Several studies have shown that there is a high prevalence of ill-fitting saddles. Many riders do not have saddle fit professionally assessed on at least an annual basis. Back dimensions can change considerably over the period of a year and therefore saddle fit should be assessed several times yearly, especially if work intensity has been altered. Saddle fit should be evaluated before and after exercise because back dimensions can change during work. Ideally, horses should be ridden in individual purpose-fitted saddles, rather than the same saddle being used on several horses. There remains little scientific rationale for the use of pads and numnahs under a saddle, except to temporarily improve saddle fit, and the use of numnahs that exert pressure on the spinous processes can be detrimental to performance. Although saddle slip consistently to one side can be associated with poor saddle fit or asymmetry of the horse's back, the most common cause is hindlimb lameness.
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http://dx.doi.org/10.1016/j.tvjl.2015.06.012 | DOI Listing |
Chaos
December 2024
Faculty of Engineering and Natural Sciences, Kadir Has University, 34083 Istanbul, Turkey.
Regime switching, the process where complex systems undergo transitions between qualitatively different dynamical states due to changes in their conditions, is a widespread phenomenon, from climate and ocean circulation, to ecosystems, power grids, and the brain. Capturing the mechanisms that give rise to isolated or sequential switching dynamics, as well as developing generic and robust methods for forecasting, detecting, and controlling them is essential for maintaining optimal performance and preventing dysfunctions or even collapses in complex systems. This Focus Issue provides new insights into regime switching, covering the recent advances in theoretical analysis harnessing the reduction approaches, as well as data-driven detection methods and non-feedback control strategies.
View Article and Find Full Text PDFAnim Welf
October 2024
Equine Centre, Melbourne Veterinary School, University of Melbourne, 250 Princes Hwy, Werribee, VIC 3030, Australia.
Working equids support the livelihoods of millions of low-income households worldwide and face several welfare challenges. Although equipment-related wounds are common, little is known about specific risk factors. This cross-sectional study surveyed equids used for cart-work in three Ethiopian towns.
View Article and Find Full Text PDFAnimals (Basel)
November 2024
Equine Department, Hartpury University, Gloucester GL19 3BE, UK.
To ensure the comfort of ridden horses, equipment including bridles and bits should be suitable and fit correctly. Horse owners employ a variety of equestrian professionals with varying degrees of responsibility regarding bridle and bit fit. This study aimed to compare the frequency and manner in which equestrian professionals within a multidisciplinary team (MDT) engage with clients on matters of bridle and bit fit, and to capture their perceptions of the key issues in bridle and bit fit.
View Article and Find Full Text PDFeNeuro
October 2024
School of Systems Science, Beijing Normal University, Beijing 100875, China
Experimental evidence showed that an increase in intracellular chloride concentration [Formula: see text] caused by gamma-aminobutyric acid (GABA) input can promote epileptic firing activity, but the actual mechanisms remain elusive. Here in this theoretical work, we show that influx of chloride and concomitant bicarbonate ion [Formula: see text] efflux upon GABA receptor activation can induce epileptic firing activity by transition of GABA from inhibition to excitation. We analyzed the intrinsic property of neuron firing states as a function of [Formula: see text] We found that as [Formula: see text] increases, the system exhibits a saddle-node bifurcation, above which the neuron exhibits a spectrum of intensive firing, periodic bursting interrupted by depolarization block (DB) state, and eventually a stable DB through a Hopf bifurcation.
View Article and Find Full Text PDFBMC Oral Health
October 2024
Professor of Prosthodontics and Member of Evidence Based Dentistry Centre, Faculty of Dentistry, Cairo University, Vice Dean of School of Dentistry, Badya University, 11 Al Saraya, Al Manial, Giza Governorate, Cairo, Egypt.
Background: The passive fit of 3-unit implant supported prefabricated metal screw-retained prosthesis before implant placement might be difficult. Hence, we aim to evaluate the passive fit and time efficiency of CAD/CAM 3-unit implant supported fixed prostheses that were constructed based on virtual versus those based on actual implant positions in Kennedy Class I models.
Methods: A sample of 5 Kennedy class I models with thin wiry ridges were restored by 20 frameworks bilaterally, 10 based on actual (group A) and 10 based on virtual (group V) implant positions.
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