Causes of athletic injury are numerous. Despite the interplay of risk factors or inciting biomechanical event, each athletic injury is sustained while athletes are exposed to training and competition workloads. Whilst sufficient workloads are necessary for positive adaptations and improved performance, a level beyond the individual’s tolerance significantly increases the vulnerability to injury. However, few studies have actually explained the underlying mechanism behind this association between workload and injury. The following paper proposes an updated etiology model that accounts for the effects of workloads on athletic injuries.