How does collection affect the horse's gaits in dressage?

As collection develops correctly, it transforms the horse's gaits in specific, identifiable ways that reflect the increased hindquarter engagement and improved balance that genuine collection produces. In the walk, correct collection produces a more active, covering four-beat walk with more pronounced overtrack — a collected walk that is shorter in stride but more active and expressive than a working walk that lacks engagement. In the trot, collection produces greater elevation and expression through increased joint flexion in the hind legs and more pronounced suspension — the collected trot has a shorter but higher stride than the working trot, with the hind legs carrying more weight and the forehand appearing lighter and more elevated. The passage is the most elevated expression of the collected trot, with maximum suspension and the characteristic slow, powerful elevation of each diagonal pair. In the canter, correct collection produces a more uphill, three-beat canter with a more pronounced jump and shorter, more active strides — the horse appears to bounce upward more than forward, reflecting the increased carrying engagement of the hindquarters. The pirouette is the most collected expression of the canter, in which the horse executes a 360-degree turn with the inside hind leg as the pivot point, requiring maximum collection and carrying power. Importantly, correct collection should always improve the basic qualities of the gaits rather than diminishing them: a horse whose gaits become less expressive, less elastic, or less rhythmic when asked for collection is not showing genuine collection but compression, and the training approach needs adjustment to develop the hindquarter engagement that genuine collection produces.