Shannon Wood, a graduate student in the mechanical engineering program at the University of Kentucky, has published a thesis entitled “Safety Concepts for Every Ride: A Statistical Ensemble Simulation to Mitigate Rotational Falls in Eventing Cross-Country.”
Wood was part of the team that worked with Dr. Suzanne Weaver Smith, University of Kentucky Professor of Mechanical Engineering, on the USEA Frangible Fence Study from 2016-2018. The study was funded by donations raised by the USEA Foundation and the initial findings were released in 2019. Information from this study is also included in Wood’s thesis.
Wood’s thesis abstract states, “Rotational falls are the leading cause of death and serious injury in the equestrian sport of eventing. Previous studies to develop safety devices used physical models representing one or at most several physical situations leading to different designs and no common understanding. In this thesis, a statistical ensemble model is developed and applied to generate and evaluate 10,000 different situations that might potentially lead to rotational falls. For accurate statistical representation of the horse and rider inertia distributions, measurements of over 400 training or competing horses and riders were recorded and incorporated. Video was recorded of 218 total competitors approaching 10 different jumps on cross-country courses in competitions ranging from Preliminary to CCI5*, yielding jump configuration angles for different fence types. Combining information for these, among 26 total variables, a statistical ensemble simulation using impulse momentum physics identifies conditions for rotation and defines design criteria for future general and situation-specific jumps and safety devices. A Jump Safety Quality Index is also devised to represent the benefit of an activating fence design for mitigating rotational falls versus the detriment and competition penalties of false activation.”
Wood also shared the following highlights:
“Results of this study include probability of rotation for a fixed fence scenario, the mitigative potential for preventing rotational falls, and contacts that cause a fence to activate but would not result in a rotational fall,” Wood said. “This information is incorporated into a Jump Safety Quality Index. It also includes force-time contact information for rotational and no-rotational fall contacts on the critical foreleg region. Illustrations of varieties of rotational falls are included—one-contact, two-contact (rotation on landing), and torsional falls and an additional contributor to rotation: hind feet pushing while in contact with the fence. Recommendations for impulse limit and contact angle are included to minimize unnecessary (false) activations.”
Wood’s thesis can be viewed in full here.
Read past updates on the USEA Frangible Fence Study:
One of my passions is continuing to be a good student, because I think no matter how old I get, there are multiple reasons learning new things inspires me. First and foremost, it helps me be a better rider and trainer, so my horses benefit. Second, it helps me be a better teacher by exposing me to different ways to have a relationship with a horse or a student.
This month we’re going to begin a three-part series on how to create positive riding experiences by making sure the words you say to yourself and the thoughts you think to yourself are positive. Referred to as self-talk, internal dialogue, or brain babble; the words you say to yourself can have a huge impact on your performance. In fact, your thoughts and voice are actually considered behaviors, and just like how positive physical behaviors (i.e. a balanced transition) can create success, your verbal behaviors can also accomplish the very same thing. So let's spend the next few months talking about how to talk to yourself!
Being spontaneous has paid off for Kevin Keane and Sportsfield Candy. “I bought him on a Wednesday and showed him on a Thursday,” Keane recalls about his first event with his Irish Sport Horse gelding, then 9 years old, at Plantation Field Horse Trials (Unionville, Pennsylvania) in September 2016. “I owned him for part of a day, and the next morning I showed up at a CCI and jogged him up for a two-star, and we went clean and clean and clean.”
THANK YOU to everyone who has already entered the USEF/USEA Recognized CDCTA Spring Horse Trials scheduled for Sunday, April 9 in Berryville, VA. We will continue to take late entries through Friday, March 24 using USEA’s Xentry system. If you still want to come compete, please enter! The late fee has been waived through Friday, March 24.