 The long-term goal of our research is to develop a horse-related injury prevention program. Our preliminary study indicated that lower levels of experience were strong indicators of greater risk. The period of greatest danger appears to be during the initial 100 hours of HRA, with the incidence of injury nearly 8 times greater among novices as compared to instructors or professionals. The extent to which HRI is preventable is currently not clear, but it may be substantial. 64 of injured, experienced riders believed their incident was preventable and 47 altered their riding habits as a result. 