What about Conformation?

The conformation of the horse should be considered when selecting a horse for a particular use. Horse breeds have been selectively modified to function best in a variety of performance types. Selection of breed or halter conformation is not a guarantee of successful athietic function. Study those horses that are winning consistently. What are their characteristics? Horses with long backs are more prone to muscle and ligament injuries, and straight shoulders predispose to front leg problems.