Standardised terminology for the description and analysis of equine locomotion.

The study focuses on standardizing the terminology used to describe and analyze horse movement, breaking down each phase of the limb’s movement and defining terms to refer to each phase, thus facilitating better communication among researchers.

Understanding Equine Locomotion

• The research presents an in-depth exploration into the vocabulary used when discussing and analyzing horse locomotion.
• The authors break down each cycle of a horse’s limb movement into two main phases: Stance and Swing.
• The Stance phase, when the hoof is in contact with the ground, is further divided into an initial decelerative phase followed by a propulsive phase – the point at which the horse is pushing off the ground.
• The terminology “overlap” refers to when the stance phases of different limbs coincide, creating a point of simultaneous ground contact.
• Single support is the phase where one limb is solely responsible for supporting the horse’s weight during the stance phase.

The Stride and its Components

• A stride is a repetitive pattern of limb coordination in gait which includes stride length, stride duration and stride frequency.
• There are also asymmetric gaits like a gallop which consist of a stride stance phase (where one or more limbs are in contact with the ground) as well as a suspension phase (when all legs are off the ground).
• Conversely, symmetric gaits such as trotting and pacing have left and right stance phases with suspension phases.
• The authors also introduce two critical concepts: Advanced placement and advanced lift off. These indicate the time duration from when one foot is placed on the ground to when it is lifted off, provided in consecutive limbs.

Analyzing the Horse’s Movement

• Terminology also refers to the coordinated movement of the horse. For example, ‘Line of motion’ stands for the straight movement of the horse’s center of gravity in a certain direction.
• Measurements in specific planes, such as line gait and overcrossing, describe the placement of the horse’s hooves relative to the direction of movement.
• In addition, diagonal width refers to the distance between two legs on diagonal sides as they move in this plane.

Overall, this study is essential in establishing a common language for those studying equine locomotion, ensuring clearer communication and understanding between researchers worldwide.