using surface electromyography and kinematic markers to identify the motion cycles on three occasions over 16 weeks. The electrodes were placed on left and right gluteus medius muscle over the middle of its widest part and 5 cm lateral and medial of it. For data processing, electrical activity was normalised to its maximum value and timing was normalised to the motion cycle. A Gaussian distribution approach was used to determine up to 10 modes of focussed activity, and results were analysed separately for stance and swing phase of the ipsilateral hindlimb. Results Fair reliability was found for mean mode values (Cronbach’s alpha = 0.66) and good reliability was found for mean mode locations (Cronbach’s alpha = 0.71) over the three data collection days. The magnitude of muscle activity identified as mean mode value was much larger at trot than at walk, and mean mode value was significantly different between stance phases of walk and trot for all electrode positions (p |
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