Evolution of equine locomotion research.

The abstract is an overview of a historical analysis on how the research into equine locomotion has evolved, beginning from the early observations of Aristotle to the development of biomechanics and kinematics as research tools. The researcher reviews methods used in the study of horse movement, from the use of bells on the horses’ hooves to more sophisticated devices.

Observations of Early Researchers

• Initial research into animal locomotion began with observation-based studies. Aristotle was one of the early researchers, making general observations on the limb movements of quadrupedal animals.
• In the 1600s, Borelli attempted to mechanize these observations by determining the center of gravity in animals and describing their movements via mechanical analysis.
• Before the development of cinematography, researchers had to rely on observation and audible cues, such as the sound of hooves touching the ground, to understand horse gait patterns. However, this method often resulted in errors as it did not account for when the hoof was lifted off the ground.

First Sound-Assisted Studies

• The first strides into more accurate evaluation began with attaching bells of different tones to each horse’s legs, allowing researchers to differentiate limb movement.
• Goiffon and Vincent were the first to notice the correlation between a horse’s speed and the type of gait it used. However, their understanding of horse gait was not yet fully accurate.
• Important findings from early research, however, include recognizing the cyclical nature of locomotion, the different phases (stance and swing) that each limb goes through, and the difference between symmetrical and asymmetrical gaits.

The Advent of Biomechanics

• This observation-based research laid the groundwork for the development of biomechanics in the study of equine locomotion.
• Two notable researchers in the field, E. Marey and Eadweard Muybridge, pioneered this new approach. While Marey mostly conducted research without the aid of photography, Muybridge is known as the pioneer of moving pictures in research.
• Marey’s research focused on clarifying the confusing nomenclature of horse gaits, often finding discrepancies between theoretical interpretations and his own findings. He also used innovative devices such as pneumatic automatic recorders and collapsible drums to mechanically record the movements of a horse in action.
• Despite his significant contributions, Marey’s results were often mixed in their accuracy, exemplifying the need for further innovation in equine locomotion study methods.