The effect of rider weight and additional weight in Icelandic horses in tölt: part II. Stride parameters responses
| Autor: | Lars Roepstorff, Anna Jansson, V. Gunnarsson, G.J. Stefánsdóttir |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
040301 veterinary sciences biology.animal_breed Iceland STRIDE Breeding Icelandic horse SF1-1100 Incremental exercise 0403 veterinary science Weight-Bearing Animal science Forelimb Animals tölt Horses Gait stride parameters Mathematics biology gait quality Body Weight 0402 animal and dairy science Extremities 04 agricultural and veterinary sciences Stride length 040201 dairy & animal science rider weight language.human_language Animal culture Biomechanical Phenomena language Exercise Test Animal Science and Zoology Female Physiology and Functional Biology of Systems Icelandic Research Article |
| Zdroj: | Animal Animal, Vol 11, Iss 9, Pp 1567-1572 (2017) |
| ISSN: | 1751-732X 1751-7311 |
| Popis: | This study investigated the effects of rider weight in the BW ratio (BWR) range common for Icelandic horses (20% to 35%), on stride parameters in tölt in Icelandic horses. The kinematics of eight experienced Icelandic school horses were measured during an incremental exercise test using a high-speed camera (300 frames/s). Each horse performed five phases (642 m each) in tölt at a BWR between rider (including saddle) and horse starting at 20% (BWR20) and increasing to 25% (BWR25), 30% (BWR30), 35% (BWR35) and finally 20% (BWR20b) was repeated. One professional rider rode all horses and weight (lead) was added to saddle and rider as needed. For each phase, eight strides at speed of 5.5 m/s were analyzed for stride duration, stride frequency, stride length, duty factor (DF), lateral advanced placement, lateral advanced liftoff, unipedal support (UPS), bipedal support (BPS) and height of front leg action. Stride length became shorter (Y=2.73−0.004x; P0.05). In conclusion, increased BWR decreased stride length and increased DF proportionally to the same extent in all limbs, whereas BPS increased at the expense of decreased UPS. These changes can be expected to decrease tölt quality when subjectively evaluated according to the breeding goals for the Icelandic horse. However, beat, symmetry and height of front leg lifting were not affected by BWR. |
| Databáze: | OpenAIRE |
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